九州大学-研究者情報 [光原昌寿 (准教授) 総合理工学研究院物質科学部門]

1.	光原昌寿, 表面分析ハンドブック　3.4 後方散乱電子回折法, 朝倉書店, 2021.04.
2.	光原昌寿, 中島英治, 新版鉄鋼材料と合金元素, 応用編33章, 日本鉄鋼協会, 2015.11.
3.	光原昌寿, 第5版鉄鋼便覧第3巻 35章 5節, 日本鉄鋼協会, 2014.08.
4.	光原昌寿, 中島英治, 第5版鉄鋼便覧第3巻 21章 1-2節, 日本鉄鋼協会, 2014.08.

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1.	Tsubasa Tokuzumi, Masatoshi Mitsuhara, Shigeto Yamasaki, Tomonari Inamura, Toshiyuki Fujii, Hideharu Nakashima, Role of disclinations around kink bands on deformation behavior in Mg–Zn–Y alloys with a long-period stacking ordered phase, Acta Materialia, 10.1016/j.actamat.2023.118785, 248, 2023.04, Mg–Zn–Y alloys that contain an Mg-based long-period stacking ordered (LPSO) phase exhibit excellent mechanical properties because of the kink bands formed by plastic deformation. Such “kink-band strengthening” has attracted significant attention. Herein, we conducted deformation tests on directionally solidified single-phase LPSO Mg85Zn6Y9 alloys to investigate the kink-band strengthening mechanism. High-angular resolution electron backscatter diffraction was performed to detect misorientation between the matrices on either side of the kink bands. The misorientations corresponded to the magnitudes of the Frank vectors of the disclinations around the kink, and closely matched the estimations from geometric analysis, which supported the existence of disclinations. Moreover, the Frank vector of the kink bands increased after shear deformation, which indicates that shear deformation introduced new disclinations around the kinks. Scanning electron microscopy demonstrated that the kinks clearly obstructed basal ⟨a⟩ slip. Furthermore, scanning transmission electron microscopy of a sheared kink band revealed dislocation pile-ups on both sides of the kink/matrix interface, as well as the formation of secondary kinks that stabilized the structure against shear deformation (i.e., self-accommodation) and bend contours caused by elastic stress fields. The results suggest that disclinations behave as long-range obstacles to dislocation motion (e.g., by reducing the increase in kink-band self-energy or by the elastic stress field of disclinations). We believe that this study will play a key role in identifying the factors responsible for kink-band strengthening in LPSO-phase Mg alloys and in understanding the phenomena underlying the strengthening mechanism..
2.	Yoshiki Kawano, Masatoshi Mitsuhara, Tsuyoshi Mayama, Misaki Deguchi, Formation mechanism of high-strain bands in commercially pure titanium, Materials Science and Engineering: A, 10.1016/j.msea.2023.144670, 867, 2023.03, In textured α-Ti, band-like high-strain regions at approximately 45° to the loading direction are commonly observed under tensile deformation. Herein, such high-strain regions were called high-strain bands (HSB), and the reasons for the formation mechanism of HSBs were investigated by a uniaxial tensile test and crystal plasticity finite element (CPFE) analyses. First, we conducted a uniaxial tensile test of commercially pure titanium (CP–Ti) with a TD-split texture, where aggregates of (0001) split and incline in the transverse direction, and changes in strain distributions with deformation were observed by digital image correlation. The strain distributions showed that HSBs of approximately 45° to the loading direction were formed from the initial stage of deformation. Second, a geometric model including crystal orientation information was constructed from the crystal orientation map of the CP-Ti specimen obtained by electron back-scattered diffraction, and the cause of the formation of HSBs was investigated by CPFE analysis. The stress–strain relationship and strain distributions obtained by CPFE analysis correlated well with those obtained experimentally, and the HSBs were successfully reproduced. Finally, CPFE analyses were conducted when the loading conditions, critical resolved shear stress (CRSS), or elastic constants were changed. These results show that the HSBs formed from the initial stage of deformation and the distributions formed by elastic deformation changed depending on the elastic anisotropy. However, the distribution of HSBs after plastic deformation was unchanged by elastic anisotropy. This may be because the directions of easy deformation by elastic and plastic deformation coincided. Elastic anisotropy did not affect the distributions of HSBs formed by plastic deformation, and elastic and plastic deformations were predominantly determined by elastic constants and CRSS, respectively. Curved HSBs were also observed when plastic deformation-resistant regions occupied a large area in the specimen. In this case, the distributions of HSBs, caused by elastic deformation did not coincide with those of the plastic deformation..
3.	Yan Chong, Reza Gholizadeh, Tomohito Tsuru, Ruopeng Zhang, Koji Inoue, Wenqiang Gao, Andy Godfrey, Masatoshi Mitsuhara, J. W. Morris, Andrew M. Minor, Nobuhiro Tsuji, Grain refinement in titanium prevents low temperature oxygen embrittlement, Nature Communications, 10.1038/s41467-023-36030-0, 14, 1, 2023.02, Abstract Interstitial oxygen embrittles titanium, particularly at cryogenic temperatures, which necessitates a stringent control of oxygen content in fabricating titanium and its alloys. Here, we propose a structural strategy, via grain refinement, to alleviate this problem. Compared to a coarse-grained counterpart that is extremely brittle at 77 K, the uniform elongation of an ultrafine-grained (UFG) microstructure (grain size ~ 2.0 µm) in Ti-0.3wt.%O is successfully increased by an order of magnitude, maintaining an ultrahigh yield strength inherent to the UFG microstructure. This unique strength-ductility synergy in UFG Ti-0.3wt.%O is achieved via the combined effects of diluted grain boundary segregation of oxygen that helps to improve the grain boundary cohesive energy and enhanced dislocation activities that contribute to the excellent strain hardening ability. The present strategy will not only boost the potential applications of high strength Ti-O alloys at low temperatures, but can also be applied to other alloy systems, where interstitial solution hardening results into an undesirable loss of ductility..
4.	Misaki Deguchi, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Genki Tsukamoto, Tomonori Kunieda, Tensile Deformation Behaviors of Pure Ti with Different Grain Sizes under Wide-Range of Strain Rate, Materials, 10.3390/ma16020529, 16, 2, 2023.01, In this study, pure titanium equivalent to Grade 1 was subjected to tensile tests at strain rates ranging from 10−6 to 100 s−1 to investigate the relationship between its mechanical properties and its twinning and slip. Deformation properties and microstructures of samples having average grain sizes of 210 μm (Ti-210), 30 μm (Ti-30), and 5 μm (Ti-5) were evaluated. With increasing strain rates, the 0.2% proof stress and ultimate tensile strength increased for all samples; the fracture strain increased for Ti-210, decreased for Ti-5, and changed negligibly for Ti-30. Comparing high (100 s−1) and low (10−6 s−1) strain rates, twinning occurred more frequently in Ti-30 and Ti-210 at high strain rates, but the frequency did not change in Ti-5. The frequency of 1st order pyramidal slip tended to be higher in Ti-30 and Ti-5 at low strain rates. The higher ductility exhibited by Ti-210 at high strain rates was attributed to the high frequency of twinning. In contrast, the higher ductility of Ti-5 at low strain rates was attributed to the activity of the 1st order pyramidal slip..
5.	H. Akamine, A. Heima, Y. Soejima, M. Mitsuhara, T. Inamura, M. Nishida, Where and when are dislocations induced by thermal cycling in Ti–Ni shape memory alloys?, Acta Materialia, 10.1016/j.actamat.2022.118588, 244, 118588-118588, 2023.01.
6.	Yoshiki Kawano, Masatoshi Mitsuhara, Tsuyoshi Mayama, Misaki Deguchi, Zishuo Song, Numerical prediction of {112‾2}⟨112‾3‾⟩ compression twin activation in commercially pure titanium under uniaxial tension, Materials Science and Engineering A, 10.1016/j.msea.2022.143302, 847, 2022.07, In this study, the criteria for {112‾2} compression twinning in commercially pure titanium (CP–Ti) were investigated by uniaxial tensile tests, crystal plasticity finite element (CPFE) analyses, and slip operation factor (SOF) calculations. First, the aggregates of the [0001] axes of CP-Ti were inclined in the rolling direction (RD), implying its RD-split texture. The development of the crystal orientation distribution with deformation was observed by electron back-scattered diffraction (EBSD). Active slip systems were identified by kernel average misorientation (KAM) and intergranular misorientation axis (IGMA) analyses. The dominant slip system was prismatic , whereas the non-prismatic slip systems were activated near the grain boundary. Active twin systems were also identified by the rotation angles of the [0001] axes between the twin and matrix. The dominant active twin system was the {112‾2} compression twin, although a uniaxial tensile load was applied. Second, the positions of {112‾2} twinning were predicted by CPFE analysis using the resolved shear stress (RSS) criterion while considering plastic deformation. SOF analysis was also employed for the prediction. The CPFE and SOF analyses yielded almost the same level of prediction accuracy. However, these calculations do not completely predict the twinning positions. Finally, the criteria for {112‾2} twinning were discussed, and it was revealed that hydrostatic pressure and RSS are possible criteria for {112‾2} twinning in the continuum model..
7.	Tomoaki Hamaguchi, Masatoshi Mitsuhara, Hideto Kusuhara, Effect of Neodymium Content on Creep Properties of 9Cr-3Co-3W-Nd-B Steel, ISIJ International, 10.2355/isijinternational.isijint-2022-057, 62, 7, 1548-1555, 2022.07.
8.	Yoshiki Kawano, Tsuyoshi Mayama, Taiki Okamoto, Masatoshi Mitsuhara, Local slip activities in polycrystalline α-Ti depending on textures and strain rates, Materials Science and Engineering A, 10.1016/j.msea.2022.143133, 843, 2022.05, It is possible that strain localization in polycrystalline α-Ti leads to the fracture, and it is crucial to evaluate the local slip activities for individual slip systems depending on their textures and loading conditions. In this study, the effects of textures and strain rates on local slip activities were investigated using the crystal plasticity finite element method. For the analysis, microstructural models of α-Ti with the following three textures were employed: aggregates of (0001) axes are (i) splitting in rolling direction (RD-split texture), (ii) splitting in transverse direction (TD-split texture), and (iii) aligned in normal direction (basal texture). For each texture model, two variations in the crystal orientation distributions were considered, namely, small and large scatterings of crystal orientations in the (0001) axes by normal random numbers. The differences in the strain rate sensitivities of the critical resolved shear stresses (CRSSs) among slip systems were also considered. Tensile loading was applied by a forced displacement in the RD with two strain rate conditions of 1.0 × 10−4 s−1 and 1.0 × 10−1 s−1. Local non-prismatic slips were easier to operate in the models with basal and RD-split textures than with the TD-split texture. The slip strains for non-prismatic slip systems were higher at higher strain rates, while activities in the prismatic slips decreased with an increase in strain rates. The mechanism of the exchange of slip system activities can be explained by strain redistribution between hard and soft regions and changes in CRSS as a function of strain rates..
9.	安達充, 奥平有, 山﨑重人, 光原昌寿, 中島英治, 小岩井修二, 橋詰良樹, 村上勇夫, 寺田大将, レーザ積層造形法と電子ビーム積層造形法で作製したAC8Aアルミニウム合金のミクロ組織と引張特性—Microstructure and tensile strength of AC8A aluminum alloy fabricated by laser-based powder bed fusion and electron-based powder bed fusion—特集軽金属材料の三次元造形技術, 軽金属, 72, 5, 206-213, 2022.05.
10.	Genki Tsukamoto, Tomonori Kunieda, Masatoshi Mitsuhara, Hideharu Nakashima, Effect of twinning deformation on work hardening in commercially pure titanium, Materials Science and Engineering A, 10.1016/j.msea.2022.142907, 840, 2022.04, To clarify the effect of twinning deformation on the work-hardening behavior of commercially pure titanium, the changes in the grain size and texture due to twinning deformation were investigated, along with the grain-size dependence of the work-hardening behavior. In specimens with an average grain size of 10 μm or less, twinning deformation was inactive, and the instantaneous work-hardening exponent (n = d(lnσ)/d (lnε)) was constant at approximately 0.2. For specimens in which twinning deformation occurred, the average grain size decreased and the texture changed with increasing strain due to twinning deformation, which resulted in an increase in the instantaneous n value. In the grain-size range at which twinning deformation did not occur, the smaller the grain size, the higher the rate of increase in the dislocation density and the greater the activity of ⟨c + a⟩-type dislocations, resulting in an increased strain hardening rate. Furthermore, the flow stress could be approximated using only the Bailey–Hirsh equation. The promotion of work hardening by twinning deformation can be mostly explained by the increase in the dislocation density increment rate, increase in the fraction of ⟨c + a⟩ dislocation due to grain refinement, and change in the Taylor factor due to the change in the texture..
11.	波多聰, 趙一方, 井原史朗, 斉藤光, 光原昌寿, 村山光宏, TEM/STEMトモグラフィーによる最近の研究, まてりあ, 10.2320/materia.61.84, 61, 2, 84-88, 2022.02.
12.	塚本元気, 國枝知徳, 光原昌寿, 中島英治, チタンの双晶変形に及ぼすOおよびAl添加の影響, 九州大学大学院総合理工学報告, 10.15017/4763153, 43, 2, 29-36, 2022.02, Active twinning systems during compression deformation at temperatures from 25°C to 700°C were investigated using SEM/EBSD techniques in order to clarify the effects of oxygen and aluminum addition on twinning deformation in titanium. Four twinning systems have been confirmed in commercially pure titanium, Ti-0.2mass%O and Ti-2mass%Al under compression at 10% strain. The addition of oxygen suppresses the activity of all the twin systems at 25°C, but only slightly above 200°C. On the other hand, the addition of aluminum suppressed the activity of only the {112̅2} twin. It is supposed that the suppressive effect of the oxygen addition is mediated by thermal activation processes such as diffusion and lattice vibration, while that of the aluminum addition is brought about by the suppression of slip..
13.	Genki Tsukamoto, Tomonori Kunieda, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Effects of temperature and grain size on active twinning systems in commercially pure titanium, Journal of Alloys and Compounds, 10.1016/j.jallcom.2021.161154, 884, 2021.12, In order to clarify the effects of grain boundary, grain size and deformation temperature on twinning deformation in polycrystalline commercially pure titanium, active twinning systems during compression deformation at temperatures from 25 °C to 800 °C investigated using SEM/EBSD techniques. Four twinning systems were confirmed to operate under compression at 10% strain in a deformation temperature dependent manner: {112̅1} and {112̅2} twins were observed only at relatively low temperatures (e.g. ≦ 400 °C), while, {101̅1} twins were observed at relatively high temperatures (e.g. ≧ 400 °C), and {101̅2} twins formed at every tested temperature (25 °C–800 °C). Our results suggested that the effects of strain concentration at grain boundaries on twinning differ based on the active twinning systems, which are affected by: 1) the difference in the formation temperature ranges between single-crystal and polycrystalline specimens, 2) the ratio of the number of deformation twins touching grain boundaries to the total number of deformation twins, and 3) grain size dependence..
14.	Yifang Zhao, Suguru Koike, Rikuto Nakama, Shiro Ihara, Masatoshi Mitsuhara, Mitsuhiro Murayama, Satoshi Hata, Hikaru Saito, Five-second STEM dislocation tomography for 300 nm thick specimen assisted by deep-learning-based noise filtering, Scientific Reports, 10.1038/s41598-021-99914-5, 11, 1, 2021.12, Scanning transmission electron microscopy (STEM) is suitable for visualizing the inside of a relatively thick specimen than the conventional transmission electron microscopy, whose resolution is limited by the chromatic aberration of image forming lenses, and thus, the STEM mode has been employed frequently for computed electron tomography based three-dimensional (3D) structural characterization and combined with analytical methods such as annular dark field imaging or spectroscopies. However, the image quality of STEM is severely suffered by noise or artifacts especially when rapid imaging, in the order of millisecond per frame or faster, is pursued. Here we demonstrate a deep-learning-assisted rapid STEM tomography, which visualizes 3D dislocation arrangement only within five-second acquisition of all the tilt-series images even in a 300 nm thick steel specimen. The developed method offers a new platform for various in situ or operando 3D microanalyses in which dealing with relatively thick specimens or covering media like liquid cells are required..
15.	出口岬, 山﨑重人, 光原昌寿, 中島英治, 大田祐太朗, Ti-6Al-4V合金における室温クリープ中の転位の運動様式と変形組織の発達過程, チタン = Titanium Japan, 69, 4, 333-341, 2021.10.
16.	Hiroshi Akamine, Masatoshi Mitsuhara, Minoru Nishida, Vahid Samaee, Dominique Schryvers, Genki Tsukamoto, Tomonori Kunieda, Hideki Fujii, Precipitation Behaviors in Ti–2.3 Wt Pct Cu Alloy During Isothermal and Two-Step Aging, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 10.1007/s11661-021-06265-x, 52, 7, 2760-2772, 2021.07, Time evolution of precipitates related to age-hardening in Ti–2.3 wt pct Cu alloys was investigated by electron microscopy. In isothermal aging at 723 K, the hardness increases continuously owing to precipitation strengthening, whereas in two-step aging where the aging temperature is switched from 673 K to 873 K after 100 hours, the hardness is found to drastically drop after the aging temperature switches. In isothermal aging, metastable and stable precipitates are independently nucleated, whereas characteristic V-shaped clusters of precipitates are observed during the two-step aging. It is revealed by atomic-scale observations that the V-shaped clusters are composed of metastable and stable precipitates and each type of precipitate has a different orientation relationship with the α phase: (10 3 ¯) //(0001) and [0 1 ¯ 0] //[11 2 ¯ 0] for the metastable, and (201)//(1 1 ¯ 03) and [0 1 ¯ 0] //[11 2 ¯ 0] for the stable precipitates, respectively. The drop in hardness during two-step aging can be explained by a synergistic effect of decreased precipitation strengthening and solid solution strengthening. α α α α.
17.	Mitsuhiro Matsuda, Yuta Yamada, Yuta Himeno, Kenji Shida, Masatoshi Mitsuhara, Motohide Matsuda, Magnéli Ti4O7 thin film produced by stepwise oxidation of titanium metal foil, Scripta Materialia, 10.1016/j.scriptamat.2021.113829, 198, 2021.06, A 3-μm-thick film of Magnéli Ti O was successfully fabricated on the surface of Ti metal foil by a stepwise oxidation process involving annealing at 973 K in air followed by heating to 1173 K under a low oxygen partial pressure. Transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy showed that the Magnéli Ti O phase consisted of a period of four layers of equiaxial grains several hundreds of nanometers in size. The black Magnéli Ti O thin film formed by our process absorbed light in the visible and near-infrared regions. 4 7 4 7 4 7.
18.	Shigeto Yamasaki, Misaki Deguchi, Masatoshi Mitsuhara, Hideharu Nakashima, Yutaro Ota, Keiji Kubushiro, Evaluation of depth of dislocation visibility in SEM electron channeling contrast imaging in Ti-6Al-4V alloy using serial sectioning method, Microscopy, 10.1093/jmicro/dfaa060, 70, 3, 265-277, 2021.06, In this study, we conducted a quantitative evaluation of dislocation density by scanning electron microscopy electron channeling contrast imaging for α grains of a Ti-6Al-4V alloy deformed at room temperature. The depth of visibility of dislocations is experimentally measured as 140 to 160 nm by a serial sectioning observation. This result is compared with the theoretical value and applied to evaluate dislocation density. These factors confirm that the theoretically calculated value of the depth of visibility, at 5 to 6 times the extinction distance, is valid for the hexagonal close-packed Ti alloy..
19.	Shigeto Yamasaki, Tomoki Miike, Masatoshi Mitsuhara, Hideharu Nakashima, Ryutaro Akiyoshi, Takahiko Nakamura, Shimpei Kimura, Quantitative analysis of the Portevin–Le Chatelier effect by combining digital image correlation and dead-weight-type tensile test, Materials Science and Engineering A, 10.1016/j.msea.2021.141277, 816, 2021.06, A quantitative evaluation method of a serration deformation behavior by a dead-weight tensile test combined with a strain measurement by a DIC method is proposed. This method applies to binary solid solution aluminum alloys and a ternary cluster strengthened aluminum alloy. In the dead-weight tensile test, the serrated flow was measured as a stress-strain curve with a stepped-shape divided into two stages of a stress rising phase and a strain burst phase. By adopting this tensile test, the serration deformation behavior can be measured with an extremely reproducibility. It was confirmed that an elastic deformation occurs predominantly in the stress rising phase, and this deformation behavior is discussed in relation to the concentration of solid solution elements. Propagation of PLC bands has occurred in the strain burst phase. An activation volume obtained from the strain rate in the PLC bands was in good agreement with a calculated value based on a distribution interval assuming a regular square distribution of solute elements. For the ternary alloy strengthened by clusters, it is also shown that this method can be applied to the qualitative estimation of the change in the residual amount of the solid solution element in the matrix during natural aging..
20.	Nozomu Adachi, Yasutaka Matsuo, Yoshikazu Todaka, Mikiya Fujimoto, Masahiro Hino, Masatoshi Mitsuhara, Yojiro Oba, Yoshinori Shiihara, Yoshitaka Umeno, Minoru Nishida, Effect of grain boundary on the friction coefficient of pure Fe under the oil lubrication, Tribology International, 10.1016/j.triboint.2020.106781, 155, 2021.03, In this study, the effect of grain boundary on the frictional behavior under the oil-lubricated condition was investigated by varying the grain size (crystallite size) of the pure Fe samples prepared via physical vapor deposition. A high fraction of grain boundary in the sample yielded a low friction coefficient μ in the case of a lubrication oil that formed a chemisorbed film on the surface of the material. Thick absorbed layer formed on the surface was observed only in the sample with high fraction of grain boundary. These results indicate that a disordered structure in the vicinity of grain boundary preferentially forms chemisorbed films and reduces μ by protecting the surface of the material..
21.	Yoshiki Kawano, Tsuyoshi Mayama, Masatoshi Mitsuhara, Shigeto Yamasaki, Michihiro Sato, Generalized Slip Operation Factor Considering Contribution of Secondary Slip Systems, Materials Today Communications, 10.1016/j.mtcomm.2021.102041, 26, 2021.03, Slip operation factor (SOF), which considers the effect of mechanical interactions between plastically “soft” and “hard” regions, is a function of the Schmid factor (SF) and critical resolved shear stress (CRSS). It is used as an indicator to efficiently predict the ease of slip operation of metal materials at the grain level. While SOF could predict strain distributions, it was not compliant to the prediction of those for individual slip systems. Additionally, the contribution of secondary slip systems was disregarded in the SOF. In this study, the SOF was first extended to adapt to individual slip systems. This extended and generalized form of the SOF was called SOFS. Next, the contribution of secondary slip systems was considered in SOF, where the modified version of the SOF was called MSOF. Polycrystalline α-Ti models were built from crystal orientation maps obtained by electron back-scattered diffraction (EBSD), and the strain distributions under uniaxial tensile loading were predicted using the SOF, SOFS, and MSOF. The results obtained were compared with those obtained via crystal plasticity finite element (CPFE) analysis. The distributions obtained by the SOFS were similar to slip strain distributions for individual slip systems when single slips were dominant and the deformation was slight. The MSOF also successfully predicted the strain distributions with higher accuracy than that offered by the SOF..
22.	M. Matsuda, K. Arai, M. Mitsuhara, Y. Yamabe-Mitarai, M. Nishida, Self-accommodation and morphological characteristics of the B33 martensite in Zr–Co–Pd alloys, Journal of Materials Science, 10.1007/s10853-020-05599-y, 56, 9, 5899-5909, 2021.03, Thermoelastic martensitic transformation (MT) plays a vital role in shape memory effects and superelasticity of various alloys. To understand the self-accommodation mechanism of the MT of Zr–Co–Pd alloys, which demonstrate typical MT from B2 to B33 structure, the configuration of the alloy’s martensite variants and their crystallographic relationship were investigated by electron backscatter diffraction, transmission electron microscopy, and high-angle annular dark-field scanning transmission electron microscopy. Results suggest that two habit plane variants (HPVs) bounded by {021} compound twinning are formed around each axes of the B2 parent phase. It is determined that the minimum self-accommodation unit, to relax the strain energy accompanying MT, is a pair of trapezoid- or triangle-shaped HPVs. No lattice invariant shear exists in the martensite variants with a trapezoid- or triangle-shape. In the latter stage of MT, each HPV pair may contact and impinge on {110} plane of B2 parent phase, which is shear and shuffling plane on MT. The combination of the four variants forms the roof-type morphology. B33 B2 B2.
23.	Ryoma Fukuoka, Kazushige Tokuno, Masatoshi Mitsuhara, Kohei Yamakoshi, Shinnosuke Tsuchida, Junji Miyamoto, Masahiro Hagino, Dislocation structures formed inside dislocation channels of rapid-cooled and tensile-deformed aluminum single crystals, Materials Transactions, 10.2320/matertrans.MT-M2020255, 62, 2, 221-228, 2021.02, Dislocation structures inside the cleared dislocation channels in rapid-cooled and tensile-deformed aluminum single crystals were investigated by using transmission electron microscope (TEM). The present study especially focused on the dislocation structures at their early formation stage. In their very beginning stage, arrays of prismatic dislocation loops of the primary slip system were essentially formed elongating along [1- 2 1] direction and each prismatic loop stacked to [1- 0 1]. With the progress of plastic deformation, the number of the prismatic loops composing the array increased and produced tangled structures with dislocations of the primary coplanar slip system. The tangled structures may act as strong obstacles against the following primary dislocations and become a triggering factor for the creation of the cell structure..
24.	Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Relationship between creep strength and magnetic properties of cobalt-bearing high chromium ferritic steel, ISIJ International, 10.2355/isijinternational.ISIJINT-2020-315, 61, 1, 408-416, 2021.01, In this study, the relationship between changes in the magnetic properties and creep strength with the addition of 3 or 6 mass% Co was investigated for ferritic steel containing 15 mass% Cr. Co addition up to 6 mass% hardly contributed to solid solution strengthening or precipitation strengthening at room temperature. However, in the range of 650 to 750°C, the steel with the larger amount of Co exhibited higher creep strength, which is explained by a reduction in the diffusion rate associated with a change in magnetic properties by Co addition. An increase of the volume magnetization of the steel with increasing Co content in the range from room temperature to about 800°C was confirmed. Comparing the difference in volume magnetization and the ratio of the creep strain rate for steels with different amounts of Co, a clear correlation was found. That is, at the temperature at which the difference in volume magnetization reached a maximum, the peak of the creep strain rate ratio was also observed. This result is explained as follows. In a low temperature region where the magnetization is large or in a high temperature region above the Curie point of both steels, the steels exhibit no significant difference in the creep strength. However, at a temperature where one steel loses its ferromagnetism but the other steel retains it, a significant difference in the creep strength is observed..
25.	Misaki Deguchi, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Yutaro Ota, Dislocation motion and microstructure evolution deformed during creep at room temperature in Ti-6Al-4V alloy, Keikinzoku/Journal of Japan Institute of Light Metals, 10.2464/JILM.70.405, 70, 8, 405-414, 2020.10, The deformation behavior and microstructure evolution of Ti-6Al-4V alloy under room temperature creep was investigated using mechanical test and scanning electron microscope observation with electron back-scatter diffraction method. The alloys were creep deformed and ruptured under initial stresses of 874 MPa, 889 MPa and 904 MPa at room temperature. The rapid stress change test revealed that creep deformation was controlled by the viscous slip motion of dislocations. The stress exponent was estimated as 59. The strain rate of acceleration creep region calculated by the Norton's law with the high stress exponent was inconsistent with that measured by the experimental creep test. Using the slip trace analysis, it was found that single dislocation slip in basal and prism were mainly activated in the early stage of creep, and multiple slips were often observed as the deformation progresses. Especially, the multiple slip including 1st pyramidal slip believed to be effective for suppressing strain rate acceleration in creep. In addition, the work hardening behavior during creep showed a strain rate dependence, indicating that the lower the strain rate is, the more work hardening occurs..
26.	S. Hata, T. Honda, H. Saito, M. Mitsuhara, T. C. Petersen, M. Murayama, Electron tomography: An imaging method for materials deformation dynamics, Current Opinion in Solid State and Materials Science, 10.1016/j.cossms.2020.100850, 24, 4, 2020.08, The combination of in-situ and three-dimensional (3D) in transmission electron microscopy (TEM) is one of the emerging topics of recent advanced electron microscopy research. However, to date, there have been only handful examples of in-situ 3D TEM for material deformation dynamics. In this article, firstly, the authors briefly review technical developments in fast tilt-series dataset acquisition, which is a crucial technique for in-situ electron tomography (ET). Secondly, the authors showcase a recent successful example of in-situ specimen-straining and ET system development and its applications to the deformation dynamics of crystalline materials. The system is designed and developed to explore, in real-time and at sub-microscopic levels, the internal behavior of polycrystalline materials subjected to external stresses, and not specifically targeted for atomic resolution (although it may be possible). Technical challenges toward the in-situ ET observation of 3D dislocation dynamics are discussed for commercial structural crystalline materials, including some of the early studies on in-situ ET imaging and 3D modeling of dislocation dynamics. A short summary of standing technical issues and a proposed guideline for further development in the 3D imaging method for dislocation dynamics are then discussed..
27.	Shigeto Yamasaki, Tsubasa Tokuzumi, Wansong Li, Masatoshi Mitsuhara, Koji Hagihara, Toshiyuki Fujii, Hideharu Nakashima, Kink Formation Process in Long-Period Stacking Ordered Mg-Zn-Y Alloy, Acta Materialia, 10.1016/j.actamat.2020.04.051, 195, 25-34, 2020.08, The formation process of the kink bands in a directionally solidified, polycrystalline, long-period stacking ordered (LPSO) Mg Zn Y phase during compression deformation was investigated. In-situ compression observations by scanning electron microscopy and electron backscattered diffraction analysis revealed that regions with localized crystal orientation rotation appeared before ridge kinks formed as surface relief. In this paper, it is called as pre-kink The observed pre-kinks were composed of two separate regions rotated in opposite directions to each other and distinguished from one another by the three boundaries. A transmission electron microscopy observation revealed that the boundaries of the pre-kink are sub-boundaries consisting of edge dislocation array, and both its ends are terminated within the matrix. These characteristics match the reported that of regular ridge kink boundaries. In addition, while pre-kinks do not possess the ability of complete reversibility, its boundaries are capable of moving elastically. 85 6 9.
28.	Tsubasa Tokuzumi, Shigeto Yamasaki, Wansong Li, Masatoshi Mitsuhara, Hideharu Nakashima, Morphological and crystallographic features of kink bands in long-period stacking ordered Mg-Zn-Y alloy analyzed by serial sectioning SEM-EBSD observation method, Materialia, 10.1016/j.mtla.2020.100716, 12, 2020.08, We investigated the pseudo three-dimensional features of kink bands formed by the compression deformation of a directionally solidified Mg Zn Y alloy. The kink bands of interest included ridge kinks with clear surface relief and gentle kinks with almost no surface relief. Observation of surface undulation by laser microscopy and electron backscatter diffraction with serial sectioning by mechanical polishing revealed the pseudo three-dimensional morphology and crystal rotation of these kink bands. The features of the observed kink bands are explained by a pseudo three-dimensional arrangement of disclination lines. 85 6 9.
29.	Kazuki TONOTSUKA, Yoshikazu TODAKA, Nozomu ADACHI, Motohiro HORII, Kenichi TODA, Masatoshi MITSUHARA, Masumi IWASAKI, Yoshinori SHIIHARA, Yoshitaka UMENO, Minoru NISHIDA, Hideharu NAKASHIMA, Effect of lattice defects on tribological behavior for high friction coefficient under TCP added PAO lubrication in nanostructured steels, ISIJ International, 10.2355/isijinternational.ISIJINT-2019-707, 60, 6, 1358-1365, 2020.06, The effect of lattice defects on the tribological behavior under tricresyl phosphate (TCP) added poly-α-olefin (PAO) lubrication was investigated in the nanostructured steels produced by heavy plastic deformation processes. In surface-nanostructured SUJ2-bearing steel, tribological behavior with high friction coefficient was observed in ball-on-disk tests when compared to non-deformed steel. In addition, a similar phenomenon was observed in ultra-low carbon (ULC) steel with a high density of lattice defects (grain boundary, dislocation and so on). By increasing the density of lattice defects, a higher friction coefficient was observed. The reason for the tribological behavior with high friction coefficient seems to be that the compound film of Fe-O-P system formed in the ball-on-disk test was worn down..
30.	Wansong Li, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, In situ EBSD study of deformation behavior of primary α phase in a bimodal Ti-6Al-4V alloy during uniaxial tensile tests, Materials Characterization, 10.1016/j.matchar.2020.110282, 163, 2020.05, [URL], Uniaxial tension experiments and electron backscatter diffraction were performed on a bimodal Ti-6Al-4V alloy to study in situ the deformation behavior of primary hcp-Ti (α_p). It was found that the strain could be accommodated by the activation of slip systems and by grain rotations. The prismatic slip was the primary slip mode of the α_p. From the analysis of kernel average misorientation and geometrically necessary dislocation, it was shown that the dislocations mainly distributed in the vicinity of grain and sub-grain boundaries, and part of the dislocations distributed around slip lines. It was the dislocation activities that led to the formation of the low angle grain boundary and its transformation to the high angle grain boundary. It's important that tracking of deformation heterogeneities with significance to performance. By analyzing the rotation angle, average rotation rate, and rotation path of grains, it was shown that grain rotation heterogeneity occurred during the deformation. From the observation of the loading direction, grain rotation paths kept with the texture evolution direction of all α_p. The grains activated in the basal slip gradually rotated to the ⟨101¯1⟩ pole and enhanced the intensity of the ⟨101¯1⟩ texture. Meanwhile, the grains activated in prismatic or 1st-order pyramidal slip rotated to the ⟨101¯0⟩ pole and enhanced the intensity of the ⟨101¯0⟩ texture. Grain rotation and texture evolution are related to mechanical properties..
31.	Satoshi Hata, Hiromitsu Furukawa, Takashi Gondo, Daisuke Hirakami, Noritaka Horii, Ken Ichi Ikeda, Katsumi Kawamoto, Kosuke Kimura, Syo Matsumura, Masatoshi Mitsuhara, Hiroya Miyazaki, Shinsuke Miyazaki, Mitsu Mitsuhiro Murayama, Hideharu Nakashima, Hikaru Saito, Masashi Sakamoto, Shigeto Yamasaki, Electron tomography imaging methods with diffraction contrast for materials research, Microscopy, 10.1093/jmicro/dfaa002, 69, 3, 141-155, 2020.03, Transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) enable the visualization of three-dimensional (3D) microstructures ranging from atomic to micrometer scales using 3D reconstruction techniques based on computed tomography algorithms. This 3D microscopy method is called electron tomography (ET) and has been utilized in the fields of materials science and engineering for more than two decades. Although atomic resolution is one of the current topics in ET research, the development and deployment of intermediate-resolution (non-atomic-resolution) ET imaging methods have garnered considerable attention from researchers. This research trend is probably not irrelevant due to the fact that the spatial resolution and functionality of 3D imaging methods of scanning electron microscopy (SEM) and X-ray microscopy have come to overlap with those of ET. In other words, there may be multiple ways to carry out 3D visualization using different microscopy methods for nanometer-scale objects in materials. From the above standpoint, this review paper aims to (i) describe the current status and issues of intermediate-resolution ET with regard to enhancing the effectiveness of TEM/STEM imaging and (ii) discuss promising applications of state-of-the-art intermediate-resolution ET for materials research with a particular focus on diffraction contrast ET for crystalline microstructures (superlattice domains and dislocations) including a demonstration of in situ dislocation tomography..
32.	Kazuaki Okada, Koji Obayashi, Yoshikazu Todaka, Nozomu Adachi, Masatoshi Mitsuhara, Friction property under lubrication for case hardening steel subjected to combined thermomechanical treatment with excess vacuum carburizing and subsequent severe plastic deformation and induction hardening, Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 10.2355/tetsutohagane.TETSU-2019-082, 106, 4, 194-204, 2020.01, [URL], Friction property of the case hardening steel subjected to excess vacuum carburizing and subsequent severe plastic deformation and induction hardening was evaluated by the traction test. The purpose of this study is to clarify the effect of fine microstructure on the friction property, focusing on the interaction between the fine microstructure and the lubricating oil additives. The vacuum carburizing treatment is performed at the hyper-eutectoid composition of 1.0 mass% C. Subsequently, the carburized surface was formed the white layer by the surface-nanostructured wearing (SNW) process, and the specimen having the initial microstructure was subjected to induction hardening. The microstructure of the condition with SNW was finer compared to that with SNW-less. According to the traction test, traction coefficient (ì) in the specimen having the fine microstructure on the rolling contact surface decreased. Therefore, it was found that the decrease of ì could be achieved by the application of high-density lattice defects (grain boundaries in this study). After the test, the rolling contact surface of the specimen with fine microstructure became smooth, and the surface showed high reactivity with the lubricating oil additives and formed the compound film of Fe-O-P system having a fine, spherical morphology. The surface roughness was improved by the presence of the wear particles on the surface. Therefore, it was thought that the ì was decreased because the transition to a mild friction condition was caused due to the dispersion of the contact pressure..
33.	Mitsuhiro Matsuda, Ryo Matsuoka, Minoru Nishida, Masatoshi Mitsuhara, Microstructural characterization of martensite with long period stacking order structure in Hf-Co-Pd alloy, Materials Transactions, 10.2320/matertrans.MT-MJ2019002, 61, 1, 27-32, 2020.01, [URL], Microstructural characterization of martensite with long period stacking order (LPSO) structure in a Hf-Co-Pd alloy was investigated by transmission electron microscopy (TEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). LPSO structure with six stacking sequences; 6O (orthorhombic) (Space group: Immm), were newly discovered. Based on the electron diffraction experiments, the lattice parameters of LPSO phase were estimated to be a = 0.33 nm, b = 0.45nm and c = 1.53 nm. The formation mechanism of martensite with LPSO structure and the crystallographic orientation relationship between parent B2 phase and 6O martensite are also discussed..
34.	Yoshiki Kawano, Michihiro Sato, Tsuyoshi Mayama, Masatoshi Mitsuhara, Shigeto Yamasaki, Quantitative evaluation of slip activity in polycrystalline α-titanium considering non-local interactions between crystal grains, International Journal of Plasticity, 10.1016/j.ijplas.2019.12.001, 127, 2020.01, [URL], An indicator to predict the slip operation at the crystal-grain level, namely slip operation factor (SOF), was established as a function of the Schmid factor (SF) and critical resolved shear stress (CRSS). Plastically "soft" and "hard" regions were estimated by the Schmid factor values normalized by the CRSS - the normalized Schmid factor (NSF). The effect of the interaction among the regions was incorporated into SOF. A microstructural map of α-titanium (α-Ti) was obtained by the electron backscatter diffraction patterns. Several spatial distributions of SOF were calculated based on the map by changing the interaction range among the regions. The distributions were compared with those of the strains obtained by the crystal plasticity finite element (CPFE) analysis. Good agreement between the distributions was found near the macroscopic yield point when the interaction range was appropriate, although some significant differences between the distributions were also noticed after the yielding point. The prediction accuracy by SOF was higher than that by SF and NSF. The reasons for the high accuracy revealed by the SOF analysis and the differences between the distributions indicated by the CPFE analysis were also investigated..
35.	河野義樹, 眞山剛, 光原昌寿, 佐藤満弘, RD-splitの集合組織を有するαチタンのイメージベース結晶塑性解析, 日本機械学会2019年度年次大会講演論文集, J04205, 2019.09.
36.	山﨑重人、光原昌寿、中島英治, 窒素を有効利用した700℃級次世代耐熱フェライト鋼の開発, ふぇらむ, 24, 8, 498-504, 2019.08.
37.	河野義樹, 眞山剛, 光原昌寿, 佐藤満弘, 変形の進展に伴う結晶格子回転を考慮したαチタン微視組織の結晶塑性解析, 日本材料学会第68期学術講演会講演論文集, 49-50, 2019.05.
38.	Shigeto Yamasaki, Tomo Okuhira, Masatoshi Mitsuhara, Hideharu Nakashima, Jun Kusui, Mitsuru Adachi, Effect of Fe addition on heat-resistant aluminum alloys produced by selective laser melting, Metals, 10.3390/met9040468, 9, 4, 2019.04, [URL], The effect of Fe addition on the high-temperature mechanical properties of heat-resistant aluminum alloys produced by selective laser melting (SLM) was investigated in relation to the alloy microstructures. Fe is generally detrimental to the properties of cast aluminum alloys; however, we found that Fe-containing alloys produced by SLM had improved high-temperature strength and good ductility. Microstructural observations revealed that the increase in the high-temperature strength of the alloys was due to the dispersion of fine rod-shaped Fe-Si-Ni particles unique to the SLM material instead of the cell-like structure of eutectic Si..
39.	光原昌寿, 耐熱鋼の常識と非常識, ふぇらむ, 24, 4, 212-216, 2019.04.
40.	Kazuki Tonotsuka, Yoshikazu Todaka, Nozomu Adachi, Motohiro Horii, Kenichi Toda, Masatoshi Mitsuhara, Masumi Iwasaki, Yoshinori Shiihara, Yoshitaka Umeno, Minoru Nishida, Hideharu Nakashima, Effect of lattice defects on tribological behavior for high friction coefficient under TCP added PAO lubrication in nanostructured steels, Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 10.2355/tetsutohagane.TETSU-2018-043, 105, 2, 160-167, 2019.02, [URL], Synopsis: The effect of lattice defects on the tribological behavior for high friction coefficient under tricresyl phosphate (TCP) added poly-α-olefin (PAO) lubrication was investigated in the nanostructured steels produced by heavy plastic deformation processes. In the surface-nanostructured SUJ2 bearing steel, the tribological behavior with high friction coefficient was observed in the ball-on-disk tests in comparison with the non-deformed steel. In addition, the similar phenomenon was observed in the ultra-low carbon (ULC) steel with high-density of lattice defects (grain boundary, dislocation and so on). By increasing the density of lattice defects, higher friction coefficient was shown. The reason of the tribo-logical behavior with high friction coefficient seems that the compound film of Fe-O-P system formed in the ball-on-disk test was worn..
41.	松田光弘, 光原昌寿, 西田稔, Zr-Co基合金マルテンサイト相における長周期積層構造, まてりあ, 10.2320/materia.58.90, 58, 2, 90-90, 2019.02.
42.	Yoshiki Kawano, Tetsuya Ohashi, Tsuyoshi Mayama, Masatoshi Mitsuhara, Yelm Okuyama, Michihiro Sato, Crystal plasticity analysis of microscopic deformation mechanisms and GN dislocation accumulation depending on vanadium content in ¢ phase of two-phase Ti alloy, Materials Transactions, 10.2320/matertrans.M2019016, 60, 6, 959-968, 2019.01, [URL], Inhomogeneous deformation of a single ¡-¢ colony in a Ti6Al4V alloy under uniaxial tensile conditions was numerically simulated using a crystal plasticity finite element (CPFE) method, and we predicted density changes in geometrically necessary dislocations (GNDs) depending on the vanadium concentration in the ¢ phase (V_¢). The geometric model for the CPFE analysis was obtained by converting data from electron back-scatter diffraction patterns into data for the geometric model for CPFE analysis, using a data conversion procedure previously developed by the authors. The results of the image-based crystal plasticity analysis indicated that smaller V_¢ induced greater stress in the ¡ phase and smaller stress in the ¢ phase close to the ¡-¢ interfaces in the initial stages of deformation because of the elastically softer ¢ phase with lower V_¢. This resulted in greater strain gradients and greater GND density close to the interfaces in the initial stages of deformation within the single ¡-¢ colony when the ¢ phase plastically does not deform..
43.	Mitsuharu Yonemura, Masatoshi Mitsuhara, Damage mechanism of nickel-based creep-resistant alloys strengthened by the Laves phase at the grain boundary, Philosophical Magazine, 10.1080/14786435.2018.1524161, 98, 36, 3247-3266, 2018.12, [URL], This study proposes a design guideline for polycrystal Ni-based model alloys with high ductility and 100-MPa creep rupture strength beyond 800°C and 10⁵h. These alloys are strengthened by both the precipitation of fine γ′ particles inside the grain and the Laves phase at the grain boundary. For investigating the damage mechanism, transformation from the non-equilibrium Laves phase to the σ phase at the grain boundary and formation of the equilibrium needle-like Laves phase inside the grain are promoted by increasing the Fe concentration. The rupture time of Fe-free alloys significantly increases because of the equilibrium Laves phase at the grain boundary owing to a suitable Mo equivalent. In particular, W addition can help achieve high-temperature creep strength. The precipitate-free zone (PFZ) is predominantly formed by prior migration at the grain boundary without precipitation. Creep rupture occurs at the precipitation/matrix interface in the PFZ. Therefore, transformation control from the Laves to the σ phase at the grain boundary suppresses creep degradation. Consequently, a Ni-based alloy with strength >100 MPa and rupture elongation >20% at 800°C and 10⁵h is fabricated using Larson–Miller parameter conversion, and the alloy design guideline’s validity is confirmed..
44.	河野義樹, 大橋鉄也, 眞山剛, 光原昌寿, 奥山彫夢, 佐藤満弘, 二相チタン合金におけるα-β界面近傍のGN転位堆積とβ相の降伏条件の関係, 日本機械学会M&M2018材料力学カンファレンス講演論文集, OS01-45-OS01-49, 2018.12.
45.	K. Yamamoto, R. Noguchi, M. Mitsuhara, M. Nishida, T. Hara, D. Wang, H. Nakashima, Wide range control of Schottky barrier heights at metal/Ge interfaces with nitrogen-contained amorphous interlayers formed during ZrN sputter deposition, Semiconductor Science and Technology, 10.1088/1361-6641/aae4bd, 33, 11, 2018.10, [URL], A ZrN contact on a Ge substrate can alleviate the intrinsic Fermi-level pinning (FLP) position toward conduction band edge, which is induced by an amorphous interlayer (a-IL) containing nitrogen atoms at the interfaces. Since the a-IL could be retained on the Ge surface, we demonstrated a wide range Schottky barrier height (SBH) control for metal/a-IL/Ge contacts. The sputtering power for ZrN affects the SBH, pinning factor (S), and effective charge neutral level. A high S value of 0.26 was achieved, which is comparable to that of metal/Si contacts. A model was proposed for explaining the mechanism of this effective FLP alleviation..
46.	河野義樹, 西尾一輝, 大橋鉄也, 眞山剛, 光原昌寿, 奥山彫夢, 佐藤満弘, Ti-6Al-4V合金の微視的変形におけるβ相のVanadium濃度依存性の結晶塑性解析, 日本機械学会北海道支部第56回講演会講演概要集, 59-60, 2018.10.
47.	Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Development of High-Chromium Ferritic Heat-Resistant Steels with High Nitrogen Content, ISIJ International, 58, 6, 2018.06.
48.	Yuki Uchida, Sho Nakandakari, Kenji Kawahara, Shigeto Yamasaki, Masatoshi Mitsuhara, Hiroki Ago, Controlled Growth of Large-Area Uniform Multilayer Hexagonal Boron Nitride as an Effective 2D Substrate, ACS Nano, 10.1021/acsnano.8b03055, 12, 6, 6236-6244, 2018.06, [URL], Multilayer hexagonal boron nitride (h-BN) is an ideal insulator for two-dimensional (2D) materials, such as graphene and transition metal dichalcogenides, because h-BN screens out influences from surroundings, allowing one to observe intrinsic physical properties of the 2D materials. However, the synthesis of large and uniform multilayer h-BN is still very challenging because it is difficult to control the segregation process of B and N atoms from metal catalysts during chemical vapor deposition (CVD) growth. Here, we demonstrate CVD growth of multilayer h-BN with high uniformity by using the Ni-Fe alloy film and borazine (B ₃ H ₆ N ₃ ) as catalyst and precursor, respectively. Combining Ni and Fe metals tunes the solubilities of B and N atoms and, at the same time, allows one to engineer the metal crystallinity, which stimulates the uniform segregation of multilayer h-BN. Furthermore, we demonstrate that triangular WS ₂ grains grown on the h-BN show photoluminescence stronger than that grown on a bare SiO ₂ substrate. The PL line width of WS ₂ /h-BN (the minimum and mean widths are 24 and 43 meV, respectively) is much narrower than those of WS ₂ /SiO ₂ (44 and 67 meV), indicating the effectiveness of our CVD-grown multilayer h-BN as an insulating layer. Large-area, multilayer h-BN realized in this work will provide an excellent platform for developing practical applications of 2D materials..
49.	Chengwu wang, Syuhei kurokawa, Toshiro Doi, Julong Yuan, Masatoshi Mitsuhara, Weifeng Yao, Kehua Zhang, SEM, AFM and TEM Studies for Femtosecond Laser Irradiation Effect on 4H-SiC Substrate at Near Threshold Fluence, the ECS Journal of Solid State Science and Technology, 7, 2, 29-34, 2018.02.
50.	Mitsuhiro Matsuda, Yoshimasa Shinagawa, Kazuki Takashima, Masatoshi Mitsuhara, Minoru Nishida, Characterization of Antiphase Boundary-Like Structure of B33 Martensite in ZrCoPd Alloy, Materials Transactions, 10.2320/matertrans.M2018146, 59, 10, 1567-1573, 2018.01, [URL], The antiphase boundary (APB)-like structure of B33 martensite in a ZrCoPd alloy was investigated by means of conventional transmission electron microscopy and high-Angle annular dark-field scanning transmission electron microscopy. The APB-like structure had atomic shifts along both the c-Axis on the (010)_B33 basal plane and the b-Axis on the (001) _B33 plane. The displacement vector of the APB-like structure could be expressed as R = (0, 1/4, =)_B33 The formation mechanism of the APB-like structure was also elucidated..
51.	Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Development of high-chromium ferritic heat-resistant steels with high nitrogen content, isij international, 10.2355/isijinternational.ISIJINT-2017-758, 58, 6, 1146-1154, 2018.01, [URL], New ferritic heat-resistant steels with high nitrogen content were prototyped and their microstructures and mechanical properties at high temperature were evaluated. The addition of 0.3 mass% N into ferritic steels was achieved without the formation of blowholes by applying pressurized melting methods under an atmosphere of up to 4.0 MPa. The high-nitrogen ferritic heat-resistant steels contained several kinds of nitrides within the lath martensitic structure. V-rich coarse particles were identified as crystallized MN. Fine VN or Cr ₂ N particles were precipitated on the martensitic grain boundaries such as prior-austenite grain boundary, packet boundary, block boundary and lath boundary depending on the V content. The martensitic structure of the high-nitrogen steels contained a hierarchical microstructure including martensitic laths, blocks, packets, and prior-austenitic grains. These martensitic structures satisfied the Kurdjumov–Sachs relationship as with conventional carbon steel. The creep strengths of the prototyped steels were comparable with those of Gr. 91 steel, albeit lower than those of Gr. 92. Additional precipitates other than nitrides are required for further strengthening of the developed steels..
52.	Chengwu Wang, Syuhei Kurokawa, Toshiro Doi, Julong Yuan, Li Fan, Masatoshi Mitsuhara, Huizong Lu, Weifeng Yao, Yu Zhang, Kehua Zhang, SEM, AFM and TEM studies for repeated irradiation effect of femtosecond laser on 4H-SiC surface morphology at near threshold fluence, ECS Journal of Solid State Science and Technology, 10.1149/2.0421712jss, 7, 2, P29-P34, 2018.01, [URL], In order to investigate the interaction of femtosecond (fs) laser and hard-to-process semiconductor material 4H-SiC at near-threshold fluence, fs laser was repeatedly irradiated to SiC surface at different scanning velocities and scan times. The evolutions of surface morphologies were observed and discussed according to Scanning Electron Microscope (SEM), Atomic Force Microscope (AFM) and Transmission Electron Microscope (TEM). Discontinuous zones were ablated in SiC surface after laser irradiation at near-threshold fluence 1.1 J/cm². High spatial frequency rippled structures substantially shorter than the wavelength of incident fs laser were fabricated. The width of the ablated zones increased with lower scanning velocities and more scan times. The mechanism was discussed. Incubation effect occurred in the subsurface of SiC triggered inhomogeneous energy deposition accumulation, which was responsible for the discontinuous ablated zones. Moreover, an amorphous layer with a thickness of about 30 nm was observed in 4H-SiC surface where no ablation was induced after repeated irradiation. This was discussed and explained from the aspects of molecular dynamics simulations of fs laser irradiation to semiconductor materials..
53.	戸髙義一, 足立望, 椎原良典, 梅野宜崇, 光原昌寿, 西田稔, 日野正裕, 大場洋次郎, 表層ナノ組織化した鉄鋼材料における転がり疲労特性, M&M2018 材料力学カンファレンス, 10.1299/jsmemm.2018.OS1420, 2018.01.
54.	Masayuki Takano, Keiji Kuroda, Kohei Hase, Shuuto Tanaka, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Effect of Bi or Sb addition on high temperature deformation behavior in Sn-Cu-Ni solder alloys, Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 10.2320/jinstmet.J2017025, 81, 11, 502-509, 2017.09, [URL], Global concerns over the environmental impact and health effects of the lead-based solders have led to the development of lead-free solder alloys. Further improvements in the reliability of lead-free solder alloys at high temperatures are required for downsizing of electronic components in vehicles. In this work, tensile and creep tests and microstructure analysis were carried out to determine the effect of Bi or Sb addition on high-temperature deformation behavior in Sn-Cu-Ni solder alloys. The addition of Bi or Sb increased the strength of the Sn-Cu-Ni solder alloys. The stress exponent was estimated to be ≥3, indicating that the high- Temperature deformation was controlled by dislocation creep. Furthermore, in both the alloys, the stress exponent observed in the low stress region was nearly equal to 3 and discontinuously increased to ≥7 in the high stress region. For Sb addition, the solute atmosphere drag mechanism was observed in the low stress region..
55.	Takanori Ito, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Minoru Nishida, Mitsuharu Yonemura, Microstructure and creep property in polycrystalline Ni-based alloy with intergranular intermetallics, Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 10.2355/tetsutohagane.TETSU-2016-107, 103, 7, 434-442, 2017.07, [URL], Creep properties and microstructures for a polycrystalline Ni-based heat-resistant alloy whose grain boundaries were covered by dense intergranular intermetallics were investigated. Creep tests were carries out at 850°C and 80-130 MPa. The creep strength of this alloy was higher than the Alloy617 and HR6W, and equal to the Alloy740, which are pre-existing candidate materials for steam pipes of A-USC power plant. The retardation of acceleration of creep rate was observed characteristically in the creep curves. This retardation behavior was deeply related to the superior creep strength of this alloy. The spherical Ni3Al (γ') particles were distributed uniformly in the grain interior, whose coarsening behavior was monotonically dependent on the creep time. The intermetallics of Laves phase and s pahse were formed densely at grain boundary. High coverage ratio of the intergranular intermetallics was maintained until the later stage of acceleration creep region. Therefore, it suggested that the retardation of creep acceleration was not caused by the precipitates behavior of intragranular γ' particles and intergranular intermetallics, though both the precipitates were understandably effective against the creep strengthening. The plate-like Laves phase was formed in the grain interior during creep. The evolution of volume fraction of intragranular Laves phase depended on not creep time but creep strain. From the results of SEM/EBSD analyses and TEM observations, it revealed that the intragranular Laves phase enhanced the work-hardenability due to the constraint on plasticity and originated the retardation of creep acceleration..
56.	Motomichi Koyama, Keita Yamanouchi, Qinghua Wang, Shien Ri, Yoshihisa Tanaka, Yasuaki Hamano, Shigeto Yamasaki, Masatoshi Mitsuhara, Masataka Ohkubo, Hiroshi Noguchi, Kaneaki Tsuzaki, Multiscale in situ deformation experiments A sequential process from strain localization to failure in a laminated Ti-6Al-4V alloy, Materials Characterization, 10.1016/j.matchar.2017.04.010, 128, 217-225, 2017.06, [URL], The microscopic factors causing tensile failure of an α/β laminated Ti-6Al-4V alloy were investigated through in situ scanning electron microscopy and sampling moiré at an ambient temperature. Specifically, multiscale in situ microscopic observations were conducted to extract the most crucial factor of the failure. Slip localization in the vicinity of an intergranular α-sheet was clarified to be the primary factor that causes failure of the Ti-6Al-4V alloy. In addition, no relationship between interfacial strain localization and macroscopic shear localization at 45 degrees against the tensile direction was observed..
57.	Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Mitsuharu Yonemura, Evaluation of local creep strain in face-centred cubic heatresistant alloys using electron backscattered diffraction analysis, ISIJ International, 10.2355/isijinternational.ISIJINT-2016-712, 57, 5, 851-856, 2017.05, [URL], Creep strain in SUS347HTB austenitic heat-resistant steel and Ni-based heat-resistant alloys was evaluated by electron backscattered diffraction (EBSD). Localized crystallographic misorientations in the crept samples were quantified by using misorientation indicators such as kernel average misorientation and grain reference orientation deviation. In most crept samples, the misorientation indicators increased with creep deformation. However, this trend was not observed for alloys with dense dispersions. We proposed a method to extract and evaluate data only near the grain boundary from the total EBSD data. For Ni-based alloys, the misorientation indicators tended to increase preferentially near grain boundaries. Conversely, there was no substantial difference between the misorientation indicators near grain boundaries and the intergranular region for SUS347HTB. Consequently, although it is necessary to limit the region for evaluating the misorientation indicators according to the dispersion density of the reinforcing phase in the materials, the misorientation indicators, such as kernel average misorientation or grain reference orientation deviation, are useful for evaluating the creep strain in face-centred cubic heat-resistant alloys..
58.	Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Deformation microstructure and fracture behavior in creep-exposed Alloy 617, Materials Transactions, 10.2320/matertrans.M2016407, 58, 3, 442-449, 2017.03, [URL], The causes of the change in creep rupture ductility with the creep test temperature in Alloy 617 were investigated. The rupture ductility in the creep test was low at 700°C, whereas it was high at 800°C. Although the rupture ductility depended on the creep test temperature, creep fracture occurred due to cavity formation at the grain boundaries under all the creep conditions. In the sample crept at 800°C, subgrains developed with creep deformation. However, the crept sample at 700°C fractured before the subgrain formation. Although the work hardening due to the creep deformation occurred at 700°C, the work hardening in the sample crept at 800°C was small. The deformation of the grains was suppressed by the work hardening and by γ particle dispersion strengthening at 700°C. The difference in the strength in the crystal grains that resulted from the microstructure formed during creep caused the difference in the growth of the cavities..
59.	Joshua A. Stuckner, Guo Quan Lu, Masatoshi Mitsuhara, William T. Reynolds, Mitsuhiro Murayama, The Influence of Processing Conditions on the 3-D Interconnected Structure of Nanosilver Paste, IEEE Transactions on Electron Devices, 10.1109/TED.2016.2639363, 64, 2, 494-499, 2017.02, [URL], Nanosilver paste is a promising material for power device interconnects. Interconnects are fabricated from nanosilver paste through a sintering process that drives off solvents and dispersants and fuses the silver particles. The integrity of the resulting interconnect is affected by the silver microstructure. This paper explored how sintering temperature, atmosphere, and time influenced microstructure as revealed by transmission electron microscopy and 3-D imaging via dual-beam serial sectioning. Nanosilver paste was sintered in combinations of the following parameters: A sintering atmosphere of air or nitrogen; temperatures of 120 °C or 255 °C; and sintering times of 5, 10, or 30 min. For the 255 °C temperature, oxygen in air facilitated removal of organic solvent and dispersant molecules and led to a microstructure with a coarser ligament network than samples sintered at the same temperature and times in nitrogen. The coarser ligament network was characterized by thick connected ligaments, large connected pores, and few isolated pores; this microstructure has been correlatedwith improved mechanical strength. Details of both 2-D and 3-D ligament network morphology, grain morphology, grain size, and the associated grain boundaries are discussed..
60.	Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Development of high-chromium ferritic heat-resistant steels with high-nitrogen addition, Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 10.2355/tetsutohagane.TETSU-2016-057, 103, 1, 64-72, 2017.01, [URL], New ferritic heat resistant steels with high nitrogen content were developed and these microstructure and the mechanical properties at high temperature were evaluated. 0.3 mass% N could be added into ferritic steels without blow holes by applying pressurized melting methods with pressurized atmosphere up to 4.0 MPa. The high nitrogen ferritic heat resistant steels contained several kind of nitrides within the lath martensitic structure. V-rich coarse particles were identified as crystallized VN. Fine VN or Cr₂N particles were precipitated on the martensitic grain boundaries depending on the amount of V content. The martensitic structure in the high nitrogen steels contained a hierarchical structure of martensitic lath, block, packet and prior austenitic grain. These martensitic structure satisfied the K-S relationship as with the conventional carbon steel. The creep strength of the developed steels were comparable to Gr.91 steel though weaker than Gr.92. It is required additional precipitates other than nitrides for further strengthening of the developed steels..
61.	Masayuki Takano, Keiji Kuroda, Kohei Hase, Shuuto Tanaka, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Effect of Cu and Ni addition on high temperature deformation behavior in Sn-Cu-Ni solder alloys, Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 10.2320/jinstmet.J2016069, 81, 7, 337-344, 2017.01, [URL], In recent years, it has become necessary to develop lead substitutes, such as lead-free solder alloys, because of increased environmental concerns regarding the use of leaded materials. In addition, electronic components that use lead-free solder alloys will need to be smaller and usable at higher operating temperatures in next-generation semiconductor devices. Therefore, lead-free solder alloys must be made more reliable. In this work, tin-copper-nickel( Sn-Cu-Ni) solder alloys, Sn-Cu solder alloys, and Sn-Ni solder alloys, as well as 99.96 mass% pure Sn, were subjected to tensile testing. The results showed the effects of adding Cu and Ni to Sn on the high-temperature deformation behavior of the Sn-Cu-Ni solder alloys. For each alloy and Sn, the stress exponent was estimated to be
62.	Masaru Itakura, Shin ichi Murayama, Masatoshi Mitsuhara, Minoru Nishida, Hiroaki Koga, Masaki Nakano, Hirotoshi Fukunaga, Microstructures of Ta-inserted SmCo₅/Fe nanocomposite thick film magnets, Materials Transactions, 10.2320/matertrans.M2017035, 58, 10, 1351-1355, 2017.01, [URL], Ta-inserted SmCo₅/Fe nanocomposite thick film magnets were synthesized by high-speed pulsed laser deposition followed by pulse annealing. The microstructures of the film magnets were characterized by high-resolution scanning electron microscopy and scanning transmission electron microscopy. The as-deposited thick film possessed a multilayered Sm-Co/Ta/α-Fe/Ta structure with amorphous Sm-Co layers and [110]-oriented crystalline α-Fe layers. After pulse annealing, many fine grains of Laves phase TaCo₂ were formed, and then the multilayered structure was converted to a granular nanocomposite thick film magnet composed of fine crystalline grains of Sm(Co, Fe)₅, α-(Fe, Co), and TaCo₂. The volume fractions and grain sizes of hard magnetic Sm(Co, Fe)₅, soft magnetic α-(Fe, Co), and TaCo₂ were controlled by the thicknesses of the Ta layer, producing a nanocomposite thick film magnet with good exchange coupling..
63.	Fumiya Watanabe, Zeid A. Nima, Takumi Honda, Masatoshi Mitsuhara, Minoru Nishida, Alexandru S. Biris, X-ray photoelectron spectroscopy and transmission electron microscopy analysis of silver-coated gold nanorods designed for bionanotechnology applications, Nanotechnology, 10.1088/1361-6528/28/2/025704, 28, 2, 2017.01, [URL], Multicomponent nano-agents were designed and built via a core-shell approach to enhance their surface enhanced Raman scattering (SERS) signals. These nano-agents had 36 nm ï¿½12 nm gold nanorod cores coated by 4 nm thick silver shell films and a subsequent thin bifunctional thiolated polyethylene glycol (HS-PEG-COOH) layer. Ambient time-lapsed SERS signal measurements of these functionalized nanorods taken over a two-week period indicated no signal degradation, suggesting that large portions of the silver shells remained in pure metallic form. The morphology of the nanorods was characterized by transmission electron microscopy (TEM) and ultra-high resolution scanning TEM. X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) were utilized to assess the oxidation states of the silver shells covered by HS-PEG-COOH. The binding energies of Ag 3d XPS spectra yielded very small chemical shifts with oxidation; however, the AES peak shapes gave meaningful information about the extent of oxidation undergone by the nano-agent. While the silver shells without HS-PEG-COOH coatings oxidized significantly, the silver shells with HS-PEG-COOH remained predominantly metallic. In fact, six month-old samples still retained mostly metallic silver shells. These findings further demonstrate the stability and longevity of the nanostructures, indicating their significant potential as plasmonically active agents for highly sensitive detection in various biological systems, including cancer cells, tissues, or even organisms..
64.	Takanori Ito, Shigeto Yamasaki, Masatoshi Mitsuhara, Minoru Nishida, Mitsuharu Yonemura, Effect of intergranular carbides on creep strength in nickel-based heat-resistant alloys, Materials Transactions, 10.2320/matertrans.M2016291, 58, 1, 52-58, 2017.01, [URL], Creep behaviors and microstructures for two Ni-based heat-resistant alloys with different carbon contents were investigated. The chemical compositions of the alloys were Ni-20Cr-15Co-6Mo-1Ti-2Al-2Nb-0.004 and 0.021C (mass%). The 0.004C and 0.021C alloys are referred to as the low-and high-C alloys, respectively. After solid-solution treatment at 1373 K for 1 h and isothermal annealing at 1023 K for 32 h, fine Ni3Al (γ) particles were formed in the grain interior of both alloys. The average diameter and number density of γ particles were similar in both alloys. M23C6 carbides were formed on grain boundaries after the isothermal annealing. Coverage ratios with the carbides in the high-C alloy were higher than that in the low-C alloys. Creep tests were performed at 1123 K and 130 MPa. The rupture time for the high-C alloy was longer than that for the low-C alloy, though both minimum creep rates were similar. In the high-C alloy, the creep strain was stored uniformly in the grain interior and the formation of a precipitate-free zone during the creep deformation was suppressed. Therefore, intergranular carbides with a high coverage ratio decreased the creep rate in the acceleration region..
65.	L. Morsdorf, O. Jeannin, D. Barbier, Masatoshi Mitsuhara, D. Raabe, C. C. Tasan, Multiple mechanisms of lath martensite plasticity, Acta Materialia, 10.1016/j.actamat.2016.09.006, 121, 202-214, 2016.12, [URL], The multi-scale complexity of lath martensitic microstructures requires scale-bridging analyses to better understand the deformation mechanisms activated therein. In this study, plasticity in lath martensite is investigated by multi-field mapping of deformation-induced microstructure, topography, and strain evolution at different spatial resolution vs. field-of-view combinations. These investigations reveal site-specific initiation of dislocation activity within laths, as well as significant plastic accommodation in the vicinity of high angle block and packet boundaries. The observation of interface plasticity raises several questions regarding the role of thin inter-lath austenite films. Thus, accompanying transmission electron microscopy and synchrotron x-ray diffraction experiments are carried out to investigate the stability of these films to mechanical loading, and to discuss alternative boundary sliding mechanisms to explain the observed interface strain localization..
66.	Jesbains Kaur, Noriyuki Kuwano, Khairur Rijal Jamaludin, Masatoshi Mitsuhara, Hikaru Saito, Satoshi Hata, Shuhei Suzuki, Hideto Miyake, Kazumasa Hiramatsu, Hiroyuki Fukuyama, Electron microscopy analysis of microstructure of postannealed aluminum nitride template, Applied Physics Express, 10.7567/APEX.9.065502, 9, 6, 2016.06, [URL], The microstructure of an AlN template after high-temperature annealing was investigated by transmission electron microscopy (TEM). The AlN template was prepared by depositing an AlN layer of about 200nm thickness on a sapphire (0001) substrate by metal-organic vapor phase epitaxy. The AlN template was annealed under (N₂ + CO) atmosphere at 1500-1650 °C. TEM characterization was conducted to investigate the microstructural evolution, revealing that the postannealed AlN has a two-layer structure, the upper and lower layers of which exhibit Al and N polarities, respectively. It has been confirmed that postannealing is an effective treatment for controlling the microstructure..
67.	K. Jesbains, N. Kuwano, K. R. Jamaludin, H. Miyake, K. Hiramatsu, S. Suzuki, Masatoshi Mitsuhara, Satoshi Hata, Y. Soejima, Reduction of dislocation density of aluminium nitride buffer layer grown on sapphire substrate, Journal of Mechanical Engineering and Sciences, 10.15282/jmes.10.1.2016.14.0182, 10, 1, 1908-1916, 2016.06, [URL], An aluminium nitride (AlN) buffer layer with 200 nm thickness was grown on (0001) sapphire substrate using the metal-organic vapour phase epitaxy (MOVPE) method in a low-pressure furnace, followed by a clean-up treatment of sapphire substrate at 1100°C. Thereafter, the AlN buffer layer was annealed at a high temperature in the range of 1500°C to 1700°C for 2 hours under the atmosphere of N₂+CO. The objective of this research is to determine the microstructure changes with different annealing temperatures. Cross-sectional TEM has revealed that, after annealing at 1500°C, two types of defects remained in the AlN buffer layer: inverted cone shape domains and threading dislocations. The former domains were observed in an image taken with diffraction of g=0002, but not in an image with g=1010. The morphology and the diffraction condition for the image contrast strongly, suggesting that the domains are inversion domains. The threading dislocations were invisible in the image taken with the diffraction of g=0002, revealing that they were a-Type dislocations. However, after annealing at 1600oC, the inversion domains coalesced with each other to give a two-layer structure divided by a single inversion domain boundary at the centre of the AlN buffer layer. The density of threading dislocation was roughly estimated to be 5×109 cm^-2 after annealing at 1500°C, and to be reduced to 5×10⁸ cm^-2 after annealing at 1600°C. These experimental results validate the fact that the annealing temperature around 1600°C is high enough to remove the defects by the diffusion process. Therefore, it was discovered that high temperature annealing is an effective treatment to alter the microstructure of AlN thin films and remove defects by the diffusion process. Annealing at high temperature is recommended to increase the emission efficiency for fabrication of optoelectronic devices..
68.	M. Mitsuhara, T. Masuda, M. Nishida, T. Kunieda, H. Fujii, Precipitation Behavior During Aging in alpha Phase Titanium Supersaturated with Cu, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 10.1007/s11661-016-3344-7, 47A, 4, 1544-1553, 2016.04.
69.	M. Matsuda, M. Mitsuhara, K. Takashima, M. Nishida, Antiphase Boundary-Like Structure of B19 Martensite in Ti-Ni-Pd Shape Memory Alloy, MATERIALS TRANSACTIONS, 10.2320/matertrans.MB201505, 57, 3, 250-256, 2016.03.
70.	M. Mitsuhara, S. Yamasaki, M. Miake, Hideharu Nakashima, M. Nishida, J. Kusumoto, A. Kanaya, Creep strengthening by lath boundaries in 9Cr ferritic heat-resistant steel, PHILOSOPHICAL MAGAZINE LETTERS, 10.1080/09500839.2016.1154200, 96, 2, 76-83, 2016.02.
71.	Y. Soejima, S. Motomura, M. Mitsuhara, T. Inamura, M. Nishida, In situ scanning electron microscopy study of the thermoelastic martensitic transformation in Ti-Ni shape memory alloy, ACTA MATERIALIA, 10.1016/j.actamat.2015.10.017, 103, 352-360, 2016.01.
72.	岡野倫明, 伊藤孝矩, 光原昌寿, 西田稔, 4種類の異なるラスマルテンサイト界面におけるM23C6炭化物の生成・成長挙動, 日本学術振興会耐熱金属材料第123委員会研究報告, 56, 165-172, 2015.11.
73.	山本圭介, 野口竜太郎, 光原昌寿, 西田稔, 原　徹, 王冬, 中島寛, Electrical and structural properties of group-4 transition-metal nitride (TiN, ZrN, and HfN) contacts on Ge, JOURNAL OF APPLIED PHYSICS, 10.1063/1.4930573, 118, 11, 115701-1-115701-12, 2015.09.
74.	S. Yamasaki, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima, 3D visualization of dislocation arrangement using scanning electron microscope serial sectioning method, SCRIPTA MATERIALIA, 10.1016/j.scriptamat.2015.02.001, 101, 80-83, 2015.05.
75.	Y. Miyajima, S. Komatsu, M. Mitsuhara, S. Hata, Hideharu Nakashima, N. Tsuji, Microstructural change due to isochronal annealing in severely plastic-deformed commercial purity aluminium, PHILOSOPHICAL MAGAZINE, 10.1080/14786435.2015.1021400, 95, 11, 1139-1149, 2015.04.
76.	平田茂, 伊藤孝矩, 光原昌寿, 西田稔, 高マンガンオーステナイトステンレス鋼のクリープ挙動に及ぼす冷間加工とMo添加の影響, 鉄と鋼, 101, 51-58, 2015.01.
77.	M. Matsuda, F. Tanaka, S. Tsurekawa, K. Takashima, M. Mitsuhara, M. Nishida, Novel long-period stacking-ordered structure of martensite in zirconium-cobalt-palladium alloys, PHILOSOPHICAL MAGAZINE LETTERS, 10.1080/09500839.2014.995739, 95, 1, 21-29, 2015.01.
78.	N. Kuwano, Y. Ryu, M. Mitsuhara, C.H. Lin, S. Uchiyama, T. Maruyama, Y. Suzuki, S. Naritsuka, Behavior of defects in a-plane GaN films grown by low-angle-incidence microchannel epitaxy (LAIMCE), Journal of Crystal Growth, Vol.401, 409-413, 2014.07.
79.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, コイルばねクリープ試験法により評価したフェライト系耐熱鋼の低応力クリープ変形, 鉄と鋼, Vol.100, pp.688-695, 2014.05.
80.	Shigeto Yamasaki, Masatoshi Mitsuhara, Ken-ichi Ikeda, Satoshi Hata, Hideharu Nakashima, Low-Stress Creep Deformation in Long-Term Aged Ferritic Heat-Resistant Steel , Materials Transactions, Vol.55, pp.842-849, 2014.05.
81.	平田茂、伊藤孝矩、光原昌寿、西田稔, 冷間圧延した高マンガンオーステナイトステンレス鋼の焼鈍軟化挙動におよぼすMo添加の影響, 鉄と鋼, Vol.100, pp.406-413, 2014.03.
82.	Keisuke Yamamoto, Masatoshi Mitsuhara, Keisuke Hiidome, Ryutaro Noguchi, Minoru Nishida, Dong Wang, and Hiroshi Nakashima, Role of an interlayer at a TiN/Ge contact to alleviate the intrinsic Fermi-level pinning position toward the conduction band edge, Applied Physics Letters, Vol.104, pp.132109-1-4, 2014.03.
83.	M. Matsuda, R. Yamashita, S. Tsurekawa, K. Takashima, M. Mitsuhara, M. Nishida, Antiphase boundary-like structure of B19′ martensite via R-phase transformation in Ti–Ni–Fe alloy, Journal of Alloys and Compounds, Vol.586, pp.87-93, 2014.02.
84.	B. Karbakhsh Ravari, M. Mitsuhara, S. Farjami, M. Nishida , Effect of thermal cycling on multistage martensitic transformation in aged Ti- 50.8 at.% Ni alloy , Materials Transactions, Vol.54, pp.2185-2188, 2013.12.
85.	E. Okunishi, T. Kawai, M. Mitsuhara, S. Farjami, M. Itakura, M. Nishida, HAADF-STEM studies of athermal and isothermal ω-phase in β-Zr alloy, Journal of Alloys and Compounds, Vol.577S, pp.S713-S716, 2013.11.
86.	H. Akamine, S. Farjami, M. Mitsuhara, M. Nishida, T. Fukuda and T. Kakeshita , Electron Microscopy Study of Preferential Variant Selection in CoPt Alloy Ordered under a Magnetic Field, MATERIALS TRANSACTIONS , Vol.54, pp.1715-1718, 2013.08.
87.	三明正樹、赤田晋哉、光原昌寿、西田稔、楠元淳一、金谷章宏, 超高圧電子顕微鏡内その場高温引張観察で捉えた高Crフェライト系耐熱鋼のラス境界”ほどけ”現象, まてりあ, Vol.52, p.207, 2013.05.
88.	光原昌寿、三明正樹、山崎重人、中島英治、西田稔, 高Crフェライト系耐熱鋼のクリープ強度に対するラス境界の役割, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.54, pp.1-6, 2013.03.
89.	Tomonori Tokunaga, Hideo Watanabe, Naoaki Yoshida, Takuya Nagasaka, Ryuta Kasada, Young-Ju Lee, Akihiko Kimura, Masayuki Tokitani, Masatoshi Mitsuhara, Tatsuya Hinoki, Hideharu Nakashima, Suguru Masuzaki, Takeshi Takabatake, Nobuyoshi Kuroki, Koichiro Ezato, Satoshi Suzuki, Masato Akiba, Development of high-grade VPS-tungsten coatings on F82H reduced activation steel, Journal of Nuclear Materials, Vol.442, pp.S287-S291, 2013.01.
90.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, 長時間時効を施した高Crフェライト系耐熱鋼のクリープ変形挙動, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.53, pp.99-109, 2012.07.
91.	R. Miyagawa, S. Yang, H. Miyake, K. Hiramatsu, T. Kuwahara, M. Mitsuhara, N. Kuwano, Microstructure of AlN grown on a nucleation layer on a sapphire substrate, Applied Physics Express, Vol.5, p.025501, 2012.01.
92.	Jung Ho Kim, Sangjun Oh, Yoon-Uk Heo, Satoshi Hata, Hiroaki Kumakura, Akiyoshi Matsumoto, Masatoshi Mitsuhara, Seyong Choi, Yusuke Shimada, Minoru Maeda, Judith L MacManus-Driscoll, Shi Xue Dou, Microscopic role of carbon on MgB2 wire for critical current density comparable to NbTi, NPG Asia Materials, Vol.4, p.e3, 2012.01.
93.	H. Idrissi, S. Turner, M. Mitsuhara, B. Wang, S. Hata , M. Coulombier, JP. Raskin, T. Pardoen, G. Van Tendeloo, D. Schryvers, Point defect clusters and dislocations in FIB irradiated nanocrystalline aluminium films: an electron tomography and aberration-corrected high resolution ADF-STEM study, Microscopy and Microanalysis, Vol.17, pp.983-990, 2011.11.
94.	光原昌寿、原田絵梨香、山崎重人、池田賢一、波多聰、中島英治、大塚智史、皆籐威二, 酸化物分散強化型9Crフェライト系耐熱鋼の3次元組織と高温強度, 可視化情報学会誌, Vol.31, pp.98-103, 2011.07.
95.	S. Hata, H. Miyazaki, S. Miyazaki, M. Mitsuhara, M. Tanaka, K. Kaneko, K. Higashida, K. Ikeda, H. Nakashima, S. Matsumura, J. S. Barnard, J. H. Sharp, P. A. Midgley, High-angle triple-axis specimen holder for three-dimensional diffraction contrast imaging in transmission electron microscopy, Ultramicroscopy, Vol.111, pp.1168-1175, 2011.03.
96.	U. D. Kulkarni, S. Hata, T. Nakano, M. Mitsuhara, K. Ikeda, H. Nakashima, Monte Carlo simulation of antiphase boundaries and growth of antiphase domains in Al5Ti3 phase in Al-rich gamma-TiAl intermetallics, Philosophical Magazine, Vol.91, pp.3068-3078, 2011.02.
97.	U. D. Kulkarni, S. Hata, M. Mitsuhara, K. Ikeda, Ordering transformations in Ni75Mo15Mn10 alloy, Transactions of The Indian Institute of Metals, Vol.63, pp.819-822, 2010.10.
98.	西田稔, 光原昌寿, 波多聰, 板倉賢, 中島英治, 奥西栄治, β型Ti合金に生成する時効ω相の微細構造, 熱処理, Vol.50, pp.531-532, 2010.10.
99.	Y. Miyajima, S. Komatsu, M. Mitsuhara, S. Hata, H, Nakashima, N. Tsuji, Change in electrical resistivity of commercial purity aluminium severely plastic deformed, Philosophical Magazine, Vol.90, pp.4475-4488, 2010.09.
100.	Y. Miyajima, S. Komatsu, M. Mitsuhara, S. Hata, H, Nakashima, N. Tsuji, Quantification of Internal Dislocation Density Using Scanning Transmission Electron Microscopy in Ultrafine Grained Pure Aluminum Fabricated by Severe Plastic Deformation, Materials Science and Engineering A, Vol.528, pp.776-779, 2010.09.
101.	M. Mitsuhara, S. Hata, K. Ikeda, H. Nakashima, M. Tanaka, K. Higashida, Three-dimensional evaluation of dislocation arrangement using electron tomography in austenitic steel, Proceedings of the 31st Ris? International Symposium on Materials Science, pp.353-360, 2010.08.
102.	波多聰、光原昌寿、田中將己、宮崎裕也、池田賢一、金子賢治、中島英治、東田賢二、松村晶, 電子線トモグラフィーによる格子欠陥の3次元可視化, まてりあ, Vol.49, pp.274-279, 2010.06.
103.	田中將己、東田賢二、金子賢治、光原昌寿、波多聰, 電子線トモグラフィーによる転位の三次元可視化技術, 顕微鏡, Vol.45, pp.103-108, 2010.04.
104.	鴛渕孝太、光原昌寿、池田賢一、波多聰、中島英治、大塚智史、皆藤威二、井上賢紀, ODS-9Crフェライト鋼の微細組織と低ひずみ速度クリープ変形挙動, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.51, pp.39-45, 2010.03.
105.	H. Matsuo, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima, Optimal imaging conditions for dislocation tomography using scanning transmission electron microscopy, International Journal of Fatigue, Vol.32, pp.592-598, 2010.01.
106.	S. Sadamatsu, M. Tanaka, K. Higashida, K. Kaneko, M. Mitsuhara, S. Hata, M. Honda, Crack tip dislocations observed by combining scanning trasmission electron microscopy and computed tomography, Advanced Materials Research, Vol.89-91, pp.473-478, 2010.01.
107.	波多聰、光原昌寿、田中將己、宮崎裕也、池田賢一、金子賢治、中島英治、東田賢二、松村晶, 電子線トモグラフィーによる格子欠陥の3次元可視化, まてりあ, Vol.49, 2010.01.
108.	池田賢一、高下拓也、光原昌寿、波多聰、中島英治、山田和広、金子賢治, ScとZrを複合添加したAl-Mg-Si系合金熱間圧延板に形成する析出物の形態, まてりあ, Vol.48, p.611, 2009.12.
109.	光原昌寿、波多聰、池田賢一、中島英治、田中將己、東田賢二, 2種類の回折条件を用いた転位組織の3次元可視化, まてりあ, Vol.48, p.610, 2009.12.
110.	光原昌寿、森岡真也、波多聰、池田賢一、中島英治, 結晶方位に着目したラスマルテンサイトのクリープ劣化挙動, 日本学術振興会耐熱金属材料123委員会研究報告, Vol. 50, pp.37-43, 2009.03.
111.	富田成明、浜島和雄、光原昌寿、池田賢一、波多聰、中島英治, 酸化物分散強化白金合金の高温疲労破壊, 九州大学大学院総合理工学報告, Vol.30, 4, pp.396-401, 2009.03.
112.	Y. Yahiro, M. Mitsuhara, K Tokunaga, N. Yoshida, T. Hirai, K, Ezato, S. Suzuki, M .Akiba, H. Nakashima, Characterization of thick plasma spray tungsten coating on ferritic/martensitic steel F82H for high heat flux armor, Journal of Nuclear Materials, Vol.386-388, pp.784-788, 2009.01.
113.	波多聰，光原昌寿，池田賢一，中島英治，土山聡宏，高木節雄, 走査透過電子顕微鏡による鉄鋼材料の中・低倍率観察の有用性, 金属, Vol.79, pp.33-38, 2009.01.
114.	K. Yamada, M. Mitsuhara, S. Hata, Y. Miyanaga, R. Teranishi, N. Mori, M. Mukaida, K. Kaneko, Three-dimensional observation of microstructures in Y123 films fabricated by TFA-MOD method, Physica C, Vol.469, pp.1446-1449, 2009.01.
115.	波多聰、木村耕輔、光原昌寿、田中將己、宮崎裕也、高紅叶、松山加苗、松村晶、東田賢二、池田賢一、中島英治、森谷智一、土井稔, 電子線トモグラフィーによる結晶材料組織の3次元可視化, ふぇらむ, Vol.13, pp.719-726, 2008.11.
116.	M. Tanaka, M. Honda, M. Mitsuhara, S. Hata, K. Kaneko, K. Higashida, Three-dimensional analyses of crack tip dislocations observed by electron tomography, Korean Journal of Microscopy, Korean Journal of Microscopy, Vol.38 Supplement, pp.221-222, 2008.11.
117.	M. Mitsuhara, M. Tanaka, K. Ikeda, S. Hata, H. Nakashima, Three-dimensional imaging of dislocations in steel using STEM tomography, Korean Journal of Microscopy, Vol.38 Supplement, pp.223-224, 2008.11.
118.	光原昌寿、森岡真也、波多聰、池田賢一、中島英治, フェライト系耐熱鋼の３次元・結晶学組織, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.49, pp.353-361, 2008.11.
119.	T. Isobe, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima, Y. Todaka, M. Umemoto, Electron Microscopy Observation of Pure Copper Deformed by High Pressure Torsion, Proc. International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008), pp.83-84, 2008.11.
120.	光原昌寿、池田賢一、中島英治、早川弘之、楠元淳一、金谷章宏, 18Cr-9Ni-3Cu-Nb-N鋼のクリープ変形に伴う組織変化とそのクリープ破壊への影響, 鉄と鋼, Vol.94, pp.299-304, 2008.08.
121.	M. Tanaka, M. Honda, M. Mitsuhara, S. Hata, K. Kaneko, K. Higashida, Three-dimensional observation of dislocations by electron tomography in a silicon crystal, Materials Transactions, Vol.49, pp.1953-1956, 2008.08.
122.	光原昌寿、池田賢一、波多聰、中島英治、若井隆純, V,Nb添加10Crフェライト系耐熱鋼中の析出物の3次元形態観察, 九州大学超高圧電顕室研究報告, Vol.31, pp.72−73, 2008.08.
123.	M. Tanaka, K. Higashida, K. Kaneko, S. Hata, M. Mitsuhara, Crack tip dislocations revealed by electron tomography in silicon single crystal, Scripta Materialia, Vol.59, pp.901-904, 2008.07.
124.	光原昌寿, 池田賢一, 波多聰, 中島英治, 若井隆純, V添加高強度耐熱鋼におけるラス境界析出物のEDS分析と3次元形態観察, まてりあ, Vol.47, p.301, 2008.06.
125.	光原昌寿、田中將己、波多聰、池田賢一、中島英治, 電子線トモグラフィー法によるSUS316L鋼中の転位の３次元形態観察, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.49, pp.143-150, 2008.06.
126.	光原昌寿、寺田大将、池田賢一、中島英治, 9Crフェライト系耐熱鋼のΩ法解析とクリープ強化機構のΩ値への影響, 鉄と鋼, Vol.94, pp.27-33, 2008.03.
127.	M. Mitsuhara, Y. Yoshida, K. Ikeda, H. Nakashima and T. Wakai, Effects of Addition of V and Nb on Ω in High Cr Ferritic Steels, Materials Science Forum, Vol.561-565, pp.95-98, 2007.11.
128.	光原昌寿, 池田賢一, 波多聰, 中島英治, 若井隆純, 高Crフェライト系耐熱鋼の3次元電子線トモグラフィー観察, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.48, pp.133-137, 2007.10.
129.	光原昌寿、池田賢一、波多聰、中島英治、若井隆純, V添加10Crフェライト鋼におけるラス境界析出物の3D電子線トモグラフィー観察, まてりあ, Vol.46, p.800, 2007.06.
130.	M. Mitsuhara, Y. Yoshida, K. Ikeda, H. Nakashima and T. Wakai, Mechanism of Creep Strengthening in High Cr Ferritic Heat Resistant Steel added V and Nb, Proc. the 1st International Symposium on Steel Science (IS3-2007), pp.227-230, 2007.05.
131.	M. Mitsuhara, Y. Yoshida, K. Ikeda, H. Nakashima and T. Wakai, Effect of Vanadium and Niobium on Creep Strength in 10% Chromium Steel Analyzed by STEM-EDS, Proc. CREEP8, Eighth International Conference on Creep and Fatigue at Elevated Temperatures, CREEP 2007-26746, pp.1-5, 2007.05.
132.	光原昌寿, 池田賢一, 中島英治, 早川弘之, 楠元淳一, 金谷章宏, 0.1C-18Cr-9Ni-3Cu-Nb,N鋼のクリープ変形に伴う組織変化とその破壊機構, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.48, pp.23-27, 2007.03.
133.	光原昌寿, 池田賢一, 中島英治, 早川弘之, 楠元淳一, 金谷章宏, SUS321鋼の動的γ→α相変態挙動とそのクリープ破壊への影響, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.47, pp.155-160, 2006.07.
134.	吉田悠、光原昌寿、池田賢一、中島英治、若井隆純, 高Crフェライト系耐熱鋼のΩ法によるクリープ寿命評価とそのパラメータに及ぼすV・Nb添加量の効果, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.47, pp.109-113, 2006.07.
135.	光原昌寿、寺田大将、池田賢一、吉田冬樹、中島英治、早川弘之, 2.25Cr-1Mo鋼HAZのクリープ変形中における組織変化, 九州大学大学院総合理工学報告, Vol.28, pp.9-15, 2006.06.
136.	M. Mitsuhara, D. Terada and H. Nakashima, Life Assessment of Heat Resistant Steels using the Omega Method, Proc. FAILURES 2006, pp.287-297, 2006.02.
137.	光原昌寿, 池田賢一, 中島英治, 寺地巧, 有岡孝司, SUS316鋼の高温変形に伴う粒界破壊機構, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.46, pp.125-129, 2005.07.
138.	中島英治, 寺田大将, 光原昌寿, W含有先進耐熱鋼の余寿命予測のためのΩ解析, 日本学術振興会耐熱金属材料123委員会研究報告, Vol.45, pp.43-50, 2004.01.
139.	Yuki Uchida, Sho Nakandakari, Kenji Kawahara, Shigeto Yamasaki, Masatoshi Mitsuhara, Hiroki Ago, Controlled Growth of Large-Area Uniform Multilayer Hexagonal Boron Nitride as an Effective 2D Substrate, ACS Nano.

主要総説, 論評, 解説, 書評, 報告書等

全てを見る→

1.	光原昌寿, 結晶性材料の高温強度を理解するための転位組織観察, 2023.01.
2.	光原昌寿, 山﨑重人, 安藤大輔, LPSO型Mg合金のキンク形成観察とキンク導入加工プロセスの最適化, まてりあ, 2022.09.
3.	光原昌寿, 山﨑重人, 中島英治, 高温材料の高強度化に関する現状と課題, ふぇらむ, 2022.09.
4.	波多聰, 趙一方, 井原史朗, 斉藤光, 光原昌寿, 村山光宏, TEM/STEMトモグラフィーによる最近の研究, まてりあ, 2022.02.
5.	光原昌寿, 研究のセレンディピティ、百の思案と一つの文章, ふぇらむ, 2020.02.

主要学会発表等

全てを見る→

1.	光原昌寿, 徳澄翼, 福島碧, 山﨑重人, 中島英治, LPSO型マグネシウム合金のキンク強化に関わる定量解析, 軽金属学会第144回春期大会, 2023.05.
2.	石橋怜輝, 光原昌寿, 早川弘之, 耐熱鋼溶接継手におけるクリープ変形中の局所ひずみ分布　, 日本金属学会2023年春期(第172回)講演大会, 2023.03.
3.	王文苑, 高田尚記, 鈴木飛鳥, 小橋眞, 加藤正樹, 徐一璠, 出口岬, 光原昌寿, 中島英治, Al-Fe-Mn合金積層造形体の高温における組織安定性, 日本金属学会2023年春期(第172回)講演大会, 2023.03.
4.	宮澤健, 丹野敬嗣, 今川裕也, 橋立竜太, 矢野康英, 大塚智史, 皆藤威二, 光原昌寿, 中島英治, 大沼正人, 外山健, 9Cr-ODS鋼高温強度特性へのLMP-Life fraction法の適用性評価, 日本金属学会2023年春期(第172回)講演大会, 2023.03.
5.	永田美豊, 松田光弘, 姫野雄太, 志田賢二, 光原昌寿, 松田元秀, 金属V箔の精密酸化制御によるバナジウム酸化物の開発と微細構造解析, 第64回日本顕微鏡学会九州支部総会・学術講演会, 2022.12.
6.	Tsubasa Tokuzumi, Aoi Fukushima, Masatoshi Mitsuhara, Shigeto Yamasaki, Tomonari Inamura, Toshiyuki Fujii, Hideharu Nakashima, Experimental Verifications of Kink-Band Strengthening in Long-Period Stacking Ordered Mg–Zn–Y Alloy, The 5th International Symposium on Long-Period Stacking/Order Structure and Mille-feuille Structure, 2022.12.
7.	徳澄翼, 福島碧, 山﨑重人, 光原昌寿, 中島英治, 弾性/塑性ひずみ解析によるLPSO単相Mg-Y-Zn合金のキンク強化機構の検討, 軽金属学会第143回秋期講演大会, 2022.11.
8.	光原昌寿, 徳澄翼, 福島碧, 山﨑重人, 中島英治, LPSO型マグネシウム合金で観察されるキンク強化の特殊性, 令和4年度第一回軽金属学会LPSO/MFS構造材料研究部会, 2022.11.
9.	光原昌寿, 石橋怜輝, 早川弘之, 中島英治, デジタル画像相関クリープ試験法による9Crフェライト系耐熱鋼溶接継手の局所ひずみ解析, 日本学術振興会耐熱金属材料第123委員会研究会, 2022.11.
10.	外山健, 柴原理恵, Du Yufeng, 井上耕治, 永井康介, 矢野康英, 大塚智史, 光原昌寿, 中島英治, 大沼正人, 常陽で重照射されたODS鋼中の酸化物粒子の3D-AP観察, 日本金属学会2022年秋期大会, 2022.09.
11.	Y. Du, T. Toyama, K. Inoue, S. Ohtsuka, Y. Yano, K. Yoshida, Y. Shimada, M. Ohnuma, M. Mitsuhara, H. Nakashima, Y. Nagai, Nanocluster evolution of 9Cr ODS Steel after high-dose neutron irradiation in JOYO Reactor, 日本金属学会2022年秋期大会, 2022.09.
12.	光原昌寿, 徳澄翼, 福島碧, 山﨑重人, 中島英治, LPSO単相Mg-Y-Zn合金におけるキンク強化の実験的検証, 日本金属学会2022年秋期大会, 2022.09.
13.	戸髙義一, 足立望, 宮田航英, 島野瑠翔, 光原昌寿, 純Feの組織制御による油潤滑環境下における低摩擦化, 日本鉄鋼協会第184回秋季講演大会, 2022.09.
14.	木之下雄一, 髙橋学, 光原昌寿, 林宏太郎, MnおよびNiを添加した低合金TRIP鋼のミクロ組織的特徴, 日本鉄鋼協会第184回秋季講演大会, 2022.09.
15.	栗野晃一, 光原昌寿, 中島英治, 矢野康英, 大塚智史, 大沼正人, 外山健, クリープ変形したODSフェライト鋼被覆管の転位組織, 日本金属学会2022年秋期大会, 2022.09.
16.	出口岬, 山﨑重人, 光原昌寿, 中島英治, 塚本元気, 國枝知徳, 純チタンの引張変形挙動に及ぼすひずみ速度と結晶粒径の影響, 金属学会 2022年度「高温材料の変形と破壊」研究会（夏の学校）, 2022.09.
17.	秦明弘, 光原昌寿，中島英治, 佐藤雄大，野村恭兵, 9Crフェライト系耐熱鋼溶接金属における時効中の微細組織変化, 金属学会 2022年度「高温材料の変形と破壊」研究会（夏の学校）, 2022.08.
18.	徳澄翼, 福島碧, 山﨑重人, 光原昌寿, 中島英治, 高分解能結晶方位解析と画像相関法に基づくLPSO型Mg合金のキンク強化機構の検討, 金属学会 2022年度「高温材料の変形と破壊」研究会（夏の学校）, 2022.08.
19.	光原昌寿, 金属材料の機械的性質の理解と評価のための走査電子顕微鏡法とその周辺技術, SCAN TECH 2022, 2022.08.
20.	光原昌寿, 中島英治, 画像相関法による局所クリープ変形挙動解析手法の開発, 日本学術振興会耐熱金属材料第123委員会研究会, 2022.07.
21.	Masatoshi Mitsuhara, Hideharu Nakashima, Effect of grain boundary characters on growth of M23C6 carbides in 9Cr ferritic heat-resistant steel, the 7th International Conference on Advanced Steels (ICAS 2022), 2022.05.
22.	出口岬、光原昌寿、中島英治、塚本元気、國枝知徳, α-Tiの室温変形に及ぼすひずみ速度と結晶粒径の影響, 軽金属学会第142回春期大会, 2022.05.
23.	矢野康英、外山健、丹野敬嗣、大塚智史、光原昌寿、中島英治、大沼正人、皆藤威二, 高速実験炉「常陽」で中性子照射した MA957 の微細構造解析評価, 日本金属学会2022年春期大会, 2022.03.
24.	山﨑仁、大沼正人、丹野敬嗣、大塚智史、外山健、光原昌寿、中島英治, 超高温加熱試験によるODS鋼の微細組織変化, 日本金属学会2022年春期大会, 2022.03.
25.	M. Matsuda, K. Arai, S. Kitahara, M. Mitsuhara, Y. Yamabe-Mitarai, M. Nishida, Morphology and Crystallography of Martensite Plate with B33 Orthorhombic Structure in Zr-based Alloy, 16th International Conference on Martensitic Transformation, ICOMAT2022, 2022.03.
26.	光原昌寿, 徳澄翼, 福島碧, 出口岬, 山﨑重人, 中島英治, キンクと回位の精密解析から導かれるキンク強化の考え方, 令和3年度第二回軽金属学会LPSO/MFS構造材料研究部会, 2022.01.
27.	徳澄翼、光原昌寿、山﨑重人、中島英治, 圧縮変形させたLPSO-Mg合金に発現するキンク強化の実験的検証, 軽金属学会第141回秋期大会, 2021.11.
28.	江目皓祐、江草大佑、光原昌寿、中島英治、阿部英司, 室温圧縮LPSO型マグネシウム合金における二次キンク構造の解析, 軽金属学会第141回秋期大会, 2021.11.
29.	赤嶺大志、光原昌寿、西田稔、塚本元気、国枝知徳、藤井秀樹, Ti-Cu合金の2段階時効処理における析出挙動, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
30.	出口岬、山﨑重人、光原昌寿、中島英治、塚本元気、國枝知徳, 純チタンにおける室温変形のひずみ速度依存性, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
31.	宋子碩、出口岬、山﨑重人、光原昌寿、中島英治、眞山剛、河野義樹, 純チタンにおける塑性ひずみの不均一分布, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
32.	河野義樹、眞山剛、光原昌寿、佐藤満弘, CP-Tiに生じる不均一変形機構の数値解析, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
33.	土田真之介、徳納一成、牧江康雄、光原昌寿, 急冷した高純度アルミニウム単結晶の転位チャンネル内におけるセル組織, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
34.	江目皓祐、江草大佑、光原昌寿、中島英治、阿部英司, LPSO型Mg合金の室温圧縮における2次キンクの生成, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
35.	山﨑重人、三池友樹、光原昌寿、中島英治、秋吉竜太郎、中村貴彦、木村申平, デジタル画像相関法とdead-weight型引張試験によるPortevin-Le Chatelier効果の定量解析, 金属学会2021年度秋期(第169回)講演大会, 2021.09.
36.	M. Mitsuhara, T. Tokuzumi, S. Yamasaki, H. Nakashima, K. Hagihara, T. Fujii, Experimental aspects of kink and pre-kink formation process in Mg-Zn-Y alloy with LPSO phase, The 12th International Conference on Magnesium Alloys and their Applications (Mg 2021) , 2021.06.
37.	Tomotaka Miyazawa, Ryota Namba, Toshiyuki Fujii, Shigeto Yamasaki, Masatoshi Mitsuhara, Hideharu Nakashima, Evaluation of residual strain distributions around ridge-type kinks in a single-phase Mg-6at%Zn-9at%Y alloy by synchrotron X-ray radiation, The 12th International Conference on Magnesium Alloys and their Applications (Mg 2021) , 2021.06.
38.	波多聰、趙一方、鯉池卓、仲間陸人、小西夏樹、斉藤光、光原昌寿、村山光宏, STEM連続傾斜像の高速撮影に向けた要素技術開発, 日本顕微鏡学会第77回学術講演会, 2021.06.
39.	小野聡、岡村克己、中島英治、光原昌寿、吉田歩夢, 超硬合金における WC/WC界面密着力評価, 粉体粉末冶金協会20201年度春季大会, 2021.06.
40.	光原昌寿、徳澄翼、山﨑重人、中島英治, LPSO単相Mg-Zn-Y合金のキンク形成とキンク強化に関する実験的検証, 軽金属学会第140回春期大会, 2021.05.
41.	宮澤知孝、難波亮太、藤居俊之、山﨑重人、光原昌寿、中島英治、上椙真之, 放射光X線CTによるLPSO単相合金に形成されたキンクの3次元可視化, 軽金属学会第140回春期大会, 2021.05.
42.	光原昌寿, クリープ損傷に関する教科書的理解, 日本鉄鋼協会　高温材料の高強度化第6回研究会, 2021.04.
43.	光原昌寿、奥村啓太、山﨑重人、中島英治, 加速クリープの学理構築のためのDICクリープ法の開発, 日本鉄鋼協会　高温材料の高強度化第6回研究会, 2021.04.
44.	光原昌寿、徳澄翼、出口岬、山﨑重人、中島英治, 精密結晶方位測定と変形の可視化によるキンク強化理論の検証, キンク研究会/軽金属学会研究部会, 2021.03.
45.	大塚智史、大沼正人、光原昌寿、中島英治、外山健、矢野康英、橋立竜太、皆藤威二, 次世代原子力システム用事故耐性被覆管の照射特性評価技術の開発-全体概要-, 日本金属学会2021年度春期(第168回)講演大会, 2021.03.
46.	山崎仁、大沼正人、大塚智史、丹野敬嗣、外山健、光原昌寿、中島英治, クリープによるODS鋼のナノ組織変化, 日本金属学会2021年度春期(第168回)講演大会, 2021.03.
47.	外山健、柴原理恵、丹野敬嗣、矢野康英、大塚智史、光原昌寿、中島英治、大沼正人, ODS鋼被覆管中の酸化物粒子の３次元アトムプローブ分析, 日本金属学会2021年度春期(第168回)講演大会, 2021.03.
48.	光原昌寿、栗野晃一、中島英治、矢野康英、大塚智史、大沼正人、外山健 , SEMとSTEMによるODS鋼被覆管の微細組織評価, 日本金属学会2021年度春期(第168回)講演大会, 2021.03.
49.	趙一方、鯉池卓、仲間陸人、斉藤光、光原昌寿、村山光宏、波多聰, STEMトモグラフィーによる転位の高速三次元観察, 日本金属学会2021年度春期(第168回)講演大会, 2021.03.
50.	光原昌寿, 高Crフェライト系耐熱鋼の高温強度を理解するための材料組織評価の工夫, 日本鉄鋼協会2021年春季（第181回）講演大会, 2021.03.
51.	山﨑重人、光原昌寿、中島英治, コバルト添加フェライト系耐熱鋼のクリープ強度と磁気特性の関係, 日本鉄鋼協会2021年春季（第181回）講演大会, 2021.03.
52.	工藤啓、河野義樹、眞山剛、光原昌寿、佐藤満弘, (α+β)‐Ti における不均一変形の進行と応力分配の関係の結晶塑性解析, 日本鉄鋼協会2021年春季（第181回）講演大会, 2021.03.
53.	山﨑重人, 徳澄翼, 光原昌寿, 中島英治, 田中將己, 長周期積層構造Mg-Zn-Y合金におけるキンク形成過程, 第62回日本顕微鏡学会九州支部学術講演会, 2020.11.
54.	鯉池卓, 斉藤光, 趙一方, 光原昌寿, 村山光宏, 波多聰, 高速STEMトモグラフィーのための深層学習を用いたノイズ除去, 第62回日本顕微鏡学会九州支部学術講演会, 2020.11.
55.	趙一方, 鯉池卓, 仲間陸人, 光原昌寿, 斉藤光, 村山光宏, 波多聰, STEMトモグラフィーによる転位の高速立体観察, 第62回日本顕微鏡学会九州支部学術講演会, 2020.11.
56.	山田裕太, 松田光弘, 姫野雄太, 志田賢二, 光原昌寿, 西田稔, 松田元秀, 金属Ti箔の酸化を利用したマグネリ相チタン酸化物の作製と微細構造解析, 第62回日本顕微鏡学会九州支部学術講演会, 2020.11.
57.	岡本泰生, 河野義樹, 眞山剛, 光原昌寿, 山﨑重人, 佐藤満弘, α-Ti多結晶体の変形とひずみ速度依存性に関する結晶塑性解析, 日本材料学会　第6回材料WEEK 材料シンポジウム若手学生研究発表会, 2020.10.
58.	光原昌寿, 山﨑重人, 中島英治, 高精度または多機能なクリープ試験法の開発, 日本金属学会2020年秋期（第168回）講演大会, 2020.09.
59.	福岡稜馬, 土田真之介, 徳納一成, 牧江康雄, 光原昌寿, 急冷した高純度アルミニウム単結晶の転位チャネル内におけるもつれ組織, 日本金属学会2020年秋期（第168回）講演大会, 2020.09.
60.	北原慎吾, 松田光弘, 光原昌寿, 西田稔, Zr-Co-Pd合金マルテンサイト相の自己調整組織におよぼす合金組成の影響, 日本金属学会2020年秋期（第168回）講演大会, 2020.09.
61.	松田光弘, 新井晃喜, 光原昌寿, 御手洗容子, 西田稔, Zr-Co-Pd合金B33マルテンサイト相の自己調整構造と形態的特徴, 日本金属学会2020年秋期（第168回）講演大会, 2020.09.
62.	徳澄翼, 李万松, 山﨑重人, 光原昌寿, 中島英治, LPSO-Mg合金中に発生したキンクの三次元形態, 軽金属学会大138回春期大会, 2020.05.
63.	宮澤知孝, 難波亮太, 藤居俊之, 山﨑重人, 光原昌寿, 中島英治, Mg85Zn6Y9単相合金のキンク近傍における残留ひずみ分布の解析, 軽金属学会大138回春期大会, 2020.05.
64.	中島英治, 山﨑重人, 光原昌寿, 窒素含有フェライト系耐熱鋼の高温変形と強度, 日本金属学会2020年春期（第167回）講演大会, 2020.03.
65.	Masatoshi Mitsuhara, Shigeto Yamasaki, Ryoga Arakane, Hideharu Nakashima, Kyohei Nomura, Keiji Kubushiro, Growth behavior of intergranular carbides in martensitic heat-resistant steel, 日本金属学会2020年春期（第167回）講演大会, 2020.03.
66.	M. Mitsuhara, S. Yamasaki, H. Nakashima, K. Hagihara, T. Fujii, Microscopic observation of formation process of kink bands in Mg-Zn-Y alloy with LPSO phase, Mini-symposium: ”Elastic defects and structures. Modeling and experiments”, 2019.12.
67.	光原昌寿, マルテンサイト系耐熱鋼の高温強度に関する金相学的解釈, 日本鉄鋼協会中国四国支部第134回金属物性研究会, 2019.12.
68.	光原昌寿、岩﨑眞澄、山﨑重人、中島英治、西田稔、足立望、戸高義一, 微細流を有する鉄鋼材料の摩擦特性と微細組織, 日本金属学会　材料機能特性のアーキテクチャー研究会第2回研究会, 2019.11.
69.	光原昌寿, Ni基合金における転位のγ'粒子通過機構, 日本鉄鋼協会　高温材料の高強度化第4回研究会, 2019.11.
70.	山﨑重人, 光原昌寿, 中島英治, クリープ試験の改良と応用, 日本鉄鋼協会　高温材料の高強度化第4回研究会, 2019.11.
71.	山﨑重人、徳澄翼、光原昌寿、中島英治、萩原幸司、藤居俊之, LPSO単相多結晶Mg-Zn-Y合金におけるキンク形成過程, 軽金属学会シンポジウム, 2019.11.
72.	出口岬，山﨑重人，光原昌寿, 中島英治, 大田祐太朗, Ti-6Al-4V合金の室温クリープ変形挙動の評価, 軽金属学会第137回秋期講演大会 , 2019.11.
73.	M. Mitsuhara, S. Yamasaki, R. Arakane, R. Takao, H. Nakashima, Growth behavior of M23C6 carbides in high-Cr ferritic heat-resistant steels, EPRI-123 HiMAT International Conference on Advances in High Temperature Materials, 2019.10.
74.	S. Yamasaki, M. Mitsuhara, H. Nakashima, Creep behavior of ferritic heat resistant steel added with nitrogen, EPRI-123 HiMAT International Conference on Advances in High Temperature Materials, 2019.10.
75.	山﨑重人, 三池友樹, 光原昌寿, 中島英治, 秋吉竜太郎, 木村申平, 定負荷速度引張試験で測定したアルミニウム合金のセレーション変形, 高温変形の組織ダイナミクス研究会「2019年度夏の学校」, 2019.09.
76.	光原昌寿、山﨑重人、中島英治、徳澄翼, LPSO単相Mg-Zn-Y合金中に発生したキンクのマクロ形態, MFS夏季研究会, 2019.09.
77.	中島英治、山﨑重人、徳澄翼、光原昌寿, LPSO単相Mg-Zn-Y合金におけるキンク形成挙動解析, MFS夏季研究会, 2019.09.
78.	H. Nakashima, S. Yamasaki, M. Soushima, M. Mitsuhara, K. Hagihara, T. Fujii, Premonitory symptoms of kink deformation in Mg-Zn-Y alloy with LPSO phase, MFS　日露セミナー, 2019.09.
79.	河野義樹、眞山剛、光原昌寿、山﨑重人、佐藤満弘, αTiにおけるすべり系活動への結晶粒間相互作用の影響とその範囲, 日本金属学会2019年秋期（第165回）講演大会, 2019.09.
80.	光原昌寿、山﨑重人、惣島雅樹、中島英治、萩原幸司、藤居俊之, LPSO単相Mg-Zn-Y合金におけるキンク変形の前駆現象, 日本金属学会2019年秋期（第165回）講演大会, 2019.09.
81.	光原昌寿, 高温変形の教科書的理解, 日本鉄鋼協会秋季講演大会　シンポジウム, 2019.09.
82.	山﨑重人, 光原昌寿, 中島英治, フェライト系耐熱鋼の実用ひずみ速度域でのクリープ変形, 日本鉄鋼協会秋季講演大会　シンポジウム, 2019.09.
83.	H. Nakashima, M. Mitsuhara, Materials for the sustainable development, International Conference on Sustainable Innovation, ICoSI 2019, 2019.07.
84.	W. Li, S. Yamasaki, M. Mitsuhara, H. Nakashima, In-situ EBSD characterization of deformation behavior of primary alpha phase in Ti-6Al-4V, The 14th World Conference on Titanium,, 2019.06.
85.	本田隆裕、斉藤光、光原昌寿、波多聰, その場変形転位トモグラフィー観察のための転位線画像抽出の試み, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成31年度合同学術講演会, 2019.06.
86.	藤野翔太, 山﨑重人, 光原昌寿, 中島英治, フェライト系耐熱鋼の磁気変態点変化がクリープ変形に及ぼす影響, 日本金属学会九州支部日本鉄鋼協会九州支部軽金属学会九州支部共催令和元年度合同学術講演大会, 2019.06.
87.	奥村啓太, 山﨑重人, 光原昌寿, 中島英治, デジタル画像相関法による純鉛の局所クリープ変形挙動解析, 日本金属学会九州支部日本鉄鋼協会九州支部軽金属学会九州支部共催令和元年度合同学術講演大会, 2019.06.
88.	三池友樹, 山﨑重人, 光原昌寿, 中島英治, Al-Mg-Si合金とAl-Mg-Zn合金のセレーション挙動, 軽金属学会第136回春期大会, 2019.05.
89.	伊藤孝矩, 山﨑重人, 光原昌寿, 中島英治, 西田稔, 米村光治, 金属間化合物により粒界被覆した多結晶Ni基耐熱合金の微細組織とクリープ特性, 鉄鋼協会, 2019.03.
90.	中島英治、山﨑重人、光原昌寿、惣島雅樹, 長周期積層構造を有するMg基金属間化合物の圧縮変形挙動, 新学術領域「ミルフィーユ構造の材料科学」平成30年度年次報告会, 2019.03.
91.	光原昌寿、山﨑重人、中島英治、惣島雅樹, Mg基LPSO相に生じるキンクの前駆現象, 新学術領域「ミルフィーユ構造の材料科学」平成30年度年次報告会, 2019.03.
92.	須貝和人、寺田大将、山﨑重人、光原昌寿、中島英治、楠井潤、安達充, Al-10Si-0.3Mg合金のレーザー積層造形材における積層位置と力学特性の関係, 軽金属学会, 2018.11.
93.	遊佐昌太郎、寺田大将、山﨑重人、光原昌寿、中島英治、楠井潤、安達充, Mnを添加したAl-Si-Mg合金粉末を用いたレーザー積層造形体の力学特性, 軽金属学会, 2018.11.
94.	寺田大将、高橋亮成、遊佐昌太郎、山﨑重人、光原昌寿、中島英治、楠井潤、安達充, Mn添加Al-Si-系合金粉末のレーザー積層造形体における力学特性のSi濃度依存性, 軽金属学会, 2018.11.
95.	光原昌寿、山﨑重人、波多聰, 中島英治, 金属材料における転位の3次元観察技術, 日本顕微鏡学会第61回シンポジウム, 2018.11.
96.	光原昌寿、山﨑重人、波多聰、中島英治, 金属材料における転位の3次元観察技術, 日本顕微鏡学会第61回シンポジウム「顕微鏡による格子欠陥解析の最前線」, 2018.11.
97.	光原昌寿, 名著に触れて〜「高温強度の材料科学」概論〜, 日本鉄鋼協会　高温材料の高強度化第2回研究会, 2018.10.
98.	光原昌寿, 窒素含有フェライト系耐熱鋼の創製とその特性, 平成30年度日本金属学会/日本鉄鋼協会九州支部秋季講演会／耐熱材料／高温強度の最前線, 2018.10.
99.	荒金遼河・山﨑重人・光原昌寿・中島英治，　澤田浩太・木村一弘, 焼きならし処理のみを施したGr.91鋼における静的時効中のM23C6炭化物成長挙動, 日本鉄鋼協会176回秋季講演大会, 2018.09.
100.	佐々木王城・山﨑重人・光原昌寿・中島英治，澤田浩太，久布白圭司, 高Crフェライト系耐熱鋼溶接熱影響部再現組織への前焼き戻し処理の影響, 日本鉄鋼協会176回秋季講演大会, 2018.09.
101.	中島英治、光原昌寿, 格子回転を伴うキンク変形による特異な組織, 日本金属学会2018年秋期（第163回）講演大会, 2018.09.
102.	岩﨑眞澄・山﨑重人・光原昌寿・中島英治・西田稔，　殿塚一希, 金属表面に形成する潤滑油膜に対する結晶方位と結晶粒径の影響, 日本鉄鋼協会176回秋季講演大会, 2018.09.
103.	當山守人, 中島英治, 光原昌寿, ラスマルテンサイト鋼のクリープ変形挙動に与える転位密度の影響, 日本鉄鋼協会176回秋季講演大会, 2018.09.
104.	光原昌寿、山﨑重人、中島英治, 窒素添加新規フェライト系耐熱鋼の組織とクリープ特性, 日本鉄鋼協会176回秋季講演大会, 2018.09.
105.	光原昌寿, BCC系耐熱鋼における高温強度と組織の考え方, 日本金属学会「鉄鋼メタラジー研究グループ」第2回若手勉強会, 2018.09.
106.	古賀鈴，山﨑重人，光原昌寿，中島英治, 秋吉竜太朗，木村申平, 2元系アルミニウム固溶体合金のセレーション挙動, 高温変形の組織ダイナミクス研究会「平成 30 年度夏の学校」, 2018.09.
107.	山﨑重人, 光原昌寿, 中島英治, フェライト系耐熱鋼のクリープ強度に及ぼす Wと Co 添加の影響, 高温変形の組織ダイナミクス研究会「平成 30 年度夏の学校」, 2018.09.
108.	Masatoshi Mitsuhara, Takanori Ito, Shigeto Yamasaki, Hideharu Nakashima, Minoru Nishida, Mitsuharru Yonemura, Creep deformation and strengthening mechanism in newly developed Ni-20Cr-15Co-1Ti-2Al-8W polycrystalline heat-resistant alloy, 18th International Conference on the Strength of Materials (ICSMA 18), 2018.07.
109.	加藤由輝、山﨑重人、光原昌寿、中島英治, ラスマルテンサイト鋼のクリープ変形挙動に及ぼす転位密度の影響, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成30年度合同学術講演会, 2018.06.
110.	當山守人、山﨑重人、光原昌寿、中島英治, 高ひずみ分解能単軸クリープ試験による極低ひずみ速度変形挙動の評価, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成31年度合同学術講演会, 2018.06.
111.	松田光弘、光原昌寿、西田稔, Zr-Co基およびHf-Co基合金マルテンサイト相における長周期積層構造, 日本顕微鏡学会第74回学術講演会, 2018.05.
112.	光原昌寿、山﨑重人、百武優佑、中島英治, ニッケル基耐熱合金における析出粒子と転位の相互作用, 日本顕微鏡学会第74回学術講演会, 2018.05.
113.	古賀鈴, 山﨑重人, 光原昌寿, 中島英治, 秋吉竜太郎, 徳田健二, 有賀康博, 定負荷速度引張試験により測定した2元系アルミニウム固溶体合金のセレーション挙動, 軽金属学会第134 回春期大会, 2018.05.
114.	古賀鈴, 山﨑重人, 光原昌寿, 中島英治, 秋吉竜太郎, 徳田健二, 有賀康博, 定負荷速度引張試験により測定した2元系アルミニウム固溶体合金のセレーション挙動, 軽金属学会第134 回春期大会, 2018.05.
115.	奥平有, 山﨑重人，光原昌寿，中島英治，西田稔, 楠井潤, 安達充, レーザー積層法により作製した耐熱アルミニウム合金への遷移元素添加, 日本金属学会春期(第162回)講演大会, 2018.03.
116.	奥平有, 山﨑重人，光原昌寿，中島英治，西田稔, 楠井潤, 安達充, 電子ビーム積層法およびレーザー積層法により作製したAC8A合金の高温強度特性, 日本金属学会春期(第162回)講演大会, 2018.03.
117.	寺田大将、遊佐昌太郎、山﨑重人、光原昌寿、中島英治、西田稔、楠井潤、安達充, レーザー積層造形法により作製したAl-Si-Mg-Mn合金の組織と力学特性, 日本金属学会2018年春期（第162回）講演大会, 2018.03.
118.	山本圭介、光原昌寿、王冬、中島寛, 遷移金属窒化物を用いた金属/Geコンタクトの障壁制御, 第65回応用物理学会春季学術講演会　, 2018.03.
119.	山﨑重人, 光原昌寿, 中島英治, 齊藤大蔵, 吉岡洋明, 長時間時効した“Hastelloy X”合金の組織とクリープ変形挙動（第二報）, 平成29年度 3月期耐熱金属材料第123委員会, 2018.03.
120.	吉田歩夢, 本田佳暉, 山﨑重人, 光原昌寿, 中島英治, 後藤裕明, 津田圭一, マイクロシェブロンノッチ曲げ試験法とSEM/FIBトモグラフィーを組み合わせた亀裂進展経路の3次元解析, 第59回日本顕微鏡学会九州支部集会・学術講演会, 2017.12.
121.	山﨑重人、光原昌寿、中島英治、村田純教, 世界情勢と最新研究動向（耐熱鋼）, 日本学術振興会　耐熱金属材料第123委員会, 2017.11.
122.	寺田大将、遊佐昌太郎、山﨑重人、光原昌寿、中島英治、楠井潤、安達充, レーザー積層造形法により作製した高強度Al-Si系造形体の力学特性, 軽金属学会第133回秋期大会, 2017.11.
123.	光原昌寿, 巨大ひずみ加工を施した極低炭素鋼における潤滑油反応膜の電子顕微鏡解析, 日本物理学会　第27回格子欠陥フォーラム, 2017.09.
124.	河野義樹、大橋鉄也、田中將己、奥山彫夢、光原昌寿, Ti-6Al-4V合金中lamellar組織の変形におけるβ相の役割, 日本機械学会北海道支部　第55回講演会, 2017.09.
125.	山﨑重人, 當山守人, 堀翔太郎, 光原昌寿, 中島英治, 窒素添加マルテンサイト耐熱鋼のクリープ変形挙動, 高温変形の組織ダイナミクス研究会「平成29年度夏の学校」, 2017.09.
126.	百武優佑, 山﨑重人, 光原昌寿, 中島英治, 多結晶Ni基耐熱合金のクリープ変形中に生じる転位とγ'析出物の相互作用, 高温変形の組織ダイナミクス研究会「平成29年度夏の学校」, 2017.09.
127.	古賀鈴, 山﨑重人, 光原昌寿, 中島英治, 秋吉竜太郎, 高木康夫徳田健二, 定負荷速度引張試験により測定したAl合金とNi合金のセレーション挙動, 高温変形の組織ダイナミクス研究会「平成29年度夏の学校」, 2017.09.
128.	光原昌寿、伊藤孝矩、山﨑重人、中島英治、西田稔、米村光治, 粒界析出物を有効活用した多結晶 Ni 基耐熱合金のクリープ変形挙動と微細組織, 日本金属学会高温変形の組織ダイナミクス研究会「平成29年度夏の学校」, 2017.09.
129.	H. Nakasima, S. Yamasaki, M. Mitsuhara, Creep strength of new ferritic Fe-N steel for fossil power plant, The 3rd Japan-Russia International Seminar on Advanced Materials, 2017.09.
130.	堀翔太郎, 山﨑重人, 光原昌寿, 中島英治, 木村一弘, Laves相により強化されたフェライト単相耐熱鋼のクリープ変形挙動と微細組織, 日本鉄鋼協会第174 回秋季講演大会, 2017.09.
131.	本田佳暉, 山﨑重人, 光原昌寿, 中島英治, 後藤裕明, 津田圭一, WC-Co 超硬合金の残留応力解析, 日本金属学会秋期(第161回)講演大会, 2017.09.
132.	徳永隼人, 山﨑重人, 光原昌寿, 中島英治, 塚本元気, 國枝知徳, Al 添加α-Ti 合金における双晶界面の高分解能観察, 日本金属学会秋期(第161回)講演大会, 2017.09.
133.	奥平有, 山﨑重人, 光原昌寿, 中島英治, 西田稔, 安達充, 栗田健也, 永田佳彦, 小岩井修二, 金属積層工法を用いたAC8A アルミニウム合金の高温強度特性, 日本金属学会秋期(第161回)講演大会, 2017.09.
134.	河野義樹、大橋鉄也、田中將己、奥山彫夢、光原昌寿, Ti-6Al-4V合金におけるβ相の弾性率の変化と不均一変形の関係の結晶塑性解析, 日本金属学会2017年度秋期(第161回)講演大会, 2017.09.
135.	内田勇気、仲村渠翔、河原憲治、山﨑重人、光原昌寿、吾郷浩樹, 二次元積層デバイス応用に向けた合金触媒による多層h-BNの均一成長, 第78回応用物理学会秋季学術講演会, 2017.09.
136.	S. Yamasaki, M. Mitsuhara and H. Nakashima, Development of new ferritic heat-resistant steel with high nitrogen and tungsten addition, IU-MRS (International union of Materials Research Society) 2017, 2017.08.
137.	Yoshikazu Todaka, Motohiro Horii, Shion Tachibana, Nozomu Adachi, Masatoshi Mitsuhara, Minoru Nishida, Tribological behavior under lubricant in heavy plastic deformed steels with high-density of lattice defects, Frontiers in Materials Processing Applications, Research and Technology, FiMPART'17, 2017.07.
138.	Yoshinori Shiihara, Yoshitaka Umeno, Masatoshi Mitsuhara, Minoru Nishida, Yoshikazu Todaka, Atomic-level interaction between lubricant and SPD-processed metallic surface: first principles, molecular dynamics, and coarse-grained molecular dynamics approaches, Frontiers in Materials Processing Applications, Research and Technology, FiMPART'17, 2017.07.
139.	Mitsuhiro Matsuda, Ryo Matsuoka, Kazuki Takashima, Masatoshi Mitsuhara, Minoru Nishida, Novel long-period stacking-ordered structure of martensite in zirconium and hafnium-based alloys, International Conference on Martensitic Transformations, ICOMAT2017, 2017.07.
140.	山﨑重人, 光原昌寿, 中島英治, 齊藤大蔵, 吉岡洋明, 長時間時効したHastelloy X合金の組織とクリープ変形挙動, 平成29年度 7月期耐熱金属材料第123委員会, 2017.07.
141.	山﨑重人、今村祐輔、光原昌寿、中島英治, 窒素含有マルテンサイト鋼のクリープ変形挙動, 日本金属学会九州支部日本鉄鋼協会九州支部軽金属学会九州支部共催平成29年度合同学術講演大会, 2017.06.
142.	徳永隼人, 山﨑重人, 光原昌寿, 中島英治, 塚本元気, 國枝知徳, チタンの双晶発生に及ぼす固溶元素の影響, 日本金属学会九州支部日本鉄鋼協会九州支部軽金属学会九州支部共催平成29年度合同学術講演大会, 2017.06.
143.	岩﨑眞澄, 山﨑重人, 光原昌寿, 中島英治, 西田稔, 堀井基弘, 戸高義一, HPT加工をした純鉄の摩擦特性と微細組織, 日本金属学会九州支部日本鉄鋼協会九州支部軽金属学会九州支部共催平成29年度合同学術講演大会, 2017.06.
144.	松田光弘、松岡諒、高島和希、光原昌寿、波多聡、西田稔, Hf-Co-Pd合金マルテンサイト相における長周期積層構造, 日本金属学会2017年春期（第160回）講演大会, 2017.03.
145.	草場厚志、光原昌寿、中島英治、安達充、栗田健太、永田佳彦、小岩井修二、寺田大将, レーザ積層造型法で作製した非平衡アルミニウム合金の力学特性, 日本金属学会2017年春期（第160回）講演大会, 2017.03.
146.	中島英治, 結晶性材料の高温における強度と組織変化, 日本金属学会2017年春期（第160回）講演大会, 2017.03.
147.	波多聰、福田大輝、斉藤光、中島英治、嶋田雄介、松本明善, SrTiO3基板上に作製したBi, Pb-2212/Pb-Ca-Cu-O積層膜の微細構造とその熱処理過程, 日本金属学会2017年春期（第160回）講演大会, 2017.03.
148.	山﨑重人、吉川駿一、光原昌寿、中島英治、有賀康博、高木康夫, 定荷重速度試験により測定したAl-Mg合金とAl-Mg-Si合金のセレーション挙動, 日本金属学会2017年春期（第160回）講演大会, 2017.03.
149.	光原昌寿、岩﨑眞澄、中島英治、西田稔、堀井基弘、戸高義一, 巨大ひずみ加工によりナノ組織化した極低炭素鋼における潤滑油との反応膜生成挙動の電子顕微鏡観察, 日本鉄鋼協会第173回春季講演大会, 2017.03.
150.	岩﨑眞澄、光原昌寿、中島英治、西田稔、堀井基弘、戸高義一, HPT 加工した純 Fe に生成する極圧添加剤配合潤滑油との表面反応膜の微細組織解析, 日本鉄鋼協会第173回春季講演大会, 2017.03.
151.	山﨑重人、今村祐輔、光原昌寿、中島英治, 窒素または炭素を添加したフェライト系耐熱鋼のマルテンサイト組織とクリープ変形特性, 日本鉄鋼協会第173回春季講演大会, 2017.03.
152.	内田勇気、仲村渠翔、河原憲治、山﨑重人、光原昌寿、吾郷浩樹, 大面積で均一な多層h-BNのCVD成長とTMDCとのヘテロ構造への展開, 第64回応用物理学会春季学術講演会, 2017.03.
153.	Sho Nakandakari, Kenji Kawahara, Yuki Uchida, Shigeto Yamasaki, Masatoshi Mitsuhara, Hiroki Ago, Growth of large-area and uniform multilayer hexagonal boron nitride as an ideal 2D insulator, The 52nd Fullerenes-Nanotubes-Graphene General Symposium, 2017.03.
154.	光原昌寿、山﨑重人、中島英治, 高窒素化による新規フェライト系耐熱鋼創製の可能性, 鉄鋼協会若手フォーラム, 2017.02.
155.	松岡諒、松田光弘、高島和希、光原昌寿、波多聰、西田稔, Hf-Co-Pd基合金マルテンサイトにおける長周期積層構造相の探索, 第58回日本顕微鏡学会九州支部学術講演会, 2016.12.
156.	光原昌寿、小山元道、平山恭介、田中將己、崇巌、柴田曉伸、戸田裕之、野口博司、大橋徹也、中島英治、辻伸泰、津﨑兼彰, 航空機用鍛造Ti-6Al-4V合金のプロセス、ミクロ組織、疲労・クリープと最弱組織, SIP「革新的構造材料」マテリアルズインテグレーションシンポジウム2016, 2016.11.
157.	光原昌寿、山﨑重人、中島英治, 高窒素化による高強度・高耐酸化性BCC系鉄鋼材料の開発, 九州大学新技術説明会, 2016.10.
158.	山﨑重人、光原昌寿、中島英治, Alloy617における転位のγ'粒子乗り越え機構, 日本金属学会2016年秋期（第159回）講演大会, 2016.09.
159.	草場厚志、光原昌寿、中島英治、安達充、栗田健太、永田佳彦、小岩井修二、寺田大将, 電子ビーム積層造形したAl-10Si-0.3Mg合金の積層中予熱温度と室温強度の関係, 日本金属学会2016年秋期（第159回）講演大会, 2016.09.
160.	幸松波也斗, 山﨑重人, 光原昌寿, 中島英治, Ti-6Al-4V合金の微細組織と高温力学特性に及ぼす溶体化処理後冷却速度の影響, 日本鉄鋼協会第172回秋季講演大会, 2016.09.
161.	河野義樹, 大橋鉄也, 眞山剛, 幸松波也斗, 光原昌寿, 中島英治, EBSD-FEMデータ変換インターフェースの構築Ti-6Al-4V合金の結晶塑性解析への適用, 日本機械学会2016年度　年次大会, 2016.09.
162.	山﨑重人、光原昌寿、中島英治, Alloy617におけるγ'粒子分散状態に応じたクリープ強化機構の変化, 日本金属学会高温変形の組織ダイナミクス研究会「平成28年度夏の学校」, 2016.08.
163.	光原昌寿、山﨑重人、中島英治, 高Crフェライト系耐熱鋼の高温強度と組織ダイナミクス, 日本金属学会高温変形の組織ダイナミクス研究会「平成28年度夏の学校」, 2016.08.
164.	M. Nishida, Y. Soejima, T. Miyoshi, M. Mitsuhara, T. Inamura, Dynamic Visualization of Thermoelastic Martensitic Trans- formation by In-Situ SEM Observation in Various Shape Memory Alloys, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM2016), 2016.08.
165.	T. Miyoshi, Y. Soejima, M. Mitsuhara, M. Nishida, T. Inamura, In-Situ SEM Observation of Nucleation and Growth during Thermoelastic Martensitic Transformation in Various Shape Memory Alloys, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM2016), 2016.08.
166.	S. Komatsu, Y. Soejima, S. Farjami, M. Mitsuhara, M. Nishida, K. Yamauchi, Production of Ti-50.0 at.% Ni Superelastic Wire for IVR Device, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM2016), 2016.08.
167.	M. Mitsuhara, T. Okano, T. Ito, M. Nishida, Coarsening behavior of intergranular M23C6 carbide in high Cr ferritic heat-resistant steel, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM2016), 2016.08.
168.	S. Yamasaki, M. Mitsuhara, S. Hata, H. Nakashima, Three-Dimensional Observation of Dislocation Arrange- ment by Serial Sectioning of SEM-ECCI , 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM2016), 2016.08.
169.	T. Ito, S. Yamasaki, M. Mitsuhara, H. Nakashima, M. Nishida, M. Yonemura, Creep Property and Microstructural Evolution of Grain Boundary Precipitation Strengthening Ni-Based Heat-Resistant Alloy , 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM2016), 2016.08.
170.	山﨑重人、光原昌寿、中島英治, 高窒素添加フェライト系耐熱鋼の高温強度と微細組織, 日本学術振興会耐熱金属材料第123委員会, 2016.07.
171.	草場厚志、光原昌寿、中島英治、池田賢一、萩原幸司, 亜鉛単結晶で発生したキンクバンドの微細構造解析, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成28年度合同学術講演会, 2016.06.
172.	吉川　駿一、羽田佳啓、光原昌寿、波多聰、中島英治、有賀康博、高木康夫, Al-Mg-Si系合金のセレーション現象におよぼす添加元素と室温時効の影響, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成28年度合同学術講演会, 2016.06.
173.	百武優佑、光原昌寿、中島英治、早川弘之, オーステナイト系耐熱鋼SUS321における特異なγ→α相変態, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成28年度合同学術講演会, 2016.06.
174.	堀翔太郎、田中嵩人、光原昌寿、中島英治, 超塑性変形させたZn-Al共析合金の微細組織解析, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成28年度合同学術講演会, 2016.06.
175.	本田佳暉、光原昌寿、中島英治, WC-Co超硬合金の亀裂進展挙動, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成28年度合同学術講演会, 2016.06.
176.	森彩奈、光原昌寿、西田稔、國枝知徳, Ti-Cu合金の時効硬化に及ぼすナノ析出物の影響, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成28年度合同学術講演会, 2016.06.
177.	岡野倫明、伊藤孝矩、光原昌寿、西田稔, 9Crフェライト系耐熱鋼におけるマルテンサイト界面とM23C6粗大化挙動の関係, 日本鉄鋼協会第171回春季講演大会, 2016.03.
178.	堀井基弘、戸高義一、足立望、光原昌寿、粉川良平、森口志穂, 極低炭素鋼のナノ組織化による潤滑油膜形成の変化, 日本鉄鋼協会第171回春季講演大会, 2016.03.
179.	光原昌寿, 岡野倫明, 伊藤孝矩, 西田稔, 高Crフェライト鋼におけるM23C6炭化物の分散状態と強度への寄与に関する一考察, 「高Cr鋼溶接部組織の基礎的理解とその応用」自主フォーラム第7回会合, 2015.11.
180.	光原昌寿, 山﨑重人, 中島英治, 加圧型溶解法による高窒素含有フェライト系耐熱鋼の作製, 日本鉄鋼協会　第170回秋季講演大会, 2015.09.
181.	D. Tyutyunnikov, M. Mitsuhara, P. A. van Aken, C. T. Koch, Two-dimensional misorientation mapping by rocking dark-field transmission electron microscopy, Microscopy Conference 2015, 2015.09.
182.	光原昌寿, 益田智哉, 森彩奈, 西田稔, 國枝知徳, 藤井秀樹, Ti-2.3Cu合金の時効硬化と微細構造変化, 高温変形の組織ダイナミクス研究会「平成27年度夏の学校」, 2015.08.
183.	M. Mitsuhara, S. Akada, S. Yamasaki, H. Nakashima, M. Nishida, Y. Hasegawa, Microstructural evolution of welded joint during creep in high Cr ferritic heat-resistant steel, Advanced High-Temperature Materials Technology for Sustainable and Reliable Power Engineering, 123HiMAT-2015, 2015.07, [URL].
184.	T. Ito, S. Hirata, M. Mitsuhara, M. Nishida, Relationship between recrystalllization behavior and creep property in high Mn austenitic stainless steels with Mo, Advanced High-Temperature Materials Technology for Sustainable and Reliable Power Engineering, 123HiMAT-2015, 2015.07, [URL].
185.	T. Okano, T. Ito, M. Mitsuhara, M. Nishida, Effect of grain boundary character on M23C6 carbide distribution in high Cr herritic heat-resistant steel, Advanced High-Temperature Materials Technology for Sustainable and Reliable Power Engineering, 123HiMAT-2015, 2015.07, [URL].
186.	S. Yamasaki, M. Mitsuhara, S. Hata, H. Nakashima, Change in major creep reinforcer of ferritic heat-resistant steel depending on applied stress, Advanced High-Temperature Materials Technology for Sustainable and Reliable Power Engineering, 123HiMAT-2015, 2015.07, [URL].
187.	M. Mitsuhara, M. Miake, S. Yamasaki, M. Nishida, J. Kusumoto, A. Kanaya, Lath boundary strengthening mechanism in high Cr ferritic heat-resistant steel, 13th International Conference on Creep and Fracture of Engineering Materials and Structures, CREEP2015, 2015.06, [URL].
188.	T. Ito, S. Hirata, M. Mitsuhara, M. Nishida, Effect of Mo addition on recrystallization behavior and creep properties in high Mn austenitic stainless steels, 13th International Conference on Creep and Fracture of Engineering Materials and Structures, CREEP2015, 2015.06, [URL].
189.	S. Yamasaki, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima, Transition of creep mechanism and reinforcing microstructure in grade P92 ferritic heat-resistant steel, 13th International Conference on Creep and Fracture of Engineering Materials and Structures, CREEP2015, 2015.06, [URL].
190.	波田慎太郎、伊藤孝矩、光原昌寿、西田稔、三浦信祐、村田純教, 単結晶Ni基超合金におけるラフト化挙動のFIB/SEMトモグラフィー観察, 日本顕微鏡学会第71回学術講演会, 2015.05, [URL].
191.	山崎重人、光原昌寿、波多聰、中島英治, SEM電子線チャネリングコントラスト法による転位組織の定量評価, 日本顕微鏡学会第71回学術講演会, 2015.05, [URL].
192.	伊藤孝矩、光原昌寿、西田稔、米村光治, 多結晶Ni基合金のクリープ変形に及ぼす粒界析出物の役割, 日本鉄鋼協会　第169回春季講演大会, 2015.03, [URL].
193.	岡野倫明、伊藤孝矩、光原昌寿、西田稔, 高Crフェライト系耐熱鋼におけるM23C6炭化物の生成成長挙動と結晶粒界性格, 日本鉄鋼協会　第169回春季講演大会, 2015.03, [URL].
194.	綱分拓海、山崎重人、光原昌寿、波多聰、中島英治, Ni基合金Alloy617のクリープ変形における局所的な組織変化, 日本鉄鋼協会　第169回春季講演大会, 2015.03, [URL].
195.	光原昌寿、益田智哉、永瀨孝文、西田稔、國枝知徳、藤井秀樹, α＋β型Ti-Fe-O-N合金の長時間時効による微細構造変化, 日本鉄鋼協会　第169回春季講演大会　材料の組織と特性部会「エネルギー関連構造・機能チタン材料」自主フォーラム「チタン合金の相変態・析出研究の新展開」シンポジウム, 2015.03, [URL].
196.	益田智哉、光原昌寿、西田稔、國枝知徳、藤井秀樹, Ti-Cu合金におけるGPゾーンのナノ構造解析, 日本鉄鋼協会　第169回春季講演大会　材料の組織と特性部会「エネルギー関連構造・機能チタン材料」自主フォーラム「チタン合金の相変態・析出研究の新展開」シンポジウム, 2015.03, [URL].
197.	M. Mitsuahra, Nano/microstructure and creep strength in ferritic heat resistant steel, 頭脳循環Workshop, 2015.03, [URL].
198.	N. Kuwano, J. Kaur, R. Akiyoshi, K. Hayashi, Y. Soejima, M. Mitsuhara, S. Suzuki, H. Miyake, K. Hiramatsu, Dependence of microstructures in MOVPE-AlN on annealing temperature of sapphire substrate, International Symposium on Semiconductor Materials and Devices (ISSMD-3), 2015.02, [URL].
199.	光原昌寿, 高Crフェライト系耐熱鋼の強化・弱化機構と微細組織の関係, 第63期第4回材料学会高温強度部門委員会「最近注目される若手の高温材料強度研究」, 2015.01, [URL].
200.	光原昌寿、岡野倫明、伊藤孝矩、山崎重人、中島英治、西田稔, フェライト系耐熱鋼の強化・弱化機構解明に向けた金相学的アプローチ, 日本鉄鋼協会　材料の組織と特性部会　若手フォーラム　平成26年度研究会, 2014.12.
201.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, SEM-EBSD法を用いた多結晶ニッケル基耐熱合金のクリープ損傷定量評価, 第56回日本顕微鏡学会九州支部学術講演会, 2014.12.
202.	三好喬之、副島洋平、光原昌寿、板倉賢、西田稔, 熱弾性マルテンサイトの核生成と組織再現性のSEM内その場観察, 第56回日本顕微鏡学会九州支部学術講演会, 2014.12.
203.	H. Nakashima, M. Mitsuhara, High temperature deformation dynamics in crystalline materials, The 4th International Symposium on Steel Science (ISSS 2014), 2014.11.
204.	益田智哉、光原昌寿、西田稔、國枝知徳、藤井秀樹, 原子分解能STEM観察を用いたTi-Cu合金におけるG.P.ゾーンの生成・成長挙動, 日本鉄鋼協会　第168回秋季講演大会, 2014.09.
205.	光原昌寿、志岐裕喜、波多聰、西田稔, 3次元転位組織解析を利用した固溶体合金の強度評価, 日本鉄鋼協会　第168回秋季講演大会, 2014.09.
206.	副島洋平、吉田秀明、光原昌寿、板倉賢、西田稔, Ti-Ni合金における熱弾性マルテンサイト変態に伴う組織形成の母相粒径依存性, 日本金属学会 2014年秋期講演(第155回)大会, 2014.09.
207.	光原昌寿、波田慎太郎、伊藤孝矩、山崎重人、西田稔, トモグラフィーによる耐熱用合金の3次元構造解析, 日本金属学会 2014年秋期講演(第155回)大会, 2014.09.
208.	野口竜太郎、光原昌寿、山本圭介、原徹、西田稔、中島寛, ZrN, HfN/Geコンタクトの電気特性と界面微細構造解析, 第75回応用物理学会秋季学術講演会, 2014.09.
209.	M. Nishida, Y. Soejima, M. Mitsuhara, T. Inamura, Multiscale characterizations of martensitic transformation in Ti-Ni shape memory alloys, 18th International Microscopy Congress, IMC 2014, 2014.09.
210.	M. Mitsuhara, T. Nagase, T. Masuda, M. Nishida, T. Kunieda, H. Fujii, Microstructural Evolution in Ti-Fe-O-N Alloys During Heating at Intermediate Temperature, 18th International Microscopy Congress, IMC 2014, 2014.09.
211.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, 高 Cr フェライト系耐熱鋼の微細組織変化がクリープ変形挙動に及ぼす影響, 日本金属学会高温強度と組織形成の材料科学研究会「平成 26 年度夏の学校」および超塑性研究会第 155 回研究会, 2014.08.
212.	光原昌寿、三明正樹、山崎重人、西田稔, 高 Cr フェライト系耐熱鋼のクリープ強度とサブグレイン組織, 日本金属学会高温強度と組織形成の材料科学研究会「平成 26 年度夏の学校」および超塑性研究会第 155 回研究会, 2014.08.
213.	伊藤孝矩、平田茂、光原昌寿、西田稔, 冷間加工した Mo 添加高 Mn オーステナイト鋼のクリープ強度と微細組織, 日本金属学会高温強度と組織形成の材料科学研究会「平成 26 年度夏の学校」および超塑性研究会第 155 回研究会, 2014.08.
214.	M. Mitsuhara, K. Fujita, M. Yasunaga, H. Yoshida, M. Nishida, Grain Boundary Control and Grain Refinement of Ti-Ni Based Shape Memory Alloys with Light Plastic Deformation, International Conference on Martensitic Transformations 2014, ICOMAT 2014, 2014.07.
215.	M. Nishida, Y. Soejima, S. Shibuta, S. Farjami, M. Mitsuhara, T. Inamura, Multiscale Visualization of Self-Accommodation Morphology of B19’ Martensite in Ti-Ni Shape Memory Alloy, International Conference on Martensitic Transformations 2014, ICOMAT 2014, 2014.07.
216.	Y. Soejima, S. Farjami, M. Mitsuhara, T. Inamura, M. Nishida, Compositional Dependence of Self-Accommodation Morphology of B19' Martensite in Ti-Ni Shape Memory Alloys, International Conference on Martensitic Transformations 2014, ICOMAT 2014, 2014.07.
217.	山本圭介、光原昌寿、吹留佳祐、野口竜太郎、西田稔、王冬、中島寛, TiN/Geコンタクトにおける低電子障壁発現機構の解明（Ⅱ）, 第61回応用物理学会春季学術講演会, 2014.03.
218.	副島洋平, Sahar Farjami, 光原昌寿,　板倉賢，西田稔 , 稲邑朋也, Ti-Ni合金における逆変態レリーフを用いた自己調整構造内の転位組織観察, 日本金属学会 2014年春期講演(第154回)大会, 2014.03.
219.	伊藤孝矩、光原昌寿、西田稔、平田茂, 冷間圧延した高Mnオーステナイト系ステンレス鋼のクリープ変形中の再結晶挙動とMo添加量の関係, 日本鉄鋼協会第167回春季講演大会, 2014.03.
220.	M. Mitsuhara, An overview of micro/nano-structure and the creep property relationship of high-Cr heat resistant steels, Virginia Tech MSE Seminar, 2014.02.
221.	M. Mitsuhara, M. Miake, S. Yamasaki, S. Hata, H. Nakashima, M. Nishida, J. Kusumoto, A. Kanaya, Interaction between Dislocations and Lath Boundaries during High Temperature Deformation in 9Cr Heat-Resistant Steel, TMS 2014, 143rd Annual Meeting & Exhibition, 2014.02.
222.	副島洋平, 稲邑朋也, Sahar Farjami, 光原昌寿, 板倉賢, 西田稔, Ti-Ni合金における自己調整構造の形成・消滅に伴い導入される転位組織, 第55回日本顕微鏡学会九州支部総会・学術講演会, 2013.12.
223.	吹留佳祐、奥西栄治, Sahar Farjami、光原昌寿、板倉賢、西田稔, HAADF-STEMを用いたβｰTi合金におけるω相の原子像観察, 第55回日本顕微鏡学会九州支部総会・学術講演会, 2013.12.
224.	Masatoshi Mitsuhara, Masaki Miake, Shigeto Yamasaki, Hideharu Nakashima, Ninoru Nishida, Jun-ichi Kusumoto, Akihiro Kanaya, Effect of Lath Boundary on Creep Strengthening in 9Cr Hear-Resistant Steel, The 8th International Conference on Processing & Manufacturing of Advanced Materials (THERMEC’2013), 2013.12.
225.	Sahar Farjami, Yuri Tanaka, Masatoshi Mitsuhara, Masaru Itakura, Minoru Nishida, Takashi Fukuda, Tomoyuki Kakeshita, Microstructure Formation through Disorder-Order Transformation in Ferromagnetic Alloys under Magnetic Field, IUMRS-ICA2013, 2013.12.
226.	副島洋平, 稲邑朋也, 光原昌寿, 西田稔, Ti-Ni合金における熱弾性マルテンサイト変態に伴う組織形成の組成依存性, 日本金属学会 2013年秋期講演(第153回)大会, 2013.09.
227.	藤田浩平、Sahar Farjami、光原昌寿、板倉賢、西田稔, 温間圧延による双晶変形を利用したTi−Ni合金の結晶粒微細化, 日本金属学会 2013年秋期講演(第153回)大会, 2013.09.
228.	吹留佳祐、奥西栄治, Sahar Farjami、光原昌寿、板倉賢、西田稔, HAADF-STEMを用いたβｰTi合金におけるω相の観察, 日本金属学会 2013年秋期講演(第153回)大会, 2013.09.
229.	滝沢里奈, 赤嶺大志, 光原昌寿, 板倉賢, 西田稔, HDDR 処理過程におけるNd-Fe-B 系磁石粉末の結晶方位解析, 日本金属学会 2013年秋期講演(第153回)大会, 2013.09.
230.	松田光弘, 山下諒, 高島和希, 光原昌寿, 西田稔, R 相を経由したTi-Ni-Fe 合金における逆位相境界状組織, 日本金属学会 2013年秋期講演(第153回)大会, 2013.09.
231.	伊藤孝矩、光原昌寿、西田稔、平田茂, 冷間圧延した高Mnオーステナイト系ステンレス鋼のクリープ特性に及ぼすMo添加の影響, 日本鉄鋼協会　第166回秋季講演大会, 2013.09.
232.	三明正樹、光原昌寿、西田稔, 高Crフェライト系耐熱鋼のクリープ強化に及ぼすラス境界と粒界・境界上析出物の影響, 日本鉄鋼協会　第166回秋季講演大会, 2013.09.
233.	H. Akamine, Y. Tanaka, S. Farjami, M. Mitsuhara, M. Itakura, M. Nishida, T. Fukuda, T. Kakeshita, Electron microscopy study of magnetic field-induced cariant selection during disorder-order transformation in CoPt alloy, Intermetallics 2013, 2013.09.
234.	S. Farjami, Y. Tanaka, M. Mitsuhara, M. Itakura, M. Nishida, T. Fukuda, T. Kakeshita, HAADF-STEM studies of L10-type Fe-Pd alloy ordered under magnetic field, Intermetallics 2013, 2013.09.
235.	吹留佳祐、Sahar Farjami、光原昌寿、板倉賢、西田稔、奥西栄治, β-Ti合金におけるω相のHAADF-STEM観察, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成25年度合同学術講演会, 2013.06.
236.	藤田浩平、Sahar Farjami、光原昌寿、板倉賢、西田稔, 温間圧延を利用したTi−Ni合金の結晶粒微細化, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成25年度合同学術講演会, 2013.06.
237.	三明正樹、光原昌寿、西田稔、楠元淳一、金谷章宏, 高Crフェライト系耐熱鋼のラス境界によるクリープ強化機構, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成25年度合同学術講演会, 2013.06.
238.	伊藤孝矩、光原昌寿、板倉賢、西田稔、平田茂, 加工硬化した高Mnオーステナイト系ステンレス鋼の時効に伴う軟化挙動とMo添加量の関係, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成25年度合同学術講演会, 2013.06.
239.	小池幸司, 山崎重人, 光原昌寿, 池田賢一, 波多聰, 中島英治, Ni基合金Alloy617のクリープ破壊形態に及ぼす析出物の影響, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成25年度合同学術講演会, 2013.06.
240.	波多聰, 宮崎裕也, 光原昌寿, 木本浩司, 池田賢一, 中島英治, 高傾斜3軸試料ホルダーの高機能化, 日本顕微鏡学会第69回学術講演会, 2013.05.
241.	Farjami Sahar, 田中裕梨、赤嶺大志、光原昌寿、板倉賢、西田稔、福田隆, 掛下知行, Fe-Pd合金規則相バリアントの磁場下における選択形成, 日本金属学会2013年（第152回）　春期大会, 2013.03.
242.	光原昌寿、永瀬孝文、西田稔、藤井秀樹、國枝知徳, α＋β二相型Ti-Fe-O-N合金の長時間析出挙動, 日本金属学会2013年（第152回）　春期大会, 2013.03.
243.	赤田晋哉、光原昌寿、板倉賢、西田稔、田中勇太、久布白圭司, 多層盛溶接を施した高Crフェライト系耐熱鋼用溶接金属のクリープ変形に伴う組織変化, 日本鉄鋼協会　第165回春季講演大会, 2013.03.
244.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, オーステナイト系耐熱鋼の局所結晶方位解析によるクリープひずみの評価, 日本鉄鋼協会　第165回春季講演大会, 2013.03.
245.	永瀬孝文、光原昌寿、板倉賢、西田稔、藤井秀樹、國枝知徳, 長時間時効したTi-Fe-O-N合金の硬度変化時効析出物の関係, 日本金属学会2013年（第152回）　春期大会, 2013.03.
246.	光原昌寿、赤田晋哉、山崎重人、中島英治、西田稔、長谷川泰士, クリープ変形したフェライト系耐熱鋼溶接継手の組織変化挙動とHAZ軟化に関する一考察, 日本鉄鋼協会　第165回春季講演大会　材料の組織と特性部会　シンポジウム　「高Crフェライト鋼溶接部の組織理解の現状」, 2013.03.
247.	光原昌寿、志岐裕喜、板倉賢、西田稔, 固溶強化合金の強度評価に対する転位トモグラフィーの応用, マテリアル電子線トモグラフィ研究部会講演会, 2013.03.
248.	光原昌寿、三明正樹、山崎重人、中島英治、西田稔, 高Crフェライト系耐熱鋼のクリープ強度に対するラス境界の役割, 日本学術振興会耐熱金属材料第123委員会, 2013.03.
249.	光原昌寿, 高Cr系耐熱鋼溶接継手の組織とクリープ強度に関する一考察, 「耐熱鋼溶接部組織の共通理解のための技術基盤構築」自主フォーラム　第3回会合, 2012.12.
250.	渋田晋作、副島洋平、本村俊一、Sahar Farjami、光原昌寿、板倉賢、西田稔, Ti-Ni合金の熱弾性マルテンサイト変態のその場観察に関する一考察, 第54回日本顕微鏡学会九州支部　総会・学術講演会, 2012.11.
251.	光原昌寿、吹留佳祐、西田稔、山本圭介、中島寛, STEMを利用したTiN/Geコンタクト界面の微細構造解析, 2012年秋季第73回応用物理学会学術講演会, 2012.09.
252.	神山洋一、山崎重人、光原昌寿、池田賢一、波多聰、中島英治、浜口友彰、米村光治, 多結晶Ni基耐熱合金のクリープ特性と損傷組織評価, 高温強度と組織形成の材料科学研究会「平成24年度夏の学校」・超塑性研究会第150回研究会, 2012.09.
253.	光原昌寿、志岐裕喜、板倉賢、西田稔, 3次元転位観察を応用したAl固溶体合金の固溶強化能評価, 高温強度と組織形成の材料科学研究会「平成24年度夏の学校」・超塑性研究会第150回研究会, 2012.09.
254.	Farjami Sahar, Tanaka Yuri, Mitsuhar Masatoshi, Itakura Masaru, Nishida Minoru, Fukuda Takashi, Kakeshita Tomoyuki, VARIANT SELECTION DURING DISORDER-ORDER TRANSFORMATION UNDER A MAGNETIC FIELD IN Fe-Pd ALLOY, European Society of Martensitic Transformation (ESOMAT2012), 2012.09.
255.	光原昌寿、市瀬祐輔、山崎重人、池田賢一、波多聰、中島英治、長谷川泰士, SEM/EBSD法によるクリープ変形に伴うGr.92鋼溶接継手の組織変化挙動解析, 日本鉄鋼協会　第164回秋季講演大会, 2012.09.
256.	赤嶺大志、田中裕梨、Sahar Farjami、光原昌寿、板倉賢、西田稔、福田隆、掛下知行, CoPt合金の不規則ｰ規則変態におけるバリアント選択則と微細組織に与える磁場効果, 日本金属学会　2012年秋期講演大会（第151回）, 2012.09.
257.	副島洋平、本村俊一、Sahar Farjami、光原昌寿、西田稔、稲邑朋也, Ti-Ni合金の熱弾性マルテンサイト変態に伴う組織形成に及ぼす冷却・加熱サイクルの影響, 日本金属学会　2012年秋期講演大会（第151回）, 2012.09.
258.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, 長時間時効を行ったフェライト系耐熱鋼の低応力クリープ変形挙動, 高温強度と組織形成の材料科学研究会「平成24年度夏の学校」・超塑性研究会第150回研究会, 2012.08.
259.	光原昌寿, 微細構造評価によるフェライト系耐熱鋼のクリープ強化・クリープ損傷解析, 日本鉄鋼協会・材料の組織と特性部会若手フォーラム「組織制御に関する産学連携推進フォーラム」　第3回研究会, 2012.07.
260.	赤田晋哉、光原昌寿、Sahar Farjami、板倉賢、西田稔、田中勇太、久布白圭司, 発電プラント蒸気配管用溶接金属の多層盛溶接による微細組織変化, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成24年度合同学術講演会, 2012.06.
261.	伊藤孝矩、光原昌寿、Sahar Farjami、板倉賢、西田稔、平田茂, 高Mnオーステナイト系ステンレス鋼の回復・再結晶におよぼすMo添加の影響, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成24年度合同学術講演会, 2012.06.
262.	副島洋平、本村俊一、Sahar Farjami、光原昌寿、板倉賢、西田稔, Ti-Ni合金における熱弾性マルテンサイト変態のSEMその場冷却・加熱実験, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成24年度合同学術講演会, 2012.06.
263.	Satoshi Hata, Ryutaro Akiyoshi, Keisuke Ogata, Masatoshi Mitsuhara, Ken-ichi Ikeda, Hideharu Nakashima, Syo Matsumura, Minoru Doi, Fitting tomography-based transmission electron microscopy (TEM) to structural material problems: toward effective 3D TEM imaging and analysis, NIMS Conference 2012, Structural Materials Science and Strategy for Sustainability - Back to the Basics -, 2012.06.
264.	Yuri Tanaka, Sahar Farjami, Masatoshi Mitsuhara, Masaru Itakura, Minoru Nishida, Takashi Fukuda, Tomoyuki Kakeshida, TEM studies of disorder-order transformation in Fe45Pd55 alloy under magnetic field, NIMS Conference 2012, Structural Materials Science and Strategy for Sustainability - Back to the Basics -, 2012.06.
265.	Shun-ichi Motomura, Masatoshi Mitsuhara, Masaru Itakura, Minoru Nishida, Noriyuki Kuwano, Detection of local elastic strain in pearlite steel by using a SEM-AsB image, NIMS Conference 2012, Structural Materials Science and Strategy for Sustainability - Back to the Basics -, 2012.06.
266.	S. Yamasaki, M. Mitsuhara, K. Ikeda, S. Hata, H. Nakashima, Creep behavior at ultra-low strain rate in 9% Cr steel studied by helical spring creep test, 12th International Conference on Creep and Fracture of Engineering Materials, CREEP2012, 2012.05.
267.	M. Mitsuhara, E. Harada, K. Ikeda, S. Hata, H. Nakashima, S. Otsuka, T. Kaito, M. Inoue, Evaluation of creep strength based on nano-oxide distribution in ODS-9Cr ferritic steels, 12th International Conference on Creep and Fracture of Engineering Materials, CREEP2012, 2012.05.
268.	松村晶、緒方啓丞、光原昌寿、波多聰、土井稔、池田賢一、中島英治、小隈龍一郎, 電子線トモグラフィーを用いたFe-Al-Ni合金の二段階相分離組織の解析, 日本顕微鏡学会第68回学術講演会, 2012.05.
269.	光原昌寿、志岐裕喜、板倉賢、西田稔, 3次元転位観察を利用したAl固溶体合金の強度評価, 日本顕微鏡学会第68回学術講演会, 2012.05.
270.	副島洋平、本村俊一、光原昌寿、西田稔、板倉賢、桑野範之, SEM内その場冷却・加熱実験によるTi-Ni合金のマルテンサイト生成・消滅挙動解析, 日本顕微鏡学会第68回学術講演会, 2012.05.
271.	本村俊一、光原昌寿、板倉賢、西田稔、桑野範之, SEMチャネリングコントラストを用いた弾性歪み場の直接観察, 日本顕微鏡学会第68回学術講演会, 2012.05.
272.	光原昌寿, 収差補正STEMによる金属材料組織の観察, ナノテク産業化基盤技術の有効利用および高度化と融合を目指した研究会2012, 2012.03.
273.	安永光輝、光原昌寿、西田稔, 低ひずみ加工と相変態を利用したTi-Ni系合金の結晶粒微細化と粒界性格制御, バクルナノメタル年度末報告会, 2012.03.
274.	吹留佳祐、本村俊一、光原昌寿、板倉賢、西田稔、鵜殿治彦, 単相Mn-Si結晶チムニーラダー構造のHAADF-STEM原子像観察, 2012年春季第59回応用物理学関連連合講演会, 2012.03.
275.	副島洋平、本村俊一、Sahar Farjami、光原昌寿、板倉賢、西田稔, Ti-NiB19'マルテンサイトの3次元自己調整構造, 日本金属学会 2012年春期(第150回)大会, 2012.03.
276.	田中裕梨、Sahar Farjami、光原昌寿、板倉賢、西田稔、福田隆、掛下知行, 磁場中で規則化したFe-Pd合金の微細構造観察, 日本金属学会 2012年春期(第150回)大会, 2012.03.
277.	西田稔、副島洋平、本村俊一、Karbakhsh Ravari Banafsh、SaharFarjami、光原昌寿、板倉賢, SEM内その場冷却・加熱によるTi-Ni系合金のマルテンサイト変態の観察, 日本金属学会 2012年春期(第150回)大会, 2012.03.
278.	中島英治、光原昌寿、池田賢一, フェライト系耐熱鋼の高強度化, 日本金属学会 2012年春期(第150回)大会, 2012.03.
279.	安永光輝、Farjami Sahar、光原昌寿、板倉賢、西田稔, Ti-Ni形状記憶合金の3点曲げ試験による結晶粒微細化と粒界性格制御, 日本金属学会 2012年春期(第150回)大会, 2012.03.
280.	光原昌寿, 鉄鋼研究へのTEMトモグラフィーの有用性, 日本鉄鋼協会第163回春季講演大会, 2012.03.
281.	光原昌寿, 組織診断プラットフォームの構築と高精度寿命評価技術, 鉄鋼材料の革新的高強度・高機能化基盤研究開発プロジェクト第2回シンポジウム, 2012.01.
282.	中島英治、光原昌寿, 結晶方位解析に基づくフェライト系耐熱鋼の強度予測, 鉄鋼材料の革新的高強度・高機能化基盤研究開発プロジェクト第2回シンポジウム, 2012.01.
283.	永瀨孝文、河合智也、光原昌寿、板倉賢、西田稔、藤井秀樹, Ti-Fe-O-N系合金における623Kでの時効処理に伴う析出挙動と硬度の相間, 第53回日本顕微鏡学会九州支部学術講演会, 2011.12.
284.	安永光輝、光原昌寿、板倉賢、西田稔, Ti-Ni形状記憶合金の結晶粒微細化におよぼす初期粒径と変形モードの影響, 第53回日本顕微鏡学会九州支部学術講演会, 2011.12.
285.	田中裕梨、S.Farjami、光原昌寿、板倉賢、西田稔、福田隆、掛下知行, Fe-Pd合金における磁場による規則化過程のTEM解析, 第53回日本顕微鏡学会九州支部学術講演会, 2011.12.
286.	波多聰、嶋田雄介、光原昌寿、池田賢一、中島英治、松本明善、J. H. Kim、戸叶一正、熊倉浩明, Mo双結晶の圧縮変形で生じた粒界近傍の転位の３次元観察, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
287.	緒方啓丞、光原昌寿、波多聰、池田賢一、中島英治、松村晶、土井稔, Fe-Ni-Al合金における二段階相分離組織の三次元解析, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
288.	秋吉竜太郎、池田賢一、光原昌寿、波多聰、中島英治、高田健、佐賀誠、潮田浩作、金子賢治、菊池正夫, 時効硬化型Al-Mg-Si系合金の引張変形特性と転位組織, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
289.	三原隆介、羽田野雄一、石川和宏、青木清、光原昌寿、波多聰、板倉賢、西田稔, Nb-TiX共晶型水素透過合金の界面構造, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
290.	志岐裕喜、光原昌寿、板倉賢、西田稔, Al-Cu合金における転位の電子線トモグラフィー観察, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
291.	S.Farjami、田中裕梨、光原昌寿、板倉賢、西田稔、福田隆、掛下知行, Fe-55 at%Pd合金における磁場による規則相バリアントの優先選択組織の形成, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
292.	光原昌寿、河合智也、波多聰、板倉賢、中島英治、西田稔、奥西栄治, β型Zr合金におけるω相の成長挙動と形態変化, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
293.	市瀬祐輔、山崎重人、光原昌寿、池田賢一、波多聰、中島英治、長谷川泰士, 局所方位解析法を用いたフェライト系耐熱鋼溶接熱影響部クリープ弱化要因の特定, 日本金属学会 2011年秋期（第149回）大会, 2011.11.
294.	光原昌寿、波多聰, 金属材料における転位の3次元観察の有用性, 日本金属学会第4回格子欠陥制御工学研究会, 2011.11.
295.	M. Nishida, H. Kawano, E. Okunishi, M. Mitsuhara, T. Inamura, M. Itakura, N. Kuwano, Novel electron microscopy studies of self-accommodation morphology in B19' Ti-Ni martensite, International Conference on Martensitic Transformations, ICOMAT2011, 2011.09.
296.	E. Okunishi, T. Kawai, M. Mitsuhara, T. Hara, M. Nishida, HAADF-STEM studies of athermal and isothermal ω-phases in β-Ti and Zr alloys, International Conference on Martensitic Transformations, ICOMAT2011, 2011.09.
297.	M. Mitsuhara, T. Kawai, S. Hata, M. Itakura, H. Nakashima, M. Nishida, Three-dimensional morphology of ω-phase in β-Ti and Zr alloys, International Conference on Martensitic Transformations, ICOMAT2011, 2011.09.
298.	M. Mitsuhara, H. Kawano, T. Kawai, E. Okunishi, S. Hata, M. Nishida, T. Inamura, Application of novel SEM, TEM and STEM techniques for multi-scale analysis in TiNi and β-Ti alloy, International Conference on Martensitic Transformations, ICOMAT2011, 2011.09.
299.	安永光輝、光原昌寿、池田賢一、西田稔, Ti-Ni合金の結晶粒微細化と粒界制御に及ぼす変形モードと初期粒径の影響, 「バルクナノメタル　常識を覆す新しい構造材料の科学」平成23年度全体研究会, 2011.09.
300.	光原昌寿、波多聰、池田賢一、中島英治、三浦信祐、近藤義宏, Ni基超合金におけるクリープ変形中の転位組織の発達とラフト構造, 高温強度と組織形成の材料科学研究会「平成23年度夏の学校」・超塑性研究会第147回研究会, 2011.08.
301.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治, コイルばねクリープ試験法による極低速クリープ変形挙動, 高温強度と組織形成の材料科学研究会「平成23年度夏の学校」・超塑性研究会第147回研究会, 2011.08.
302.	M. Mitsuhara, S. Hata, K. Ikeda, H. Nakashima, Three-dimensional analysis of dislocations in metals using electron tomography, International Conference on Electron Nanoscopy (EM 50) & XXXII Annual Meeting of EMSI, 2011.07.
303.	S. Hata, H. Miyazaki, S. Miyazaki, M. Mitsuhara, S. Matsumura, K. Kimoto, K. Ikeda, H. Nakashima, High-angle triple-axis specimen holders developed for electron tomography, International Conference on Electron Nanoscopy (EM 51) & XXXII Annual Meeting of EMSI, 2011.07.
304.	新開祐太、光原昌寿、板倉賢、西田稔、中村修一, Fe-Al-Si系合金の硬化挙動におよぼすAl，Si量の影響, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成23年度合同学術講演会, 2011.06.
305.	本村俊一、光原昌寿、板倉賢、西田稔, 最新SEMを用いた急速溶融成長GOI薄膜の結晶性評価, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成24年度合同学術講演会, 2011.06.
306.	永瀨孝文、河合智也、光原昌寿、板倉賢、西田稔、藤井秀樹, α＋β型Ti-Fe-O-N系合金の時効硬化と析出挙動, 日本金属学会九州支部　日本鉄鋼協会九州支部　軽金属学会九州支部　平成25年度合同学術講演会, 2011.06.
307.	光原昌寿、鴛渕孝太、波多聰、池田賢一、中島英治、大塚智史、皆藤威二、井上賢紀, 電子線トモグラフィーによる空間的組織解析と力学特性評価への展開, 日本顕微鏡学会第66回学術講演会, 2010.05.
308.	光原昌寿、車在珉、池田賢一、波多聰、中島英治, ラスマルテンサイトのクリープ変形に伴う動的組織変化, 日本金属学会第146回大会, 2010.03.
309.	光原昌寿、波多聰、池田賢一、中島英治、田中將己、東田賢二, 転位の3D観察-回折コントラストの3次元可視化-, 日本鉄鋼協会粒径・空間・時間分布制御による信頼積向上自主フォーラム, 2009.09.
310.	M. Mitsuhara, S. Hata, K. Ikeda, H. Nakashima, M. Tanaka, K. Higashida, Three-dimensional visualization and quantitative analysis of dislocation microstructure using electron tomography in an austenitic steel, The 12th Frontiers of Electron Microscopy in Materials Science (FEMMS2009), 2009.09.
311.	光原昌寿、森岡真也、池田賢一、波多聰、中島英治, 高Crフェライト鋼のクリープ変形における組織変化とその定量化, 日本金属学会先進材料の高温強度と組織研究会, 2009.08.
312.	光原昌寿、波多聰、池田賢一、中島英治、田中將己、東田賢二, STEM トモグラフィーを用いた鉄鋼材料中の転位組織の定量評価, 日本顕微鏡学会　第65回学術講演会, 2009.05.
313.	光原昌寿, フェライト鋼の組織とクリープ強度, 日本鉄鋼協会　材料の組織と特性部会　第３回「高温材料のフィジカル・メタラジー」研究会, 2009.05.
314.	中島英治、光原昌寿、車在珉、池田賢一、波多聰, 局所方位解析によるフェライト系耐熱鋼の組織劣化診断技術の構築, NEDO「鉄鋼材料の革新的高強度・高機能化基盤研究開発」第１回シンポジウム, 2009.04.
315.	光原昌寿、森岡真也、池田賢一、波多聰、中島英治, ラスマルテンサイトのクリープ変形に伴う結晶学的組織変化, 日本鉄鋼協会第157回春季講演大会, 2009.03.
316.	山崎重人、光原昌寿、池田賢一、波多聰、中島英治、木村光男, コイルばねクリープ試験法による高Cr鋼の低速クリープ挙動評価, 日本金属学会春期第144回大会, 2009.03.
317.	池田賢一、高下拓也、光原昌寿、波多聰、中島英治、山田和広、金子賢二, Sc, Zr複合添加Al-Mg-Si系合金熱間圧延板の析出形態, 日本金属学会春期第144回大会, 2009.03.
318.	M. Mitsuhara, M. Tanaka, S. Hata, K. Ikeda, H. Nakashima, K. Higashida, Optimal condition for STEM tomography of dislocations in metallic materials, Asia-Pacific Congress on Electron Tomography (APCET), 2009.02.

特許出願・取得

特許出願件数 2件

特許登録件数 1件

学会活動

所属学会名

軽金属学会

日本顕微鏡学会

日本材料学会

日本金属学会

日本鉄鋼協会

学協会役員等への就任

2023.04, 日本学術振興会 R054カーボンニュートラルのための耐熱材料委員会, 分科会副主査.

2021.04～2023.04, 日本金属学会, 講演大会委員.

2021.03～2022.02, 日本学術振興会耐熱金属材料第123委員会, 耐熱鋼分科会　主査.

2019.04～2021.04, 日本金属学会, 講演大会委員.

2018.04～2020.03, 日本鉄鋼協会「高温材料の高強度化」研究会, 幹事.

2016.04～2017.03, 軽金属学会九州支部, 幹事.

2016.03～2017.03, 日本金属学会九州支部, 幹事.

2012.07～2021.03, 日本学術振興会耐熱金属材料第123委員会, 幹事.

学会大会・会議・シンポジウム等における役割

2024.11.11～2024.11.14, The 7th International Symposium on Steel Science, ISSS-2024, 企画WG委員, 実行委員.

2022.09.20～2022.09.23, 2022年日本鉄鋼協会秋季・日本金属学会秋期講演大会, 実行委員.

2022.05.29～2022.06.01, International Conference on Advanced Steels, ICAS2022, 国内組織委員（長期損傷）.

2021.11.16～2021.11.19, The 6th International Symposium on Steel Science, ISSS-2020, 企画WG委員, 実行委員.

2019.10.21～2019.10.25, Joint EPRI-123HiMAT International Conference on Advances in High Temperature Materials, Executive Committee, Organization Committee, Chair person.

2019.09.11～2019.09.13, 日本鉄鋼協会第178回秋季講演大会, 座長.

2019.09.11～2019.09.13, 日本金属学会2019年度秋期講演大会, 座長.

2019.03.20～2019.03.22, 日本鉄鋼協会第177回春季講演大会, 座長.

2018.09.19～2018.09.21, 日本鉄鋼協会第176回秋季講演大会, 座長.

2018.06.23～2016.06.23, 日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会, 座長.

2018.05.29～2018.05.31, 第７４回日本顕微鏡学会, 実行委員.

2018.05.29～2018.05.31, 第７４回日本顕微鏡学会, 座長.

2018.05.26～2018.05.27, 軽金属学会第１３４回講演大会, 実行委員.

2017.09.06～2017.09.08, 日本鉄鋼協会2017年度秋季講演大会, 座長.

2017.03.15～2017.03.17, 日本金属学会2017年春期講演大会, 座長.

2016.06.11～2016.06.11, 日本金属学会九州支部・日本鉄鋼協会九州支部・軽金属学会九州支部合同学術講演会, 実行委員.

2016.03.24～2016.03.24, 日本鉄鋼協会第171回春季講演大会, 座長（Chairmanship）.

2015.11.21～2015.11.21, 日本顕微鏡学会第57回九州支部総会・学術講演会, 実行委員.

2015.09.17～2015.09.17, 日本鉄鋼協会第170回秋季講演大会, 運営委員.

2015.09.16～2015.09.18, 日本金属学会第157回秋期講演大会, 実行委員.

2015.09.16～2015.09.18, 日本鉄鋼協会第170回秋季講演大会, 実行委員.

2015.06.29～2015.07.03, Advanced High-Temperature Materials Technology for Sustainable and Reliable Power Engineering, 123HiMAT-2015, 座長（Chairmanship）.

2014.09.24～2014.09.26, 日本金属学会秋期大会（第155回）, 座長（Chairmanship）.

2014.06.07～2014.06.07, 日本金属学会・日本鉄鋼協会・軽金属学会九州支部合同学術講演会, 座長（Chairmanship）.

2012.09.17～2012.09.19, 日本鉄鋼協会　第164回秋季講演大会, 座長（Chairmanship）.

2011.12.03～2011.12.03, 第53回日本顕微鏡学会九州支部学術講演会, 座長（Chairmanship）.

学会誌・雑誌・著書の編集への参加状況

2023.04～2025.03, 日本鉄鋼協会論文誌, 国内, 編集委員.

2021.04～2023.03, 日本鉄鋼協会論文誌, 国内, 編集委員.

2013.04～2015.03, 日本金属学会会報　まてりあ, 国内, 編集委員.

学術論文等の審査

年度	外国語雑誌査読論文数	日本語雑誌査読論文数	国際会議録査読論文数	合計
2023年度	3	1		4
2022年度	11	2		13
2021年度	4	3		7
2020年度	4			4
2019年度	7	2		9
2018年度	9			9
2017年度	9			9
2016年度	4		1	5
2015年度	4			4
2014年度	4			4
2013年度	5	1		6
2012年度			3	3
2011年度	1		3	4

その他の研究活動

海外渡航状況, 海外での教育研究歴

Ulm University, Germany, 2014.09～2014.10.

Virginia Polytechnic Institute and State University, UnitedStatesofAmerica, 2013.11～2014.04.

University of Illinois at Urbana-Champaign, UnitedStatesofAmerica, 2013.06～2013.10.

BARC, Bhabha Atomic Research Center, India, 2011.07～2011.07.

University of Antwerp, Belgium, 2011.03～2011.03.

Technical University of Denmark, Denmark, 2010.09～2010.09.

University of Antwerp, Belgium, 2009.06～2009.07.

受賞

西山記念賞, 日本鉄鋼協会, 2021.03.

発表優秀賞, 新学術領域「ミルフィーユ構造の材料科学」, 2019.09.

俵論文賞, 日本鉄鋼協会, 2019.03.

発表優秀賞, 新学術領域「ミルフィーユ構造の材料科学」, 2019.03.

第66回日本金属学会金属組織写真賞第2部門奨励賞, 日本金属学会, 2016.03.

第63回日本金属学会金属組織写真賞第3部門奨励賞, 日本金属学会, 2013.03.

2011 International Metallographic Contest, Honorable Mention of Class 3, International Metallographic Society and ASM International, 2011.08.

2011 International Metallographic Contest, First Place of Class 4, International Metallographic Society and ASM International, 2011.08.

第1回まてりあ賞「まてりあ論文賞」, 日本金属学会, 2011.11.

第61回日本金属学会金属組織写真賞走査電子顕微鏡部門最優秀賞, 日本金属学会, 2011.03.

第61回日本金属学会金属組織写真賞透過電子顕微鏡部門優秀賞, 日本金属学会, 2011.03.

日本顕微鏡学会　第66回学術講演会　ポスター賞（装置部門）, 日本顕微鏡学会, 2010.05.

2009 International Metallographic Contest, 3rd Place of Class 3, International Metallographic Society and ASM International, 2009.08.

第59回日本金属学会金属組織写真賞 A部門優秀賞, 日本金属学会, 2009.03.

Best Poster Award, 4th International Symposium on Designing, Processing and Properties of Advanced Engineering Materials (ISAEM-2008), 2008.11.

2008 International Metallographic Contest, 1st Place of Class 3, International Metallographic Society and ASM International, 2008.08.

第58回日本金属学会金属組織写真賞 A部門優秀賞, 日本金属学会, 2008.03.

研究資金

科学研究費補助金の採択状況(文部科学省、日本学術振興会)

2023年度～2025年度, 基盤研究(B), 代表, 金属間化合物で強化された新規フェライト単相耐熱鋼の創製.

2022年度～2024年度, 基盤研究(B), 分担, 局所変位を測定可能なクリープ試験法を応用した加速クリープ現象の学理構築.

2020年度～2022年度, 基盤研究(B), 代表, フェライト系耐熱鋼溶接部の局所クリープ特性評価と組織改質による強度低減の抑制.

2019年度～2022年度, 国際共同研究強化(B), 分担, 界面ダイナミクスの評価と制御による革新的機能材料の創製.

2019年度～2021年度, 基盤研究(C), 分担, イメージベース結晶塑性解析を用いたチタン合金のひずみの再分配機構の解明.

2018年度～2020年度, 基盤研究(B), 分担, 高温における亜粒界強化機構の解明.

2017年度～2019年度, 基盤研究(C), 代表, 高Crフェライト系耐熱鋼の粒界上炭化物制御に基づく高強度化合金設計原理の構築.

2014年度～2015年度, 若手研究(B), 代表, フェライト系耐熱鋼における転位強化と析出強化の相乗効果メカニズムの解明.

2012年度～2014年度, 基盤研究(B), 分担, 実次元超顕微解析に基づく異方性ＮｄＦｅＢ系磁石材料の配向組織制御.

2012年度～2013年度, 若手研究(B), 代表, 強化と弱化をもたらすラス組織に着目した高クロム系フェライト系耐熱鋼のクリープ機構.

2011年度～2013年度, 基盤研究(B), 分担, 次世代電子顕微鏡を用いたオメガ変態の実次元マルチスケール解析.

2010年度～2012年度, 基盤研究(B), 分担, 球面収差補正電子顕微鏡用高傾斜3軸試料ホルダーの開発.

2009年度～2010年度, 挑戦的萌芽研究, 分担, 高機能薄膜デバイス開発のための形状記憶アクティブ歪制御基盤の創製.

2009年度～2011年度, 基盤研究(B), 分担, 超顕微法によるNdFeB磁石材料の最適粒界構造の探索と制御.

2008年度～2010年度, 基盤研究(B), 分担, Ti-Ni形状記憶合金における未解明な現象の解析と新機能の創出.

2007年度～2009年度, 基盤研究(B), 分担, 耐熱構造材料の極低ひずみ速度試験法の開発と余寿命評価.

競争的資金(受託研究を含む)の採択状況

2022年度～2031年度, 科学技術試験研究委託事業「極限環境対応構造材料研究拠点」, 分担, 研究課題2(耐疲労表面硬化材:宮本Pro)に関わる析出強化材の変形・疲労による転位組織のTEM解析.

2015年度～2020年度, JST産学共創基礎基盤研究プログラム, 分担, 「鋼材／潤滑油」界面における機能性ヘテロナノ構造制御に基づく転動疲労高特性化のための指導原理の確立.

2015年度～2016年度, 実吉奨学会, 連携, 熱弾性・非熱弾性マルテンサイト変態の理論拡張と新機能特性の可能性.

2015年度～2015年度, 池谷科学技術振興財団（単年度研究助成）, 連携, ナノ組織高温型形状記憶合金の構造解析と高機能化に向けた材料設計.

2007年度～2011年度, 新エネルギー・産業技術総合開発機構(NEDO)/鉄鋼材料の革新的高強度・高機能化基盤研究開発, 分担, フェライト系耐熱鋼の局所方位解析と新組織診断技術データベースの構築.

2011年度～2012年度, 社団法人日本鉄鋼協会　鉄鋼研究振興助成, 代表, 3次元転位組織解析による固溶強化の定量測定.

寄附金の受入状況

2011年度, 新日本製鉄株式会社, 総合理工学研究院研究資金／フェライト系耐熱鋼の高温強度因子分離解析.

九大関連コンテンツ

pure2017年10月2日から、「九州大学研究者情報」を補完するデータベースとして、Elsevier社の「Pure」による研究業績の公開を開始しました。

QIR　九州大学学術情報リポジトリシステム情報科学研究院

総合理工学研究院


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