Kyushu University Academic Staff Educational and Research Activities Database
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TODA HIROYUKI Last modified date:2017.05.26

Graduate School
Undergraduate School

Academic Degree
Doctor of Engineering
Field of Specialization
Strength of Materials, Mechanical Properties of Materials
Outline Activities
I have lead a research group exploring materials strength and characterisation in 3D/4D. My research is in the field of deformation, fracture and fatigue on a wide range of structural/functional materials. A major focus is the exploration of the microstructure and the microstructure-property relations of such materials utilizing synchrotron X-ray microtomography at the third generation facilities, in particular the development of advanced 3D/4D measurements of stress/strain, crack-driving forces, chemical composition and crystallographic information in high density together with their applications to various issues in materials and mechanical engineerings. Recently we have proposed a new concept entitled "Reverse 4D Materials Engineering", in which the complex morphologies of existing materials is taken into account to realize a paradigm shift in materials development for structural/functional materials. We are also in charge of the development of new innovative aerospace materials that is based on a real fracture behavior that has been achiebved by applying the above-mentioned techniques.
Research Interests
  • 3D / 4D mesoscale materials science developed by ultrahigh magnification X-ray microscope
    keyword : Synchrotron radiation, Microtomography, Mechanical properties, Structural materials, Imaging CT, X-ray microscopy
  • Science of fatigue and fracture: Three-dimensional analyses of crack-tip using synchrotron radiation
    keyword : Synchrotron radiation, Microtomography, fatigue fracture, Tracking, Strain, Crack driving force, Mapping, Titanium alloys
  • Optimisation of microstructures in aluminium alloys via hydrogen partitioning control
    keyword : Synchrotron radiation, Microtomography, Mechanical properties, Hydrogen trapping, Hydrogen embrittlement, Pore, Tracking, Strain, Mapping, Aluminum alloys
  • Image-based analyses in 3D/4D and their application to structural materials
    keyword : Synchrotron radiation, Microtomography, Mechanical properties, Structural materials, Tracking, Strain, Chemical concentration, Crack driving force, Mapping, Steels, Aluminum alloys
  • Development of new innovative aerospace materials
    keyword : Synchrotron radiation, Microtomography, Mechanical properties, Structural materials, Hydrogen, Pore, 3D/4D analyses
  • A New Concept Breakthrough in Materials Development: Reverse 4D Materials Engineering
    keyword : Synchrotron radiation, Microtomography, Mechanical properties, Structural materials, Optimization, Coarsening, Image-based simulation
  • Crystallographic deformation behaviors of polycrystalline materials
    keyword : Synchrotron radiation, Microtomography, X-ray difffraction, Polycrystalline materials, Crystallographic orientation, Deformation, Fracture, Damage, Structural materials
Academic Activities
1. 戸田 裕之, Akihide Takijiri, Masafumi Azuma, Shohei Yabu, Kunio Hayashi, SEO DOWON, Masakazu Kobayashi, Kyosuke Hirayama, Akihisa Takeuchi, Kentaro Uesugi, Damage micromechanisms in dual-phase steel investigated with combined phase- and absorption-contrast tomography, ACTA MATERIALIA, 126, 401-412, 2017.03.
2. 戸田 裕之, Takanobu Kamiko, Yasuto Tanabe, Masakazu Kobayashi, D.J. Leclere, Kentaro Uesugi, Akihisa Takeuchi, Kyosuke Hirayama, Diffraction-amalgamated grain boundary tracking for mapping 3D crystallographic orientation and strain fields during plastic deformation, ACTA MATERIALIA, 107, 310-324, 2016.04.
3. H. Li, 戸田 裕之, K. Uesugi, A. Takeuchi, Y. Suzuki, M. Kobayashi, Application of diffraction-amalgamated grain boundary tracking to fatigue crack propagation behavior in high strength aluminum alloy, Materials Transactions, 56, 3, 2015.03.
4. 戸田 裕之, H. Oogo, K. Horikawa, K. Uesugi, A.Takeuchi, Y. Suzuki, M. Nakazawa, Y. Aoki, M. Kobayashi, The true origin of ductile fracture in aluminum alloys, Metallurgical and Materials Transactions A, 45A, 2, 2014.02.
5. C. Gupta, 戸田 裕之, T, Fujioka, M. Kobayashi, K. Uesugi, A. Takeuchi, Y. Suzuki, Micro-pore development phenomenon in hydrogen pre-charged aluminum alloy studied using synchrotron X-ray micro-tomography, Applied Physics Letters, 103, 17, 2013.10.
6. 戸田 裕之, Y. Ohkawa, T. Kamiko, T. Naganuma, K. Uesugi, A. Takeuchi, Y. Suzuki, M. Kobayashi, Grain boundary tracking technique: four-dimensional visualisation technique for determining grain boundary geometry with local strain mapping, Acta Materialia, 61, 14, 2013.08.
7. 戸田 裕之, K. Tsubone, K. Shimizu, K. Uesugi, A. Takeuchi, Y. Suzuki, M. Nakazawa, Y. Aokic, M. Kobayashi, Compression and recovery micro-mechanisms in flexible graphite, Carbon, 59, 2013.08.
8. 戸田 裕之, Z. A. B. Shamsudin, K. Shimizu, K. Uesugi, A.Takeuchi, Y. Suzuki, M. Nakazawa, Y. Aoki, M. Kobayashi, Cavitation during high-temperature deformation in Al-Mg alloys, Acta Materialia, 61, 7, 2013.04.
9. D. Seo, F. Tomizato, 戸田 裕之, K. Uesugi, A. Takeuchi, Y. Suzuki, M. Kobayashi, Spatial resolution of synchrotron x-ray microtomography in high energy range: Effect of x-ray energy and sample-to-detector distance, Applied Physics Letters, 101, 26, 2012.12.
10. 戸田 裕之, S. Masuda, R. Batres, M. Kobayashi, S. Aoyama, M. Onodera, R. Furusawa, K. Uesugi, A. Takeuchi, Y. Suzuki, Statistical assessment of fatigue crack initiation from sub-surface hydrogen micropores in high-quality die-cast aluminum, Acta Materialia, 59, 12, 2011.07.
11. 戸田 裕之, E. Maire, S. Yamauchi, H. Tsuruta, T. Hiramatsu, M. Kobayashi, In situ observation of ductile fracture using X-ray tomography technique, Acta Materialia, 59, 5, 2011.03.
12. 戸田 裕之, T. Yamaguchi, M. Nakawaza, Y. Aoki, K. Uesugi, Y. Suzuki, M. Kobayashi, Four-Dimensional Annihilation Behaviors of Micro Pores during Surface Cold Working, Materials Transactions, 51, 7, 2010.07.
13. 戸田 裕之, T. Nishimura, K. Uesugi, Y. Suzuki, M. Kobayashi, Influence of high-temperature solution treatments on mechanical properties of an Al-Si-Cu aluminum alloy, Acta Materialia, 58, 6, 2010.04.
14. 戸田 裕之, K. Minami, K. Koyama, K. Ichitani, M. Kobayashi, K. Uesugi, Y. Suzuki, Healing behavior of preexisting hydrogen micropores in aluminum alloys during plastic deformation, Acta Materialia, 57, 15, 2009.09.
15. H. Zhang, 戸田 裕之, P.C. Qu, Y. Sakaguchi, M. Kobayashi, K. Uesugi, Y. Suzuki, Three-dimensional fatigue crack growth behavior in an aluminum alloy investigated with in situ high-resolution synchrotron X-ray microtomography, Acta Materialia, 57, 11, 2009.06.
16. 戸田 裕之, T. Hidaka, M. Kobayashi, K. Uesugi, A. Takeuchi, K. Horikawa, Growth behavior of hydrogen micropores in aluminum alloys during high-temperature exposure, Acta Materialia, 57, 7, 2009.04.
17. L. Qian, 戸田 裕之, K. Uesugi, M. Kobayashi, T. Kobayashi, Direct observation and image-based simulation of three-dimensional tortuous crack evolution inside opaque materials, Physical Review Letters, 100, 11, 2008.11.
18. A. Weck, D.S. Wilkinson, E. Maire, 戸田 裕之, Visualization by X-ray tomography of void growth and coalescence leading to fracture in model materials, Acta Materialia, 56, 12, 2008.07.
19. M. Kobayashi, 戸田 裕之, Y. Kawai, T. Ohgaki, K. Uesugi, D.S. Wilkinson, T. Kobayashi, Y. Aoki, M. Nakazawa, High-density three-dimensional mapping of internal strain by tracking microstructural features, Acta Materialia, 56, 10, 2008.06.
20. L. Li, 戸田 裕之, T. Ohgaki, M. Kobayashi, T. Kobayashi, K. Uesugi, Y. Suzuki, Wavelet-based local region-of-interest reconstruction for synchrotron radiation X-ray microtomography, Journal of Applied Physics, 102, 2007.01.
21. 戸田 裕之, K. Uesugi, A. Takeuchi, K. Minami, M. Kobayashi, T. Kobayashi, Three-dimensional observation of nanoscopic precipitates in an aluminum alloy by microtomography with Fresnel zone plate optics, Applied Physics Letters, 89, 14, 2006.10.
22. T. Ohgaki, 戸田 裕之, M. Kobayashi, K. Uesugi, M. Niinomi, T. Akahori, T. Kobayashi, K. Makii, Y. Aruga, In situ observations of compressive behaviour of aluminium foams by local tomography using high-resolution X-rays, Philosophical Magazine A, 86, 28, 2006.10.
23. L. Qian, 戸田 裕之, K. Uesugi, T. Kobayashi, T. Ohgaki, M. Kobayashi, Application of synchrotron x-ray microtomography to investigate ductile fracture in Al alloys, Applied Physics Letters, 87, 24, 2005.12.
24. Y.L. Zhou, M. Niinomi, T. Akahori, H. Fukui, 戸田 裕之, Corrosion resistance and biocompatibility of Ti-Ta alloys for biomedical applications, Materials Science & Engineering. A, 398, 1-2, 2005.05.
25. 戸田 裕之, Jun Katano, T. Kobayashi, T. Akahori, M. Niinomi, Assessment of thermo-mechanical fatigue behaviors of cast Al-Si alloys by experiments and multi-step numerical simulation, Materials Transactions, 46, 1, 2005.01.
26. K.H. Khor, J.-Y. Buffiére, W. Ludwig, 戸田 裕之, H.S. Ubhi, P.J. Gregson, I. Sinclair, In situ high resolution synchrotron x-ray tomography of fatigue crack closure micromechanisms, Journal of Physics: Condensed Matter, 16, 33, 2004.08.
27. 戸田 裕之, I. Sinclair, J.-Y. Buffière, E. Maire, K.H. Khor, P. Gregson, T. Kobayashi, A 3D measurement procedure for internal local crack driving forces via synchrotron X-ray microtomography, Acta Materialia, 52, 5, 2004.03.
28. 戸田 裕之, I. Sinclair, J.-Y. Buffière, E.Maire, T. Connolley, M. Joyce, K.H. Khor, P. Gregson, Assessment of fatigue crack closure phenomenon in damage tolerant aluminium alloy by in-situ high-resolution synchrotron X-ray microtomography, Philosophical Magazine A, 83, 21, 2003.07.
Membership in Academic Society
  • The Japan Institute of Light Metals
  • Japan Foundry Engineering Society
  • The Iron and Steel Institute of Japan
  • The Japan Institute of Metals and Materials
  • The Japan Society of Mechanical Engineers
  • The Society of Materials Science
  • JSPS 176th Committee
  • JSPS 147th Committee
  • SPring-8 users community
  • SPring-8 X-ray Micro/Nano-tomography Research Group
  • Simulation of deformation texture evolution in aluminum alloy based on local strain obtained by synchrotron 3D measurement
  • Fatigue Behavior Analysis of Spheroidal Graphite Cast Iron via High Resolution 4D Imaging
  • The publication prize of the Worshipful Company of Founders for the best paper published in the International Journal of Cast Metals Research (IJCMR) has been awarded to Hiroyuki Toda et al. for their paper entitled, ‘Formation behaviour of blister in cast aluminium alloy' (IJCMR 2014, Vol. 27, p.369).