Updated on 2024/09/30

Information

 

写真a

 
SHANG JUAN
 
Organization
International Institute for Carbon-Neutral Energy Research Advanced Energy Materials Thrust Assistant Professor
Title
Assistant Professor

Research History

  • Kyushu University International Institute for Carbon-Neutral Energy Research Advanced Energy Materials Thrust  Assistant Professor

    2023.9 - Present

Papers

  • Synergic effects of temperature and pressure on the hydrogen diffusion and dissolution behaviour of X80 pipeline steel

    Ruizhe Gao, Baihui Xing, Chao Yang, xinyi jiang, JUAN SHANG, Zhengli Hua

    Corrosion Science   2024.11

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    Authorship：Corresponding author  

  • Enhanced hydrogen degradation of two pipeline steels by increasing inert gas pressure in hydrogen-containing mixtures: experimental and theoretical insights

    Juan Shang, Ruizhe Gao, Baihui Xing, Haotian Wei, Zhengli Hua

    Corrosion Science   2024.11

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    Authorship：Lead author  

  • CO2 effect on the fatigue crack growth of X80 pipeline steel in hydrogen-enriched natural gas: Experiment vs DFT

    International Journal of Hydrogen Energy   66   636 - 644   2024.5   （ ISSN:0360-3199 eISSN:1879-3487 ）

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    Authorship：Lead author   Publisher：International Journal of Hydrogen Energy  

    Utilizing the existing natural gas grid presents a promising method for transporting hydrogen on a large scale. However, the effects of natural gas and its impurities on hydrogen-assisted cracking in pipeline steel have not been adequately studied. This study aims to investigate the fatigue performance of X80 pipeline steel in hydrogen-enriched natural gas (HENG) environments and in mixtures containing the impurity CO2. This is achieved through fatigue crack growth rate (FCGR) tests and density functional theory (DFT) calculations. The experimental results show that the FCGR in H2 is slightly faster than that in HENG, whereas it is slower than that in the N2/CO2/H2 mixtures. The enhanced FCGR by CO2 further increases with the increasing CO2 content. DFT computational results indicate that the adsorbed CO2 on the iron surface significantly accelerates the migration of H atoms from surface to subsurface. This promotes the entry of hydrogen into the steel.

    DOI： 10.1016/j.ijhydene.2024.04.116

    Web of Science

    Scopus

  • Co-adsorption of H2+nCO+mO2 on α-Fe (110): Effect on hydrogen adsorption, dissociation and diffusion

    Baihui Xing, Ruizhe Gao, Haotian Wei, Juan Shang, Zhengli Hua

    International Journal of Hydrogen Energy   2024.2

  • Effects of plastic deformation on hydrogen trapping and hydrogen distribution in X80 pipeline steel

    Shang J., Guo J., Hua Z., Xing B., Cui T., Wei H.

    International Journal of Hydrogen Energy   2024   （ ISSN:03603199 ）

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    Publisher：International Journal of Hydrogen Energy  

    The characteristics of hydrogen trapping and hydrogen distribution for the unstrained and strained X80 pipeline steel were investigated in this work. Ultra-high vacuum thermal hydrogen desorption spectroscopy tests were conducted on the hydrogen pre-charged specimens to study the properties of hydrogen trapping under the influence of plasticity. Results showed that the binding energy of the dislocation trap generated by plastic deformation was 28.30∼33.84 kJ/mol, increasing with the increase of strain. As the deformation in the material increased, the number of dislocation traps as well as the hydrogen trapped in the dislocations increased, leading to a higher hydrogen content in the strained specimens. Additionally, finite element simulations were employed to elucidate the properties of hydrogen distribution as affected by plasticity. The binding energy of dislocation trap had a significant effect on the calculated maximum hydrogen concentration in the specimen. Hydrogen trapped at the dislocations during the plastic deformation stage dominated the maximum total hydrogen concentration in X80, which was consistently in the region of greatest strain and increased with the increasing strain and binding energy of hydrogen trapping.

    DOI： 10.1016/j.ijhydene.2023.12.272

    Scopus

  • Enhanced hydrogen embrittlement of steel by the premature hydrogen dissociation with the increasing inert gas pressure in hydrogen-containing mixtures

    Shang, J; Hua, ZL; Xing, BH; Wei, HT; Zheng, JY

    ACTA MATERIALIA   259   2023.10   （ ISSN:1359-6454 eISSN:1873-2453 ）

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    Publisher：Acta Materialia  

    Regarding hydrogen embrittlement (HE) in the mixtures of hydrogen and inert gas, the results were understood mainly based on the partial hydrogen gas pressure. On the other hand, the effect of the total gas pressure has not been fully investigated. In this study, fatigue crack growth rate (FCGR) tests were conducted in high-purity hydrogen gas at different gas pressures. Also, the FCGR tests were conducted in hydrogen and nitrogen mixtures at different total gas pressures. The hydrogen partial pressure in the mixture was the same as the high-purity hydrogen. This was the first time that acceleration of the FCGR in the mixtures compared to that in the high-purity hydrogen was observed. To elucidate the mechanism of the enhanced HE in the mixtures, hydrogen permeation and hydrogen desorption experiments were carried out. Based on the results of these tests, the acceleration of the FCGR in the mixtures could be interpreted by the fast hydrogen entry rate, which may result in a higher local hydrogen concentration near the crack tip during a limited time. Density functional theory (DFT) calculations were performed to consider the total gas pressure effect on an atomic scale. The thrust force of other gas molecules in the mixtures made the hydrogen molecules enter the potential field of the iron surface sooner, advancing the dissociation of the hydrogen. This will increase the surface concentration of the hydrogen atoms.

    DOI： 10.1016/j.actamat.2023.119279

    Web of Science

    Scopus

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