Effect of Mo doping on the gaseous hydrogen embrittlement of a CoCrNi medium-entropy alloy

被引：37
|
作者：
Yi, Jiang [1 ]
Zhuang, Xiaoqiang [2 ]
He, Jing [1 ]
He, Minglin [1 ]
Liu, Weihong [2 ]
Wang, Shuai [1 ]
机构：
[1] Southern Univ Sci & Technol, Dept Mech & Energy Engn, 1088 Xueyuan Ave, Shenzhen 518055, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 189卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Hydrogen embrittlement; Medium-entropy alloy; Microstructure; Deformation; CoCrNi; GRAIN; DEFORMATION; MICROSTRUCTURE; INTERFACES; BOUNDARIES; TRANSPORT; EVOLUTION; STRESS;
D O I：
10.1016/j.corsci.2021.109628
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By using slow-strain-rate tensile test and post-mortem characterization of microstructure and fractography, we found that Mo-doping can simultaneously improve the strength and hydrogen resistance of an equi-molar CoCrNi medium-entropy alloy. At a high hydrogen concentration of 55.51 mass ppm, CoCrNi exhibited brittle intergranular fracture. By contrast, (CoCrNi)97Mo3 possessed a mixed fracture morphology with lots of dimples and a small portion of intergranular feature. We attributed the enhanced hydrogen resistance to the Mo-promoted twinning-dominated deformation process, which can suppress the redistribution of hydrogen concentration by dislocation motion, and thus inhibit the hydrogen-induced grain boundary decohesion.
引用
收藏
页数：9
相关论文
共 50 条
  • [31] Effect of Temperature on the Corrosion Behavior of CoCrNi Medium-Entropy Alloy in NH4Cl Solution
    B. Zhang
    M. Zhu
    S. M. Yin
    Y. F. Yuan
    S. Y. Guo
    Journal of Materials Engineering and Performance, 2024, 33 : 3050 - 3064
  • [32] Superb strength-ductility synergy in a medium-entropy CoCrNi alloy via reinforced TRIP effect
    Shi, C. X.
    Du, X. H.
    Zhang, J. Y.
    Duan, G. S.
    Yang, M. C.
    Zu, R. F.
    Li, W. P.
    Chou, T. H.
    Wu, B. L.
    Sun, J.
    Huang, J. C.
    JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2022, 20 : 104 - 113
  • [33] Effect of Composition Change of Ammonium Sulfide Mother Liquor on Corrosion Resistance of CoCrNi Medium-Entropy Alloy
    Ni, Q. H.
    Zhang, B.
    Zhu, M.
    Yuan, Y. F.
    Guo, S. Y.
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2024,
  • [34] Study on AC Corrosion Behavior of CoCrNi Medium-Entropy Alloy in 3.5% NaCl Solution
    F. He
    M. Zhu
    Y. F. Yuan
    S. Y. Guo
    G. T. Zhu
    Journal of Materials Engineering and Performance, 2023, 32 : 2918 - 2931
  • [35] Property enhancement of CoCrNi medium-entropy alloy by introducing nano-scale features
    Li, Mingyang
    Guo, Yuanhang
    Li, Wuming
    Zhang, Yanwen
    Chang, Yongqin
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2021, 817
  • [36] Microstructure and properties of the welding heat-affected zone in CoCrNi medium-entropy alloy
    Liu, Xinzhe
    Zhou, Yong
    Dong, Hui
    Sun, Liang
    Gao, Yang
    Zhang, Pengju
    JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2024, 33 : 6867 - 6875
  • [37] Study on Corrosion Behavior of CoCrNi Medium-Entropy Alloy in Acidified Coastal Seawater Environment
    F. He
    M. Zhu
    Y. F. Yuan
    S. Y. Guo
    Journal of Materials Engineering and Performance, 2024, 33 : 1179 - 1193
  • [38] Effects of Nb additions on structure and mechanical properties evolution of CoCrNi medium-entropy alloy
    Lu, Wenjie
    Luo, Xian
    Yang, Yanqing
    Huang, Bin
    MATERIALS EXPRESS, 2019, 9 (04) : 291 - 298
  • [39] Influence of Si Addition on the Microstructures, Phase Assemblages and Properties in CoCrNi Medium-Entropy Alloy
    Chang, Hui
    Wang, Shengfang
    Mao, Zhouzhu
    Zhang, Tuanwei
    Li, Zhiqiang
    Wang, Zhihua
    MATERIALS, 2024, 17 (12)
  • [40] Study on AC Corrosion Behavior of CoCrNi Medium-Entropy Alloy in 3.5% NaCl Solution
    He, F.
    Zhu, M.
    Yuan, Y. F.
    Guo, S. Y.
    Zhu, G. T.
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2023, 32 (07) : 2918 - 2931
12345