氢脆
材料科学
氢
冶金
奥氏体
环境应力断裂
脆化
晶间断裂
晶间腐蚀
锰
极限抗拉强度
拉伸试验
复合材料
腐蚀
微观结构
化学
有机化学
作者
Sang In Lee,Ji Min Lee,Seung Yong Lee,Han Jin Kim,Jin‐Yoo Suh,Jae Hyeok Shim,Un Bong Baek,Seung Hoon Nahm,Joonho Lee,Byoungchul Hwang
标识
DOI:10.1016/j.msea.2019.138367
摘要
The hydrogen-embrittlement susceptibility of austenitic high-manganese steels according to different hydrogen-charging test methods was discussed in terms of hydrogen-embrittlement process and fracture mechanism. Ex-situ electrochemical and high-pressure thermal hydrogen-charging methods exhibited a difference in hydrogen-embrittlement susceptibility because they affect the permeability and diffusivity of hydrogen. Moreover, the in-situ high-pressure gaseous hydrogen-charging method showed the most apparent hydrogen-embrittlement susceptibility because higher triaxial stress in the necked region caused by plastic instability accelerates hydrogen charging in the specimen during tensile testing in hydrogen environment, thus leading to intergranular fracture in all regions.
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