摘要
通过TDS(Thermal desorption spectroscopy)方法对比研究了两种15-5PH不锈钢棒材的氢陷阱行为,结合慢应变速率拉伸(SSRT)试验对比两种试验钢的氢脆敏感性。结果表明,电化学充氢后,充入试样的氢均为可扩散氢;晶界和位错为主要的可逆氢陷阱。充氢后缺口试样的抗拉强度均下降明显;充氢后试样的断口形貌由韧性的韧窝型断裂方式转变为脆性的沿晶断裂方式。
Hydrogen trap behavior of two kinds of 15-5PH stainless steel bars was compared by means of TDS(Thermal desorption spectroscopy),and hydrogen embrittlement sensitivity of the two steels was compared by slow strain rate tensile(SSRT)test.The results show that after electrochemical hydrogen charging,the hydrogen charged into the specimens is diffusible,and the tensile strength of notched specimens decreases significantly,the fracture morphology changes from dimple fracture to brittle intercrystalline fracture.
作者
管真
孙永庆
李莉
李强锋
刘振宝
梁剑雄
Guan Zhen;Sun Yongqing;Li Li;Li Qiangfeng;Liu Zhenbao;Liang Jianxiong(Faculty of Material Science and Engineering,Kunming University of Science and Technology,Kunming Yunan 650000,China;Institute of Engineering Steels,Central Iron and Steel Research Institute,Beijing 100081,China;School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2019年第12期226-232,共7页
Heat Treatment of Metals
基金
国家重点研发计划(2016YFB0300104)
关键词
15-5PH不锈钢
氢脆
缺口抗拉强度
15-5PH stainless steel
hydrogen embrittlement
notched tensile strength
