Effect of Trace Elements P and Si(Mn) on Hydrogen Embrittlement of JBK-75 Alloy

作     者：WANG, AC LI, YY FAN, CG YANG, K LI, DF SHI, CX 

作者机构：Inst of Metal Research Chinese Acad of Sciences Shenyang China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1995年第11卷第6期

页      面：421-425页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

主　　题：Iron alloys 

摘      要：High purity hot hydrogen charging at high temperature was used to investigate the hydrogen embrittlement (HE) of JBK-75 alloys with different contents of P and Si(Mn). The results indicated that by lowering P content, the size and distribution of gamma precipitate became more homogeneous and the precipitation of stable phase eta was retarded, thus the hydrogen resistant properties of the alloy was obviously improved; however, when Si(Mn) content was lowered together with P, though the size and density of gamma were also homogeneous and no eta phase was observed, formation of some micro twin around grain boundaries was found to be detrimental to the hydrogen performance of the alloy, and hydrogen induced loss of area reduction was very high. Therefore, to improve the hydrogen resistant properties of the alloy, P content should be lowered while certain amount of Si(Mn) should be kept.