Study of hydrogen embrittlement of Fe-Ni base alloy by positron annihilation lifetime spectroscopy

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	Study of hydrogen embrittlement of Fe-Ni base alloy by positron annihilation lifetime spectroscopy
	Zhang, J ; Li, XY ; Rong, LJ ; Zheng, YN ; Zhu, SY
通讯作者	Rong, LJ()
	2006-05-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	42 期号:5 页码:469-473
摘要	Positron annihilation lifetime spectroscopy was used to study the occupying rule and action mechanism of hydrogen in a Fe-Ni base precipitation-strengthened austenitic alloy. Tensile tests, SEM and TEM were performed to investigate the influences of heat treatment and hot hydrogen charging on its microstructure and mechanical properties. Results showed that hydrogen charging increased vacancy clusters' concentration in solution treated alloy and improved its strength while slightly decreased its plasticity; in peak aged alloy, hydrogen entered the grain boundaries with a little amount of carbides and inter-grain vacancy clusters rather than gamma'/gamma interface, resulting in an obvious drop of plasticity; overaging treatment made gamma' coarsening and gamma'/gamma interface became hydrogen traps, in addition, hydrogen also entranced the grain boundaries with interconnection carbides. Those two factors led to a dramatic drop of the alloy plasticity.
关键词	Fe-Ni base alloy positron annihilation precipitation-strengthening hydrogen embrittlement
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000237981200005
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/88495
专题	中国科学院金属研究所
通讯作者	Rong, LJ
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.China Inst Atom Energy, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Zhang, J,Li, XY,Rong, LJ,et al. Study of hydrogen embrittlement of Fe-Ni base alloy by positron annihilation lifetime spectroscopy[J]. ACTA METALLURGICA SINICA,2006,42(5):469-473.
APA	Zhang, J,Li, XY,Rong, LJ,Zheng, YN,&Zhu, SY.(2006).Study of hydrogen embrittlement of Fe-Ni base alloy by positron annihilation lifetime spectroscopy.ACTA METALLURGICA SINICA,42(5),469-473.
MLA	Zhang, J,et al."Study of hydrogen embrittlement of Fe-Ni base alloy by positron annihilation lifetime spectroscopy".ACTA METALLURGICA SINICA 42.5(2006):469-473.