Effects of grain-boundary phases on hydrogen embrittlement of Fe-Ni-Cr austenitic alloys

IMR OpenIR

	Effects of grain-boundary phases on hydrogen embrittlement of Fe-Ni-Cr austenitic alloys
	Zhang Jian; Li Xiuyan; Zhao Mingjiu; Rong Lijian
通讯作者	Rong Lijian(ljrong@imr.ac.cn)
	2008-09-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	44 期号:9 页码:1095-1098
摘要	Dynamic mechanical analyzer was used to investigate the hydrogen embrittlement of two Fe-Ni-Cr austenitic alloys with and without boron. The effects of boron, hydrogen and grain-boundary phases on internal friction of the alloys were analyzed. OM and SEM were used to observe the microstructures and grain-boundary phases. The results showed that abundant Ni3Ti (eta) phases and a few carbides precipitated at grain boundaries in the alloy without boron, while only a few carbides precipitated at grain boundaries in the alloy with 0.008%B. Thermal hydrogen charging caused two new internal friction peaks at about 26 and 36 degrees C in the alloys with and without boron, respectively. And the peaks are resulted from the interaction between hydrogen atoms and the grain boundaries decorated by precipitates. Boron decreased the temperature and activation energy of the hydrogen induced internal friction peak, so it is suggested that the inhibition of the grain-boundary phase precipitation by boron reduces the ability of grain boundary to trap hydrogen atoms. As a result, boron lowered the ductility loss of the alloy.
关键词	internal friction hydrogen embrittlement Fe-Ni-Cr austenitic alloy
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:000259475500013
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：3[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/321006/94757
专题	中国科学院金属研究所
通讯作者	Rong Lijian
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang Jian,Li Xiuyan,Zhao Mingjiu,et al. Effects of grain-boundary phases on hydrogen embrittlement of Fe-Ni-Cr austenitic alloys[J]. ACTA METALLURGICA SINICA,2008,44(9):1095-1098.
APA	Zhang Jian,Li Xiuyan,Zhao Mingjiu,&Rong Lijian.(2008).Effects of grain-boundary phases on hydrogen embrittlement of Fe-Ni-Cr austenitic alloys.ACTA METALLURGICA SINICA,44(9),1095-1098.
MLA	Zhang Jian,et al."Effects of grain-boundary phases on hydrogen embrittlement of Fe-Ni-Cr austenitic alloys".ACTA METALLURGICA SINICA 44.9(2008):1095-1098.