Diffusion of hydrogen along the grain boundaries in Ni3Al alloys

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	Diffusion of hydrogen along the grain boundaries in Ni3Al alloys
	X. Y. Cheng; X. J. Wan; Q. Y. Wu; X. K. Sun
	2001
发表期刊	International Journal of Materials & Product Technology
ISSN	0268-1900
页码	841-846
摘要	The diffusivity of hydrogen in two Nl(3)Al alloys has been measured in the temperature range 100degreesC to 420degreesC using an ultrahigh vacuum gaseous permeation technique. The diffusivity data fall into two segments, in which the hydrogen diffusivity adheres to the Arrhenius form, respectively. It is suggested that hydrogen transportation takes place along the grain boundaries at lower temperature and in the lattice at higher temperature. The intergranular fracture of L1(2)-type intermetallics induced by hydrogen at relatively low temperature results from hydrogen transportation along the grain boundaries, not in the lattice.
部门归属	shanghai univ, inst mat res, shanghai 200072, peoples r china. chinese acad sci, inst met res, state key lab rsa, shenyang 110015, peoples r china.
关键词	Hydrogen Diffusivity N1(3)A1 Alloys Ultrahigh Vacuum Gaseous Permeation Technique Environmental Embrittlement Nickel Transport
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WOS记录号	WOS:000174604900067
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36616
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Y. Cheng,X. J. Wan,Q. Y. Wu,et al. Diffusion of hydrogen along the grain boundaries in Ni3Al alloys[J]. International Journal of Materials & Product Technology,2001:841-846.
APA	X. Y. Cheng,X. J. Wan,Q. Y. Wu,&X. K. Sun.(2001).Diffusion of hydrogen along the grain boundaries in Ni3Al alloys.International Journal of Materials & Product Technology,841-846.
MLA	X. Y. Cheng,et al."Diffusion of hydrogen along the grain boundaries in Ni3Al alloys".International Journal of Materials & Product Technology (2001):841-846.