A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen

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	A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen
	Jiang, CB ; Li, H ; Tan, J ; Wu, SD ; Rong, LJ ; Patu, S
通讯作者	Jiang, CB(chbjiang@imr.ac.cn)
	2001-04-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	9 期号:4 页码:355-360
摘要	The effect of hydrogen on the average dislocation velocities in Ni(3)Al single crystals has been investigated by the etch-pit technique. It is found that the velocity is dramatically decreased by the charged high content of hydrogen and that the tension/compression asymmetry of the dislocation velocity is reversed. Detailed observation of the dislocation structure indicates that the motion of edge superkinks is seriously inhibited by hydrogen solutes. These results serve as a strong evidence for the mechanism of hydrogen strengthening in metals. The interaction between the solute H and the edge dislocations also throws a sidelight on the role of kinks in the flow stress anomaly in Ni(3)Al. (C) 2001 Elsevier Science Ltd. All rights reserved.
关键词	nickel aluminides, based on Ni(3)Al hydrogen embrittlement defects : dislocation geometry and arrangement
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000168566700012
出版者	ELSEVIER SCI LTD
引用统计	被引频次：6[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/321006/112742
专题	中国科学院金属研究所
通讯作者	Jiang, CB
作者单位	1.Chinese Acad Sci, Met Res Inst, State Key Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Met Res Inst, State Key Lab Rapidly Solidified Nonequilibrium A, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, CB,Li, H,Tan, J,et al. A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen[J]. INTERMETALLICS,2001,9(4):355-360.
APA	Jiang, CB,Li, H,Tan, J,Wu, SD,Rong, LJ,&Patu, S.(2001).A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen.INTERMETALLICS,9(4),355-360.
MLA	Jiang, CB,et al."A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen".INTERMETALLICS 9.4(2001):355-360.