Anisotropy of high temperature stress rupture property of a Ni base single crystal superalloy

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	Anisotropy of high temperature stress rupture property of a Ni base single crystal superalloy
	Liu, JL; Jin, T; Zhang, JH; Hu, ZQ
刊名	ACTA METALLURGICA SINICA
	2001-12-18
卷号	37 期号:12 页码:1233-1237
关键词	Ni base single crystal superalloy stress rupture property anisotropy
ISSN号	0412-1961
通讯作者	Liu, JL(jlliu@imr.ac.cn)
英文摘要	The stress rupture test was conducted to a Ni base single crystal superalloy along [001],[011] and [111] orientations. The results show that the [001] oriented specimen has the best ductility and the [111] oriented specimen has the longest lifetime ,while the [011] oriented specimen is lower at these two properties. The longest lifetime in [111] orientation is resulting from the formation of dislocation networks due to multislip and its lower resolved shear stress. The [001] orientation specimen displays the best ductility owing to the blunting effect to microcrack stemming from multiple equivalent slip systems. The [011] oriented specimen has lower lifetime and bad ductility because of its higher resolved stress and less slip systems, even the deformation twinning also promotes the initiation of crack. A vine-like gamma' is formed along dendrite direction in all three orientations during test, which is caused by the small misorietation between dendrites and this vine-like gamma' can act as an important crack initiation site.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000173281800001
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/113483]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, JL
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, JL,Jin, T,Zhang, JH,et al. Anisotropy of high temperature stress rupture property of a Ni base single crystal superalloy[J]. ACTA METALLURGICA SINICA,2001,37(12):1233-1237.
APA	Liu, JL,Jin, T,Zhang, JH,&Hu, ZQ.(2001).Anisotropy of high temperature stress rupture property of a Ni base single crystal superalloy.ACTA METALLURGICA SINICA,37(12),1233-1237.
MLA	Liu, JL,et al."Anisotropy of high temperature stress rupture property of a Ni base single crystal superalloy".ACTA METALLURGICA SINICA 37.12(2001):1233-1237.