Anisotropy of stress rupture properties of a Ni base single crystal superalloy at two temperatures

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	Anisotropy of stress rupture properties of a Ni base single crystal superalloy at two temperatures
	J. L. Liu; T. Jin; X. F. Sun; J. H. Zhang; H. R. Guan; Z. Q. Hu
	2008
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	479 期号:1-2 页码:277-284
摘要	The stress rupture properties of a single crystal superalloy in three orientations were tested under 871 degrees C/552MPa and 1010 degrees C/248MPa. The [0 0 1] orientation shows the longest life and good elongation at 871 degrees C, the [111] orientation exhibits the best elongation, while the life and elongation of [0 11] orientation are both poor at this test condition. At 10 10 degrees C, the anisotropy between [001] and [011] orientation is evidently reduced, however the [111] orientation shows the longest life at the same condition. In [0 0 1] orientation, the N type rafts are formed under two test conditions. In [111] orientation, the gamma' keep cuboidal shape under 871 degrees C/552 MPa, while rafts with direction varying with local position are formed under 10 10 degrees C/248 MPa. In [011] orientation, lots of stacking faults appears in gamma' under 871 degrees C/55 2 MPa, while many twins are formed under 1010 degrees C/248 MPa, which are both related to the activation of {111} (112) slip system. The influence of orientation and test condition on the deformation mechanisms and stress rupture properties is discussed. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	[liu, j. l.; jin, t.; sun, x. f.; zhang, j. h.; guan, h. r.; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;liu, jl (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jlliu@imr.ac.cn
关键词	Single Crystal Superalloy Stress Rupture Precipitate Anisotropy Crack-growth Creep Slip Cmsx-4 Microstructure Dislocations
URL	查看原文
WOS记录号	WOS:000255256300033
引用统计	被引频次：36[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/321006/32952
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. L. Liu,T. Jin,X. F. Sun,et al. Anisotropy of stress rupture properties of a Ni base single crystal superalloy at two temperatures[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,479(1-2):277-284.
APA	J. L. Liu,T. Jin,X. F. Sun,J. H. Zhang,H. R. Guan,&Z. Q. Hu.(2008).Anisotropy of stress rupture properties of a Ni base single crystal superalloy at two temperatures.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,479(1-2),277-284.
MLA	J. L. Liu,et al."Anisotropy of stress rupture properties of a Ni base single crystal superalloy at two temperatures".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 479.1-2(2008):277-284.