Properties and microstructures of M951 alloy after long-term exposure

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	Properties and microstructures of M951 alloy after long-term exposure
	J. J. Yu; Z. W. Lian; Z. K. Chu; X. F. Sun; H. R. Guan; Z. Q. Hu
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:7-8 页码:1896-1902
摘要	The amount of M(23)C(6) from decomposed MC during long time ageing at 900 degrees C is much greater than at 1100 degrees C. The carbide particle can retard mobile dislocations shearing gamma' precipitates, and secondary gamma' precipitates vary limitedly so that the 900 degrees C/100 h stress rupture life reaches peak value. With increase of ageing times at 1100 degrees C, a large amount of fine spheroidal gamma' particles precipitate among secondary gamma' precipitates so that the 1000 degrees C yield strength of the alloy abnormally increases comparing to that with standard heat treatment. After exposure at 1100 degrees C, the dislocation networks at the interface of gamma'/gamma are destroyed gradually and cannot hinder more dislocations cutting into gamma' particles, which results in the decrease of stress rupture life. The room-temperature tensile deformation mechanisms of specimens after long-term exposure at 1100 degrees C are mainly controlled by dislocation glide and climb. It shows that ageing temperature has an important effect on deformation mechanism. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[yu jinjiang; lian zhanwei; chu zhaokuang; sun xiaofeng; guan hengrong; hu zhuangqi] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china.;yu, jj (reprint author), chinese acad sci, inst met res, wenhua rd 72, shenyang 110016, liaoning, peoples r china;jjyu@imr.ac.cn
关键词	M951 Superalloy Heat Treatment Long-term Ageing Yield Strength Stress Rupture Life Ni-base Superalloy Nickel-based Superalloy Temperature-dependence Mechanical-properties Thermal Exposure Precipitation Growth Boron
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WOS记录号	WOS:000275639200033
引用统计	被引频次：11[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/321006/31658
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. J. Yu,Z. W. Lian,Z. K. Chu,et al. Properties and microstructures of M951 alloy after long-term exposure[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(7-8):1896-1902.
APA	J. J. Yu,Z. W. Lian,Z. K. Chu,X. F. Sun,H. R. Guan,&Z. Q. Hu.(2010).Properties and microstructures of M951 alloy after long-term exposure.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(7-8),1896-1902.
MLA	J. J. Yu,et al."Properties and microstructures of M951 alloy after long-term exposure".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.7-8(2010):1896-1902.