Influence of Y on stress rupture property of a Ni-based superalloy

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	Influence of Y on stress rupture property of a Ni-based superalloy
	P. J. Zhou; J. J. Yu; X. F. Sun; H. R. Guan; X. M. He; Z. Q. Hu
	2012
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	551 页码:236-240
摘要	This paper focuses on the influence of Y on the stress rupture properties of a Ni-based superalloy. It also gives reasons for stress rupture life decrease caused by excessive Y doping. It has been shown that the stress rupture lives are strongly dependent on Y concentrations. The stress rupture is low for the undoped alloy and increases through a maximum from 0.009 to 0.014 wt.% Y. The microstructures of the alloys have been studied by means of SEM, TEM and EDS. When an excessive amount of Y is introduced, some BCC structured Al2Ni6Y3 phases precipitate in the vicinity of the grain boundaries. Fractographic evaluations reveal that cracks originate around Al2Ni6Y3, leading to premature failure of the stress rupture specimens. There is also some fine cubic gamma' within the Al2Ni6Y3 phase. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[zhou, p. j.] jiangsu univ sci & technol, zhenjiang 212003, peoples r china. [zhou, p. j.; yu, j. j.; sun, x. f.; guan, h. r.; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [he, x. m.] zhejiang tianle grp co ltd, shengzhou 312400, peoples r china.;zhou, pj (reprint author), jiangsu univ sci & technol, 2 mengxi rd, zhenjiang 212003, peoples r china.;zhoupengjie@just.edu.cn
关键词	Stress Rupture Nickel-based Superalloys Grain Boundaries Fracture Yttrium Nickel-based Superalloy Mechanical-properties Yttrium Addition Creep-properties Rare-earth Alloy Ic6 Boron Microstructure Ni3al Behavior
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60527
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. J. Zhou,J. J. Yu,X. F. Sun,et al. Influence of Y on stress rupture property of a Ni-based superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2012,551:236-240.
APA	P. J. Zhou,J. J. Yu,X. F. Sun,H. R. Guan,X. M. He,&Z. Q. Hu.(2012).Influence of Y on stress rupture property of a Ni-based superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,551,236-240.
MLA	P. J. Zhou,et al."Influence of Y on stress rupture property of a Ni-based superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 551(2012):236-240.