Precipitation behaviour of beta and gamma ' in high Al low thermal expansion superalloy

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	Precipitation behaviour of beta and gamma ' in high Al low thermal expansion superalloy
	L. X. Yu; X. F. Sun; W. R. Sun; S. R. Guo; Z. Q. Hu
	2011
发表期刊	Materials Science and Technology
ISSN	0267-0836
卷号	27 期号:1 页码:421-425
摘要	The precipitation behaviour of beta and gamma' in a low thermal expansion superalloy IN783 was investigated. It was demonstrated that coarse gamma' precipitates do form during beta aging at 845 degrees C. During aging at lower temperatures, not only fine gamma' particles are formed, the coarse gamma' particles also change from spherical to cuboidal. Therefore, a bimodal distribution of gamma' is formed in the matrix after standard aging treatment. The formation of beta consumes Al atoms, which constrains the formation of coarse gamma' in the zone around beta during aging at 845 degrees C. During gamma' aging, a fine gamma' precipitating zone is formed around b. Prolonging the beta aging duration markedly promotes the formation of beta at grain boundaries and in the matrix, significantly enlarges the fine gamma' precipitating zone and influences the precipitation of coarse gamma'.
部门归属	[yu, l. x.; sun, x. f.; sun, w. r.; guo, s. r.; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;sun, wr (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;wrsun@imr.ac.cn
关键词	Thermal Expansion In783 Gamma Prime Beta Aluminium Heat-treatment Tensile Properties Inconel Alloy-783 Microstructure In738lc Growth
URL	查看原文
WOS记录号	WOS:000285870400069
引用统计	被引频次：4[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/321006/30853
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. X. Yu,X. F. Sun,W. R. Sun,et al. Precipitation behaviour of beta and gamma ' in high Al low thermal expansion superalloy[J]. Materials Science and Technology,2011,27(1):421-425.
APA	L. X. Yu,X. F. Sun,W. R. Sun,S. R. Guo,&Z. Q. Hu.(2011).Precipitation behaviour of beta and gamma ' in high Al low thermal expansion superalloy.Materials Science and Technology,27(1),421-425.
MLA	L. X. Yu,et al."Precipitation behaviour of beta and gamma ' in high Al low thermal expansion superalloy".Materials Science and Technology 27.1(2011):421-425.