Formation of eta and sigma phase in three polycrystalline superalloys and their impact on tensile properties

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	Formation of eta and sigma phase in three polycrystalline superalloys and their impact on tensile properties
	F. Long; Y. S. Yoo; C. Y. Jo; S. M. Seo; Y. S. Song; T. Jin; Z. Q. Hu
	2009
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:1-2 页码:361-369
摘要	The formation and phase transformation mechanism of eta and sigma phases in three experimental polycrystalline superalloys were studied. It was shown that a high (Ti + Al) content in the alloys would favor the formation of eta and alpha phases in the interdendritic region. Different as-cast microstructures resulted in different phase transformation processes during heat treatment and thermal exposure. Influence of eta and sigma phase on tensile properties had been investigated as well. The tensile properties of the alloys were sensitive to gamma' volume fraction of the alloys, as well as morphologies of eta and sigma phases in the interdendritic area. Formation of plate-like eta phase had negative impact on the low and intermediate temperature tensile properties of the polycrystalline superalloy. (c) 2009 Elsevier B.V. All rights reserved.
部门归属	[long, f.; hu, z. q.] chinese acad sci, inst met res, superalloy div, shenyang, peoples r china. [yoo, y. s.; jo, c. y.; seo, s. m.] korea inst mat sci, high temp mat grp, chang won, kyungunam, south korea. [song, y. s.] doosan heavy ind & construct co ltd, r&d ctr, mat dev team, chang won, kyungunam, south korea.;long, f (reprint author), chinese acad sci, inst met res, superalloy div, 72 wenhua rd, shenyang, peoples r china;flong_26@hotmail.com
关键词	Polycrystalline Superalloy Eta Phase Sigma Phase Tensile Property Ni-base Superalloy Alloy Microstructure Solidification Decomposition
URL	查看原文
WOS记录号	WOS:000271611500053
引用统计	被引频次：58[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/321006/32142
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Long,Y. S. Yoo,C. Y. Jo,et al. Formation of eta and sigma phase in three polycrystalline superalloys and their impact on tensile properties[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2009,527(1-2):361-369.
APA	F. Long.,Y. S. Yoo.,C. Y. Jo.,S. M. Seo.,Y. S. Song.,...&Z. Q. Hu.(2009).Formation of eta and sigma phase in three polycrystalline superalloys and their impact on tensile properties.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(1-2),361-369.
MLA	F. Long,et al."Formation of eta and sigma phase in three polycrystalline superalloys and their impact on tensile properties".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.1-2(2009):361-369.