Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4

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	Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4; Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4
	K. Y. Cheng; C. Y. Job; D. H. Kim; T. Jin; Z. Q. Hu
	2009 ; 2009
发表期刊	Materials Characterization ; Materials Characterization
ISSN	1044-5803 ; 1044-5803
卷号	60 期号:3 页码:210-218
摘要	The influence of local chemical segregation on the directional coarsening behavior of gamma' phase has been investigated in a nickel-base single crystal superalloy during load-free thermal exposure. it is found that the gamma' phase was preferentially oriented with the direction perpendicular to the dendrite arm growth axis. The chemical gradients caused by local chemical heterogeneities were carefully measured on the scale of a dendrite. It showed that the directions of the gamma' rafting and the chemical gradients are consistent and the magnitude of the chemical gradients affects the rafting rates to some extent. it is suggested that the internal chemical gradients can orientate the development of the gamma' rafts by leading to anisotropy in their growth kinetics during Ostwald ripening. Further-more, influence of the local chemical segregation on the mechanical properties is also discussed. Crown Copyright (C) 2008 Published by Elsevier Inc. All rights reserved.; The influence of local chemical segregation on the directional coarsening behavior of gamma' phase has been investigated in a nickel-base single crystal superalloy during load-free thermal exposure. it is found that the gamma' phase was preferentially oriented with the direction perpendicular to the dendrite arm growth axis. The chemical gradients caused by local chemical heterogeneities were carefully measured on the scale of a dendrite. It showed that the directions of the gamma' rafting and the chemical gradients are consistent and the magnitude of the chemical gradients affects the rafting rates to some extent. it is suggested that the internal chemical gradients can orientate the development of the gamma' rafts by leading to anisotropy in their growth kinetics during Ostwald ripening. Further-more, influence of the local chemical segregation on the mechanical properties is also discussed. Crown Copyright (C) 2008 Published by Elsevier Inc. All rights reserved.
部门归属	[cheng, k. y.; jin, t.; hu, z. q.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china. [cheng, k. y.; job, c. y.] korea inst mat sci, high temp mat grp, chang won 641010, south korea. [kim, d. h.] korea inst mat sci, mat test & characterizat grp, chang won 641010, south korea.;cheng, ky (reprint author), chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china;kuiyucheng@hotmail.com ; [cheng, k. y.; jin, t.; hu, z. q.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china. [cheng, k. y.; job, c. y.] korea inst mat sci, high temp mat grp, chang won 641010, south korea. [kim, d. h.] korea inst mat sci, mat test & characterizat grp, chang won 641010, south korea.;cheng, ky (reprint author), chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china;kuiyucheng@hotmail.com
关键词	Nickel-base Single Crystal Superalloy Nickel-base Single Crystal Superalloy Thermal Exposure Thermal Exposure Gamma ' Gamma ' Directional Coarsening Directional Coarsening Nickel-base Superalloy Nickel-base Superalloy Temperature Creep-properties Temperature Creep-properties Precipitate Precipitate Morphology Morphology Microstructure Microstructure Compression Compression Parameters Parameters Interfaces Interfaces Apparent Apparent Kinetics Kinetics Alloy Alloy
URL	查看原文 ; 查看原文
WOS记录号	WOS:000264252800008 ; WOS:000264252800008
引用统计	被引频次：53[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/321006/31849
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Y. Cheng,C. Y. Job,D. H. Kim,et al. Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4, Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4[J]. Materials Characterization, Materials Characterization,2009, 2009,60, 60(3):210-218, 210-218.
APA	K. Y. Cheng,C. Y. Job,D. H. Kim,T. Jin,&Z. Q. Hu.(2009).Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4.Materials Characterization,60(3),210-218.
MLA	K. Y. Cheng,et al."Influence of local chemical segregation on the gamma ' directional coarsening behavior in single crystal superalloy CMSX-4".Materials Characterization 60.3(2009):210-218.