Intergrowth of C phase within mu phase in a Re-containing Ni-base single crystal superalloy

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	Intergrowth of C phase within mu phase in a Re-containing Ni-base single crystal superalloy
	Gao, S; Zhou, YZ; Liu, ZQ; Jin, T; Liu, ZQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2018-05-01
卷号	34 期号:5 页码:806-810
关键词	Nickel-based Superalloys Close-packed Phase Rhenium Additions Creep Resistance Precipitation Cmsx-4 Co7w6
ISSN号	1005-0302
英文摘要	Precipitation of topologically close-packed phases in a Re-containing Ni-base single crystal superalloy was studied under elevated temperature by in situ transmission electron microscopy. Above 1150 degrees C, a new intergrowth structure called C phase was found within mu phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as mu phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 degrees C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than mu phase above 1150 degrees C that leads to an intergrowth pathway from mu phase to C phase. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; Precipitation of topologically close-packed phases in a Re-containing Ni-base single crystal superalloy was studied under elevated temperature by in situ transmission electron microscopy. Above 1150 degrees C, a new intergrowth structure called C phase was found within mu phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as mu phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 degrees C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than mu phase above 1150 degrees C that leads to an intergrowth pathway from mu phase to C phase. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Natural Science Foundation of China [51271186]; Hundred Talents Program of the Chinese Academy of Sciences
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79332]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhou, YZ; Liu, ZQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Gao, S,Zhou, YZ,Liu, ZQ,et al. Intergrowth of C phase within mu phase in a Re-containing Ni-base single crystal superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(5):806-810.
APA	Gao, S,Zhou, YZ,Liu, ZQ,Jin, T,&Liu, ZQ .(2018).Intergrowth of C phase within mu phase in a Re-containing Ni-base single crystal superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(5),806-810.
MLA	Gao, S,et al."Intergrowth of C phase within mu phase in a Re-containing Ni-base single crystal superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.5(2018):806-810.