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

IMR OpenIR

	Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy
其他题名	Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy
	Gao Shuang; Zhou Yizhou; Liu Zhiquan; Jin Tao
	2018
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	34 期号:5 页码:806-810
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 °C, a new intergrowth structure called C phase was found within μ phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as μ phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 °C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than μ phase above 1150 °C that leads to an intergrowth pathway from μ phase to C phase.
其他摘要	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 ?C, a new intergrowth structure called C phase was found within μ phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as μ phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 ?C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than μ phase above 1150 ?C that leads to an intergrowth pathway from μ phase to C phase.
关键词	Ni-base superalloy Phase transformation Precipitation
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:6240454
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/152212
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Gao Shuang,Zhou Yizhou,Liu Zhiquan,et al. Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy[J]. Journal of Materials Science & Technology,2018,34(5):806-810.
APA	Gao Shuang,Zhou Yizhou,Liu Zhiquan,&Jin Tao.(2018).Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy.Journal of Materials Science & Technology,34(5),806-810.
MLA	Gao Shuang,et al."Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy".Journal of Materials Science & Technology 34.5(2018):806-810.