Effect of DC electric current on the precipitation of gamma '-phase in a Ni-based single crystal superalloy

IMR OpenIR

	Effect of DC electric current on the precipitation of gamma '-phase in a Ni-based single crystal superalloy
	Li Yingju; Yang Yuansheng; Feng Xiaohui; Zhang Yunan; Hu Zhuangqi
通讯作者	Yang Yuansheng(ysyang@imr.ac.cn)
	2006-09-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	42 期号:9 页码:942-946
摘要	The effects of DC electric current on the precipitation of gamma'-phase in a Ni-based single crystal superalloy were studied. Under the action of different current densities the superalloy was cooled at different cooling rates after solution heat treatment at 1250 degrees C for 4 h. The experiment results show that the size and volume fraction of gamma'-phase increase with the increase of current density, while the planar density of gamma'-phase decreases at air cooling; under the action of the same current density, the size and volume fraction of gamma'-phase decrease and the planar density of gamma'-phase increases with the increase of cooling rate. It is considered that the electromigration effect induced by the DC current accelerates the diffusion of atoms during gamma'-phase precipitation, which enhances the precipitation of gamma'-phase, and the Joule heat effect produced by the DC current reduces the cooling rate, which speeds up the growth of gamma'-phase.
关键词	Ni-based single crystal superalloy gamma '-phase precipitation DC electric current electromigration cooling rate
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000240970500009
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：2[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/321006/86998
专题	中国科学院金属研究所
通讯作者	Yang Yuansheng
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li Yingju,Yang Yuansheng,Feng Xiaohui,et al. Effect of DC electric current on the precipitation of gamma '-phase in a Ni-based single crystal superalloy[J]. ACTA METALLURGICA SINICA,2006,42(9):942-946.
APA	Li Yingju,Yang Yuansheng,Feng Xiaohui,Zhang Yunan,&Hu Zhuangqi.(2006).Effect of DC electric current on the precipitation of gamma '-phase in a Ni-based single crystal superalloy.ACTA METALLURGICA SINICA,42(9),942-946.
MLA	Li Yingju,et al."Effect of DC electric current on the precipitation of gamma '-phase in a Ni-based single crystal superalloy".ACTA METALLURGICA SINICA 42.9(2006):942-946.