Effect of DC field on mechanical property of a Ni-based single crystal superalloy

IMR OpenIR

	Effect of DC field on mechanical property of a Ni-based single crystal superalloy
	Feng Xiaohui; Yang Yuansheng; Li Yingju; 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:947-951
摘要	The tensile properties at room temperature and stress-rupture properties at high temperature of a kind of Ni-based single crystal superalloy grown under a DC field were measured. The results show that the yield strength at room temperature is increased and the stress-rupture life and ductility at 980 degrees C and 221 MPa are improved, whereas the ultimate tensile strength at room temperature varies unnotedly and the ductility at room temperature is reduced. SEM observation and EMPA analysis showed that the prime dendrite arm spacing (PDAS), size of gamma' particles, alloying element segregation, eutectic and the sub-grain boundaries are reduced with the increase of the current. It is considered that the improvement of yield strength and stress-rupture properties arise from the refining of gamma' particles and the change of gamma/gamma' misfits caused by reduction of microsegregation of alloying elements. Furthermore, the enhancement of the stress-rupture properties is also related to the reductions in the PDAS, eutectic and sub-grain boundaries under the action of the electric field.
关键词	Ni-based single crystal superalloy DC electric field mechanical property gamma ' phase microsegregation
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:000240970500010
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：4[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/321006/88985
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	Feng Xiaohui,Yang Yuansheng,Li Yingju,et al. Effect of DC field on mechanical property of a Ni-based single crystal superalloy[J]. ACTA METALLURGICA SINICA,2006,42(9):947-951.
APA	Feng Xiaohui,Yang Yuansheng,Li Yingju,Zhang Yunan,&Hu Zhuangqi.(2006).Effect of DC field on mechanical property of a Ni-based single crystal superalloy.ACTA METALLURGICA SINICA,42(9),947-951.
MLA	Feng Xiaohui,et al."Effect of DC field on mechanical property of a Ni-based single crystal superalloy".ACTA METALLURGICA SINICA 42.9(2006):947-951.