Effects of Al on microstructural stability and related stress-rupture properties of a third-generation single crystal superalloy

doi:10.1016/j.jmst.2019.05.003

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of Al on microstructural stability and related stress-rupture properties of a third-generation single crystal superalloy
	Sun, Jingxia 1,2; Liu, Jinlai 2; Liu, Lirong 1; Zhou, Yizhou 2; Li, Jinguo 2,3; Sun, Xiaofeng 2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-11-01
卷号	35 期号:11 页码:2537-2542
关键词	Ni base single crystal superalloys Thermal exposure Microstructural stability Stress-rupture property Al
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.05.003
通讯作者	Sun, Xiaofeng(xfsun@imr.ac.cn)
英文摘要	To examine the influences of minor modification of Al content on the microstructural stabilities and stress rupture properties, two alloys with minor difference in Al content were exposed isothermally at 1100 degrees C for 100 h, 500 h, and 1000 h, respectively. The microstructures were characterized before and after thermal exposure. It was found that when Al content was decreased by 0.4 wt %, the volume fraction gamma' decreased by 4 %, the size of gamma' increased by 40 nm, the matrix channel width increased by 5 nm, and the misfit degree of -gamma/gamma' phases increased by 0.006 % after heat treatment (HT). During thermal exposure, the alloy with low Al content had a better resistance to coarsening of gamma' phase and precipitation of mu phase. The gamma' particles of the alloy with high Al content tended to connect each other and coarsened along <100>directions; however, the gamma' particles of the alloy with low Al content remained cubic after 500 h. A serious coarsening behavior took place in the two alloys after aging for 1000 h. The structural stabilities were significantly improved. However, the change of 0.4 wt % Al content was found to have little effect on the high temperature stress-rupture properties. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Key Research and Development Program of China[2018YFB 1106600]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000497965900013
资助机构	National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136209]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun, Xiaofeng
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Space Mfg Technol Key Lab, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Sun, Jingxia,Liu, Jinlai,Liu, Lirong,et al. Effects of Al on microstructural stability and related stress-rupture properties of a third-generation single crystal superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(11):2537-2542.
APA	Sun, Jingxia,Liu, Jinlai,Liu, Lirong,Zhou, Yizhou,Li, Jinguo,&Sun, Xiaofeng.(2019).Effects of Al on microstructural stability and related stress-rupture properties of a third-generation single crystal superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(11),2537-2542.
MLA	Sun, Jingxia,et al."Effects of Al on microstructural stability and related stress-rupture properties of a third-generation single crystal superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.11(2019):2537-2542.