Effect of Heat Treatment on Microstructures and Stress Rupture Properties of Hot- Corrosion Resistant Single Crystal Superalloy

IMR OpenIR

	Effect of Heat Treatment on Microstructures and Stress Rupture Properties of Hot- Corrosion Resistant Single Crystal Superalloy
	Lai Yongjun 1,2; Ning Likui 1; Liu Yichuan 1,2; Liu Enze 1; Meng Xianglun 3; Tan Zheng 1,2; Tong Jian 1; Zheng Zhi 1
通讯作者	Ning Likui(lkning@imr.ac.cn)
	2023-06-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1875-5372
卷号	52 期号:6 页码:2243-2252
摘要	The effects of heat treatment on the microstructures and rupture properties at 1070 degrees C/140 MPa of a hot-corrosion resistant single crystal superalloy were investigated. The results show that long-term homogenization heat treatment significantly reduces element segregation. With prolonging the homogenization time, the area fraction of micropores is gradually increased, the average size keeps increasing, and the density of micropores is increased firstly and then decreased. With increasing the primary aging temperature, the size of gamma' phase is enlarged gradually, and the area fraction of gamma' phase is firstly increased and then decreased. The stress rupture life of the alloy is increased firstly and then decreased with increasing the primary aging temperature. When the primary aging temperature is 1100 degrees C, the size of the cubic gamma' phase is about 370 nm, the squareness is better, the area fraction of the gamma' phase is the largest, and the stress rupture life is the longest. The stress rupture fracture is characterized by ductile fracture. The carbides and micropores at the sub-grain boundary are the main crack sources to cause the stress rupture fracture of the sample.
关键词	hot-corrosion resistant single crystal superalloy heat treatment microstructure stress rupture property
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001028537300028
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：1[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/321006/178754
专题	中国科学院金属研究所
通讯作者	Ning Likui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110006, Peoples R China 3.Univ Sci & Technol Liaoning, Sch Mech Engn & Automat, Anshan 114051, Peoples R China
推荐引用方式 GB/T 7714	Lai Yongjun,Ning Likui,Liu Yichuan,et al. Effect of Heat Treatment on Microstructures and Stress Rupture Properties of Hot- Corrosion Resistant Single Crystal Superalloy[J]. RARE METAL MATERIALS AND ENGINEERING,2023,52(6):2243-2252.
APA	Lai Yongjun.,Ning Likui.,Liu Yichuan.,Liu Enze.,Meng Xianglun.,...&Zheng Zhi.(2023).Effect of Heat Treatment on Microstructures and Stress Rupture Properties of Hot- Corrosion Resistant Single Crystal Superalloy.RARE METAL MATERIALS AND ENGINEERING,52(6),2243-2252.
MLA	Lai Yongjun,et al."Effect of Heat Treatment on Microstructures and Stress Rupture Properties of Hot- Corrosion Resistant Single Crystal Superalloy".RARE METAL MATERIALS AND ENGINEERING 52.6(2023):2243-2252.