Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature

doi:10.1007/s40195-018-0827-0

IMR OpenIR

	Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature
	Li, Xiang-Wei 1,2; Wang, Li 1; Liu, Xin-Gang 1; Wang, Yao 1; Dong, Jia-Sheng 1; Lou, Lang-Hong 1
通讯作者	Dong, Jia-Sheng(djs@imr.ac.cn)
	2019-05-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	32 期号:5 页码:651-658
摘要	Effect of aging heat treatment on the grain boundary microstructure and creep properties of a cast Ni-based superalloy was investigated. With increasing aging temperature from 750 to 1000 degrees C, M23C6 carbides along the grain boundaries evolve from fine distributed block, continuous film into the coarse discrete block. Moreover, the M23C6 carbides are mainly enveloped within layers along grain boundaries during 1000 degrees C aging. Creep rupture lifetime and elongation at 760 degrees C and 645MPa are improved with increasing the aging temperature. In particular, the creep rupture lifetime of the specimens aging at 1000 degrees C is one order of magnitude higher than that of the specimens aging at 750 degrees C. The enhancement of ductility induced by the envelopes plays a significant role in the improvement of creep rupture lifetime.
关键词	Superalloys Creep Grain boundary Carbides Aging heat treatment
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.1007/s40195-018-0827-0
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0701403] ; National Natural Science Foundation of China[51701220] ; National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[51671196] ; National Natural Science Foundation of China[51871210]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000463780700012
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：10[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/321006/132979
专题	中国科学院金属研究所
通讯作者	Dong, Jia-Sheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiang-Wei,Wang, Li,Liu, Xin-Gang,et al. Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(5):651-658.
APA	Li, Xiang-Wei,Wang, Li,Liu, Xin-Gang,Wang, Yao,Dong, Jia-Sheng,&Lou, Lang-Hong.(2019).Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(5),651-658.
MLA	Li, Xiang-Wei,et al."Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.5(2019):651-658.