Creep anisotropy of a 3rd generation nickel-base single crystal superalloy at 850 degrees C

doi:10.1016/j.msea.2019.05.075

IMR OpenIR

	Creep anisotropy of a 3rd generation nickel-base single crystal superalloy at 850 degrees C
	Li, Yifei 1,2; Wang, Li 1; Zhang, Gong 1; Zhang, Jian 1; Lou, Langhong 1
通讯作者	Wang, Li(wangli@imr.ac.cn)
	2019-07-08
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	760 页码:26-36
摘要	The influence of orientation on the creep behaviors of a 3rd generation single crystal superalloy was studied at 850 degrees C. It is found that the creep properties are highly anisotropic for [001], [011] and [111] specimens. The [111] samples show the longest creep life. The [011] specimens display the shortest creep life of less than 1 h and the longest elongation. And [001] specimens exhibit the intermediate creep life. Electron backscattered diffraction (EBSD) analyses and transmission electron microscopy (TEM) observations show that the creep anisotropy is mainly related to the slip systems that activated, especially the < 112 > {111} slip systems. Single slip of < 112 > {111} system results in a high creep strain and poor property, which controls the primary creep of [001] and entire creep stage of [011] specimens. While interaction of primary and secondary < 112 > {111} systems has an effect on work hardening, which occurs during steady and tertiary creep of [111] orientation and hence results in the best creep property of [111] specimens. By comparing with SRR99 and CMSX-4 alloys, higher Re content in DD33 alloy may facilitate the formation of continuous stacking faults in [011] specimens and activation of multiple < 112 > {111} slip systems in [111] specimens, which will affect the creep property and anisotropy.
关键词	Nickel base superalloy Creep Anisotropy Microstructure Dislocation
资助者	National Natural Science Foundation of China
DOI	10.1016/j.msea.2019.05.075
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871210] ; National Natural Science Foundation of China[51671196] ; National Natural Science Foundation of China[51631008]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000474501200004
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：26[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/321006/134477
专题	中国科学院金属研究所
通讯作者	Wang, Li
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, Yifei,Wang, Li,Zhang, Gong,et al. Creep anisotropy of a 3rd generation nickel-base single crystal superalloy at 850 degrees C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,760:26-36.
APA	Li, Yifei,Wang, Li,Zhang, Gong,Zhang, Jian,&Lou, Langhong.(2019).Creep anisotropy of a 3rd generation nickel-base single crystal superalloy at 850 degrees C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,760,26-36.
MLA	Li, Yifei,et al."Creep anisotropy of a 3rd generation nickel-base single crystal superalloy at 850 degrees C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 760(2019):26-36.