Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy

doi:10.1016/j.msea.2019.138162

IMR OpenIR

	Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy
	Li, Yifei 1,2; Wang, Li 1; Zhang, Gong 1; Zheng, Wei 1; Qi, Dongqing 1; Du, Kui 1; Zhang, Jian 1; Lou, Langhong 1
通讯作者	Wang, Li(wangli@imr.ac.cn)
	2019-08-19
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	763 页码:7
摘要	The configurations of superdislocations in a [111]-oriented nickel-base single crystal superalloy have been investigated after creep deformation at 1100 degrees C/150 MPa. The superdislocation arrays and hexagonal super dislocation networks are formed in irregular rafted gamma' phase, which are rarely observed in [001] crept specimens. It is believed that the superdislocation networks are formed by reactions of superdislocation arrays and another kind of superdislocations. Careful diffraction contrast analysis shows that the Burgers vector of the super-dislocation arrays is a [01 (1) over bar], which is not the favorable slip system when loaded along [111]. The formation of the arrays is supposed to be related to the matrix dislocations cross slipping in two {001} channels and the stress concentration caused by inhomogeneous rafted structures. The networks in gamma' phase may prevent dislocation movement and slash the increase of creep rate to some extent.
关键词	Superalloy Creep Superdislocation Rafted structure [111] orientation
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China
DOI	10.1016/j.msea.2019.138162
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] ; National Natural Science Foundation of China[51771204] ; National Key Research and Development Program of China[2016YFB0701403]
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:000483456900036
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：14[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/321006/135313
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, Shenyang 110016, 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 deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,763:7.
APA	Li, Yifei.,Wang, Li.,Zhang, Gong.,Zheng, Wei.,Qi, Dongqing.,...&Lou, Langhong.(2019).Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,763,7.
MLA	Li, Yifei,et al."Creep deformation related to gamma ' phase cutting at high temperature of a [111] oriented nickel-base single crystal superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 763(2019):7.