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

CORC > 金属研究所 > 中国科学院金属研究所

	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 2; Zhang, Gong 2; Zheng, Wei 2; Qi, Dongqing 2; Du, Kui 2; Zhang, Jian 2; Lou, Langhong 2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2019-08-19
卷号	763 页码:7
关键词	Superalloy Creep Superdislocation Rafted structure [111] orientation
ISSN号	0921-5093
DOI	10.1016/j.msea.2019.138162
通讯作者	Wang, Li(wangli@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000483456900036
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/135312]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Li
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, 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.