Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy

doi:10.1016/j.scriptamat.2022.114769

CORC > 金属研究所 > 中国科学院金属研究所

	Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy
	Li, Yawei 1,2; Wang, Li 2; He, Yufeng 1,2; Zheng, Wei 2; Lou, Langhong 2; Zhang, Jian 2
刊名	SCRIPTA MATERIALIA
	2022-08-01
卷号	217 页码:5
关键词	Superalloy Creep Interfacial dislocation networks Scanning transmission electron microscopy Scanning electron microscopy
ISSN号	1359-6462
DOI	10.1016/j.scriptamat.2022.114769
通讯作者	Wang, Li(wangli@imr.ac.cn)
英文摘要	Generally, the denser dislocation networks in the gamma/gamma' interface should result in a lower minimum creep rate in single crystal Ni-based superalloy at high temperatures. However, in this study, with rising temperature from 1100 degrees C to 1150 degrees C, the spacing of dislocation networks decreases almost linearly, while the minimum creep rate increases nonlinearly. This is attributed to the enhanced dislocation-climb in the gamma/gamma' interface and gamma'-cutting by a<010> superdislocations. Further, dislocation networks can act as a superdislocation source during the secondary creep stage besides the well-known strengthening effect.
资助项目	National Natural Science Foundation of China[51871210] ; National Natural Science Foundation of China[51771204]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000805932000003
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174783]
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, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Yawei,Wang, Li,He, Yufeng,et al. Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy[J]. SCRIPTA MATERIALIA,2022,217:5.
APA	Li, Yawei,Wang, Li,He, Yufeng,Zheng, Wei,Lou, Langhong,&Zhang, Jian.(2022).Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy.SCRIPTA MATERIALIA,217,5.
MLA	Li, Yawei,et al."Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy".SCRIPTA MATERIALIA 217(2022):5.