Formation of nanograins in Ni-Co based superalloys compressed quasistatically at high temperature

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	Formation of nanograins in Ni-Co based superalloys compressed quasistatically at high temperature
	Xu, H. ; Zhang, Z. J. ; Zhang, P. ; Cui, C. Y. ; Jin, T. ; Zhang, Z. F.
刊名	SCRIPTA MATERIALIA
	2017-07-15
卷号	136 页码:92-96
关键词	Superalloy Nanograin Grain refinement Microtwin Stacking fault energy
ISSN号	1359-6462
通讯作者	Zhang, ZJ ; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China. ; Zhang, ZF (reprint author), Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China. ; Cui, CY (reprint author), Chinese Acad Sci, Inst Met Res, Superalloy Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
中文摘要	In this study, the performance of hot compressive deformation was investigated in two newly developed Ni-Co based superalloys having different stacking fault energy (SFE). It is interesting to discover that nanograins (NGs) can be produced in superalloy deformed at high temperature and relatively low strain rate. With the decrease of SFE and strain rate, the formation of NGs will be promoted obviously, leading to the negative strain rate sensitivity of compressive stress in superalloys. The NGs, generated through the fragmentation of subgrains by microtwins, may become a candidate choice for dynamically strengthening superalloys at high temperature. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
资助信息	National Natural Science Foundation of China (NSFC) [51331007]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78046]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Xu, H.,Zhang, Z. J.,Zhang, P.,et al. Formation of nanograins in Ni-Co based superalloys compressed quasistatically at high temperature[J]. SCRIPTA MATERIALIA,2017,136:92-96.
APA	Xu, H.,Zhang, Z. J.,Zhang, P.,Cui, C. Y.,Jin, T.,&Zhang, Z. F..(2017).Formation of nanograins in Ni-Co based superalloys compressed quasistatically at high temperature.SCRIPTA MATERIALIA,136,92-96.
MLA	Xu, H.,et al."Formation of nanograins in Ni-Co based superalloys compressed quasistatically at high temperature".SCRIPTA MATERIALIA 136(2017):92-96.