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

IMR OpenIR

	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.; 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.
	2017-07-15
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	136 页码:92-96
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.; 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.
部门归属	[xu, h. ; zhang, z. j. ; zhang, p. ; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [xu, h. ; zhang, z. f.] univ chinese acad sci, 19 yuquan rd, beijing 100049, peoples r china ; [cui, c. y. ; jin, t.] chinese acad sci, inst met res, superalloy div, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Superalloy Nanograin Grain Refinement Microtwin Stacking Fault Energy
学科领域	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China (NSFC) [51331007]
收录类别	SCI
语种	英语
WOS记录号	WOS:000402943600021
引用统计	被引频次：7[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/321006/78046
专题	中国科学院金属研究所
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.
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..,...&Cui, CY .(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.