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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.; 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
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume136Pages:92-96
AbstractIn 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.
description.department[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
KeywordSuperalloy Nanograin Grain Refinement Microtwin Stacking Fault Energy
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51331007]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78046
Collection中国科学院金属研究所
Corresponding AuthorZhang, 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.
Recommended Citation
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.
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