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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 Publication | SCRIPTA MATERIALIA
 |
| ISSN | 1359-6462 |
| Volume | 136Pages:92-96 |
| Abstract | 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. |
| 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 |
| Keyword | Superalloy Nanograin Grain Refinement Microtwin Stacking Fault Energy |
| Subject Area | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | National Natural Science Foundation of China (NSFC) [51331007] |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/78046 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | 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. |
| 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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