| Deformation nanotwins suppress shear banding during impact test of CrCoNi medium-entropy alloy | |
Wu XL(武晓雷)1,2 ; Yang MX(杨沐鑫)1; Jiang P(姜萍)1; Wang C3; Zhou LL(周玲玲)1; Yuan FP(袁福平)1,2; Ma E4
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| Corresponding Author | Wu, Xiaolei([email protected]) |
| Source Publication | SCRIPTA MATERIALIA
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| 2020-03-01 | |
| Volume | 178Pages:452-456 |
| ISSN | 1359-6462 |
| Abstract | We report deformation bands ahead of the crack tip in a CrCoNi alloy under impact loading, and analyze the effects of deformation twinning on strain localization in the form of shear banding. Due to low stacking fault energy, upon high-strain-rate deformation this medium-entropy alloy forms twins with thickness and spacing of only a few nanometers. These nano-twins are embedded dynamically not only ahead of any developing shear band to retard its advance, but also in its interior to work harden. This dual effect helps to suppress runaway shear banding instability that instigates failure and contributes to the energy absorption as recorded in instrumented Charpy tests. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Nano-twin Shear-band Strain hardening Impact toughness Medium-entropy alloy |
| DOI | 10.1016/j.scriptamat.2019.12.017 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000510947200091 |
| WOS Keyword | BRITTLE TRANSITION ; STAINLESS-STEEL ; TOUGHNESS ; TEMPERATURE ; FAILURE ; DUCTILE ; ENERGY ; PROPAGATION ; BEHAVIOR ; MODES |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | National Key R&D Program of China[2019YFA0200082] ; National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China[11572328] ; National Natural Science Foundation of China[11672313] ; National Natural Science Foundation of China[11790293] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; US-NSF-DMR[1804320] |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; US-NSF-DMR |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Wu, Xiaolei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/81524 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Cent Iron & Steel Res Inst, Cent Lab, 76 Xueyuan South Rd, Beijing 100081, Peoples R China; 4.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA |
| Recommended Citation GB/T 7714 | Wu XL,Yang MX,Jiang P,et al. Deformation nanotwins suppress shear banding during impact test of CrCoNi medium-entropy alloy[J]. SCRIPTA MATERIALIA,2020,178:452-456.Rp_Au:Wu, Xiaolei |
| APA | 武晓雷.,杨沐鑫.,姜萍.,Wang C.,周玲玲.,...&Ma E.(2020).Deformation nanotwins suppress shear banding during impact test of CrCoNi medium-entropy alloy.SCRIPTA MATERIALIA,178,452-456. |
| MLA | 武晓雷,et al."Deformation nanotwins suppress shear banding during impact test of CrCoNi medium-entropy alloy".SCRIPTA MATERIALIA 178(2020):452-456. |
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| Jp2020041.pdf（2359KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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