| Dynamic behavior of CrMnFeCoNi high-entropy alloy in impact tension | |
Qiao Y(乔禹)1,2,3; Chen Y(陈艳)2,3 ; Cao FH(曹富华)2,3; Wang HY(汪海英)2,3; Dai LH(戴兰宏)1,2,3,4
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| Corresponding Author | Chen, Yan([email protected]) ; Dai, Lan-Hong([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
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| 2021-12-01 | |
| Volume | 158Pages:12 |
| ISSN | 0734-743X |
| Abstract | High-entropy alloys (HEAs), recently emerging alloy materials with numerous excellent performances, may have a wide application prospect in impact engineering. However, previous research regarding the mechanical behavior of HEAs has primarily focused on quasi-static testing, whereas the dynamic mechanical behavior of HEAs at high strain rates remains elusive. In this paper, the unusual simultaneous strength-plasticity enhancement and the inhibition of the high strain rate embrittlement of CrMnFeCoNi HEA in impact tension were revealed via split Hopkinson tensile bar (SHTB) with high-speed photography. Quantitative microstructural analysis indicates that the cooperation of twins and dislocations is the crucial mechanism for the synchronous enhancement of strength-plasticity in this alloy under impact tension. A thermo-viscoplastic constitutive model based on dislocations and twins evolution was developed to describe dynamic mechanical behavior. The high plastic hardening under dynamic tension was revealed to be induced by high dislocation forest hardening and strong resistance of twins to dislocation motion. The excellent combination of dynamic strength-plasticity of CrMnFeCoNi HEA makes it becoming a promising candidate for impact engineering applications. |
| Keyword | High-entropy alloy Split Hopkinson tensile bar Strain rate effect Dislocation Twin |
| DOI | 10.1016/j.ijimpeng.2021.104008 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000706516300004 |
| WOS Keyword | STRAIN-RATE SENSITIVITY ; HIGH-STRENGTH CONCRETE ; DISLOCATION DENSITY ; DEFORMATION-BEHAVIOR ; EVOLUTION ; STRESS ; ENERGY ; MICROSTRUCTURE ; TEMPERATURES ; DIFFRACTION |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | National Key Research and Development Program of China[2017YFB0702003] ; NSFC[11790292] ; NSFC[11972346] ; NSFC[11672316] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040303] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJSSW-JSC011] ; Science Challenge Project[TZ2018001] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] |
| Funding Organization | National Key Research and Development Program of China ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Science Challenge Project ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Chen, Yan ; Dai, Lan-Hong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87628 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 4.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China |
| Recommended Citation GB/T 7714 | Qiao Y,Chen Y,Cao FH,et al. Dynamic behavior of CrMnFeCoNi high-entropy alloy in impact tension[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2021,158:12.Rp_Au:Chen, Yan, Dai, Lan-Hong |
| APA | 乔禹,陈艳,曹富华,汪海英,&戴兰宏.(2021).Dynamic behavior of CrMnFeCoNi high-entropy alloy in impact tension.INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,158,12. |
| MLA | 乔禹,et al."Dynamic behavior of CrMnFeCoNi high-entropy alloy in impact tension".INTERNATIONAL JOURNAL OF IMPACT ENGINEERING 158(2021):12. |
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| Jp2021F534.pdf（18881KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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