| Superior dynamic shear properties and deformation mechanisms in a high entropy alloy with dual heterogeneous structures | |
Tan S(覃双)1 ; Yang MX(杨沐鑫)1; Liu YK(刘琰珂)1,2; Jiang P(姜萍)1; Fan JT3; Yuan FP(袁福平)1,2; Wu XL(武晓雷)1,2
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| Corresponding Author | Yuan, Fuping([email protected]) |
| Source Publication | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
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| 2022-07-01 | |
| Volume | 19Pages:3287-3301 |
| ISSN | 2238-7854 |
| Abstract | Both heterogeneous grain structure and dual nanoprecipitates were designed in a Al-0.5 Cr0.9FeNi2.5V0.2 high entropy alloy (HEA), and the dynamic shear responses were investi-gated by hat-shaped specimens in split Hopkinson pressure bar tests. The present HEA with heterogeneous structure displays an unprecedented synergy of dynamic shear strength and ductility, as compared to the literature data for other metals and alloys. The excellent dynamic shear properties in the unaged samples could be due to the dynamical grain refinement, the dislocations hardening, and the precipitation hardening. The aged samples with a higher volume fraction of coherent L1(2) nanoprecipitates display even better dynamic shear properties, as compared to the unaged samples, which can be attributed to the triggered planar dislocation slip, the stored higher density of dislocations, the formation of dislocation substructure and the more pronounced precipitation hardening for postponing the occurrence of the adiabatic shear band (ASB). The high strain rate, high strain/stress magnitude, high adiabatic temperature rise, and fast-cooling process within ASB were observed to induce the dynamic recrystallization and the phase transformation from FCC phase to B2 phase, and this newly observed phase transformation phenomenon was not observed before under quasi-static deformation conditions. (C) 2022 The Author(s). Published by Elsevier B.V. |
| Keyword | High-entropy alloys Heterogeneous structures Precipitates Strain hardening Adiabatic shear band Dynamic properties |
| DOI | 10.1016/j.jmrt.2022.06.074 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000830291700002 |
| WOS Keyword | GRADIENT ; STRAIN ; MICROSTRUCTURE ; EVOLUTION ; BANDS ; LOCALIZATION ; PLASTICITY ; STRENGTH ; BEHAVIOR ; METALS |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | National Key R&D Program of China[2017YFA0204402] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[11790293] ; China Postdoctoral Science Foundation[2021M703292] |
| Funding Organization | National Key R&D Program of China ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Yuan, Fuping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89795 |
| 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, 19A Yuquan Rd, Beijing 100049, Peoples R China; 3.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China |
| Recommended Citation GB/T 7714 | Tan S,Yang MX,Liu YK,et al. Superior dynamic shear properties and deformation mechanisms in a high entropy alloy with dual heterogeneous structures[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2022,19:3287-3301.Rp_Au:Yuan, Fuping |
| APA | 覃双.,杨沐鑫.,刘琰珂.,姜萍.,Fan JT.,...&武晓雷.(2022).Superior dynamic shear properties and deformation mechanisms in a high entropy alloy with dual heterogeneous structures.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,19,3287-3301. |
| MLA | 覃双,et al."Superior dynamic shear properties and deformation mechanisms in a high entropy alloy with dual heterogeneous structures".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 19(2022):3287-3301. |
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| Jp2022FA290.pdf（14516KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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