| "Self-sharpening" tungsten high-entropy alloy | |
Liu XF(刘兴发)1,2,3 ; 田智立1,2); Zhang XF4; Chen HH4; Liu TW(刘天威)1,2,3; Chen Y(陈艳)1,2,3; Wang YJ(王云江)1,2,3; Dai LH(戴兰宏)1,2,3
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| Corresponding Author | Dai, Lan-Hong([email protected]) |
| Source Publication | ACTA MATERIALIA
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| 2020-03-01 | |
| Volume | 186Pages:257-266 |
| ISSN | 1359-6454 |
| Abstract | "Self-sharpening", a material maintaining its acute head shape during penetration, is highly desirable in a wide range of engineering applications. However, it remains a great challenge to make it occur in conventional single-principal-element alloys. Here, we develop a new chemical-disordered multi-phase tungsten high-entropy alloy that exhibits outstanding self-sharpening capability, in sharp contrast to conventional tungsten alloys only showing mushrooming. This alloy consists of a BCC dendrite phase and a rhombohedral phase embedded in the continuous FCC matrix, and such a unique microstructure leads to a 10-20% better penetration performance than conventional tungsten heavy alloys. We show that emergence of the self-sharpening is triggered by the ultrastrong phase stimulated dynamic recrystallization softening mediated shear banding. This study sheds light on the origin of self-sharpening and might open new opportunities for developing high-performance penetrator materials. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | High-entropy alloy Tungsten alloy Self-sharpening Shear band Dynamic recrystallization |
| DOI | 10.1016/j.actamat.2020.01.005 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000518698300024 |
| WOS Keyword | ADIABATIC SHEAR-BAND ; SOLID-SOLUTION ; DYNAMIC RECRYSTALLIZATION ; MECHANICAL-PROPERTIES ; METALLIC-GLASS ; PARTICLE-SIZE ; DEFORMATION ; BEHAVIOR ; LOCALIZATION ; DEPENDENCE |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | NSFC[11790292] ; NSFC[51901235] ; National Key Research and Development Program of China[2017YFB0702003] ; Strategic Priority Research Program[XDB22040302] ; Strategic Priority Research Program[XDB22040303] ; Key Research Program of Frontier Sciences[QYZDJSSW-JSC011] ; Youth Promotion Association of Chinese Academy of Sciences |
| Funding Organization | NSFC ; National Key Research and Development Program of China ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Youth Promotion Association of Chinese Academy of Sciences |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Dai, Lan-Hong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/81835 |
| 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, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 3.CAS Ctr Excellence Complex Syst Mech, Beijing 100190, Peoples R China; 4.Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Peoples R China |
| Recommended Citation GB/T 7714 | Liu XF,田智立1,2),Zhang XF,et al. "Self-sharpening" tungsten high-entropy alloy[J]. ACTA MATERIALIA,2020,186:257-266.Rp_Au:Dai, Lan-Hong |
| APA | 刘兴发.,田智立1,2).,Zhang XF.,Chen HH.,刘天威.,...&戴兰宏.(2020)."Self-sharpening" tungsten high-entropy alloy.ACTA MATERIALIA,186,257-266. |
| MLA | 刘兴发,et al.""Self-sharpening" tungsten high-entropy alloy".ACTA MATERIALIA 186(2020):257-266. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2020112.pdf（4929KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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