中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 非线性力学国家重点实验室
Ultra-strong heavy-drawn eutectic high entropy alloy wire

文献类型：期刊论文

作者Chen JX(陈金玺)2,3; Li T(李统)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
刊名ACTA MATERIALIA
出版日期2023-01-15
卷号243页码:14
ISSN号1359-6454
关键词Eutectic high entropy alloy wire Mechanical properties Gradient heterogeneous lamella structure Cross-slip
DOI10.1016/j.actamat.2022.118515
通讯作者Chen, Yan(lhdai@lnm.imech.ac.cn) ; Dai, Lan-Hong(lhdai@lnm.imech.ac.cn)
英文摘要Metallic wires with high strength-ductility at both room and cryogenic temperatures are always pur-sued for engineering applications. However, traditional metallic wires are tortured inevitably by strength -ductility trade-off dilemma. In this work, a gradient heterogeneous lamella structure, characterized with hard gradient-distributed B2 lamellae embedded in soft FCC lamellae matrix, is introduced into AlCoCrFeNi2.1 eutectic high entropy alloy (EHEA) wire by well-designed multiple-stage heavy-drawn and heat treatment processes, which achieves an outstanding strength-ductility synergy. This EHEA wire ex-hibits not only high tensile strength of 1.85 GPa and sufficient uniform elongation of-12% at room tem-perature, but also ultra-high tensile strength of 2.52 GPa and even slightly elevated uniform elongation of-14% at cryogenic temperature. In-depth microstructure characterization indicates that the gradient heterogeneous lamella structure facilitates a radial gradient distribution of geometrically necessary dis-location (GND) during tension, i.e., the GND density decreases gradually from the surface region to the central region of EHEA wire, which induces pronounced strain gradient strengthening effect and thus greatly benefits the mechanical properties. Intriguingly, at cryogenic temperature, dense cross-slip which gives rise to intensively dynamic microstructure refinement is firstly observed in the B2 phase of EHEA wire. The activation of cross-slip provides sufficient ductility while inducing evidently dynamic Hall-Petch effect, becoming the most effective deformation mechanism contributing to the unprecedented cryogenic tension properties. This work sheds light on designing ultra-strong EHEA wire and other advanced metal-lic wires.(c) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
分类号一类
WOS关键词HIGH-DUCTILITY ; HIGH-STRENGTH ; MECHANICAL-PROPERTIES ; CRYOGENIC STRENGTH ; TENSILE PROPERTIES ; BEHAVIOR ; STEEL ; DISLOCATION ; PLASTICITY ; MICROSTRUCTURE
资助项目NSFC[11790292] ; NSFC[11972346] ; NSFC[12102433] ; NSFC[U2141204] ; 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] ; Science Challenge Project[TZ2016001] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-3] ; opening project of State Key Laboratory of Explosion Science and Technology[KFJJ21-01Z] ; NSFC Basic Science Center Program for Multi-scale Problems in Nonlinear Mechanics[11988102]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000899583800003
资助机构NSFC ; National Key Research and Development Program of China ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Science Challenge Project ; Key Research Program of the Chinese Academy of Sciences ; opening project of State Key Laboratory of Explosion Science and Technology ; NSFC Basic Science Center Program for Multi-scale Problems in Nonlinear Mechanics
其他责任者Chen, Yan ; Dai, Lan-Hong
源URL[http://dspace.imech.ac.cn/handle/311007/91308]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Chen JX,Li T,Chen Y,et al. Ultra-strong heavy-drawn eutectic high entropy alloy wire[J]. ACTA MATERIALIA,2023,243:14.
APA 陈金玺,李统,陈艳,曹富华,汪海英,&戴兰宏.(2023).Ultra-strong heavy-drawn eutectic high entropy alloy wire.ACTA MATERIALIA,243,14.
MLA 陈金玺,et al."Ultra-strong heavy-drawn eutectic high entropy alloy wire".ACTA MATERIALIA 243(2023):14.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。