Ultra-strong heavy-drawn eutectic high entropy alloy wire

doi:10.1016/j.actamat.2022.118515

IMECH-IR > 非线性力学国家重点实验室

	Ultra-strong heavy-drawn eutectic high entropy alloy wire
	Chen JX(陈金玺)1,2 ; Li T(李统)1,2; Chen Y(陈艳)1,2 ; Cao FH(曹富华)1,2 ; Wang HY(汪海英)1,2 ; Dai LH(戴兰宏)1,2,3
通讯作者	Chen, Yan(lhdai@lnm.imech.ac.cn) ; Dai, Lan-Hong(lhdai@lnm.imech.ac.cn)
发表期刊	ACTA MATERIALIA
	2023-01-15
卷号	243 页码:14
ISSN	1359-6454
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.
关键词	Eutectic high entropy alloy wire Mechanical properties Gradient heterogeneous lamella structure Cross-slip
DOI	10.1016/j.actamat.2022.118515
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000899583800003
关键词[WOS]	HIGH-DUCTILITY ; HIGH-STRENGTH ; MECHANICAL-PROPERTIES ; CRYOGENIC STRENGTH ; TENSILE PROPERTIES ; BEHAVIOR ; STEEL ; DISLOCATION ; PLASTICITY ; MICROSTRUCTURE
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
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]
项目资助者	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
论文分区	一类
力学所作者排名	1
RpAuthor	Chen, Yan ; Dai, Lan-Hong
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/91309
专题	非线性力学国家重点实验室
作者单位	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.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, 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.

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