A lightweight refractory complex concentrated alloy with high strength and uniform ductility

被引：57

作者：

Jia, Yuefei ^{[1
,2
]}

Wang, Gang ^{[1
,2
]}

Wu, Shiwei ^{[3
]}

Mu, Yongkun ^{[1
,2
]}

Yi, Yun ^{[1
,2
]}

Jia, Yandong ^{[1
,2
]}

Liaw, Peter K. ^{[4
]}

Zhang, Tongyi ^{[5
,6
]}

Liu, Chain-Tsuan ^{[3
]}

机构：

[1] Shanghai Univ, Inst Mat, Shanghai 200444, Peoples R China

[2] Shanghai Univ, Zhejiang Inst Adv Mat, Jiashan 314100, Peoples R China

[3] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Hong Kong, Peoples R China

[4] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[5] Shanghai Univ, Mat Genome Inst, Shanghai 200444, Peoples R China

[6] Shanghai Univ, Shanghai Mat Genome Inst, Shanghai 200444, Peoples R China

来源：

APPLIED MATERIALS TODAY | 2022年 / 27卷

关键词：

Lightweight; Complex concentrated alloy; Alloy design; High strength; HIGH-ENTROPY ALLOYS; PRINCIPAL ELEMENT ALLOYS; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; LOW-DENSITY; LATTICE DISTORTION; HYDROGEN SORPTION; ROOM-TEMPERATURE; TITANIUM-ALLOYS; PHASE-STABILITY;

D O I：

10.1016/j.apmt.2022.101429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Advanced alloys with lightweight, gigapascal strength, and sufficient ductility are vitally crucial for engineering applications. However, the intrinsic conflicts between strength and ductility or strength and density cause a big challenge to improve the comprehensive performance of alloys. In the current study, we adopt a two-step method to overcome this trade-off by tailoring the atomic mixing of lightweight elements and refractory elements to form a lightweight refractory complex concentrated alloy (LRCCA). Then, a lightweight, high-strength, intrinsically ductile complex concentrated matrix (LRCCM) alloy is developed, modified with nano/submicron multicomponent intermetallic compound particles (MICPs). The developed MICPs-LRCCM exhibits a high yield strength, sufficient ductility and a relative low density (-5.9 g/cm(3)), as well as high specific strength of-230 MPamiddotcm3/g. High solution strengthening together with precipitation are simultaneously operated in the MICPs-LRCCM. Our results provide a guidance for designing high-performance lightweight alloys for structural applications. (C)& nbsp;2022 Elsevier Ltd. All rights reserved.

引用

页数：10

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