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

被引：56
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.
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页数：10
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