A lightweight Al0.8Nb0.5Ti2V2Zr0.5 refractory high entropy alloy with high specific yield strength

被引：28
作者：
Jiang, Wentao [1 ]
Wang, Xiaohong [2 ]
Li, Siying [2 ]
Ma, Tengfei [2 ]
Wang, Ye [1 ]
Zhu, Dongdong [2 ]
机构：
[1] Harbin Univ Sci & Technol, Sch Mat Sci & Chem Engn, Harbin 150004, Peoples R China
[2] Quzhou Univ, Key Lab Air Driven Equipment Technol Zhejiang Prov, Quzhou 324000, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 328卷
基金：
中国国家自然科学基金;
关键词：
Refractory high entropy alloy; Microstructure; Compressive properties; Specific yield strength; Hardness; MECHANICAL-PROPERTIES; MICROSTRUCTURE;
D O I：
10.1016/j.matlet.2022.133144
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel low density Al0.8Nb0.5Ti2V2Zr0.5 refractory high-entropy alloy with dual-phase structure was prepared by vacuum arc melting. The microstructure is composed of BCC solid solution matrix phase and a few C14-Laves phase. The alloy has a low density of 5.35 g/cm(3) and a high hardness of 5.86 GPa. The compressive yield strength achieved 1418 MPa at room temperature and reached 931 MPa at 873 K and then dropped to 760 MPa at 1073 K. Compared with Inconel 718 superalloy and other refractory alloys, the specific yield strength at different temperatures and the density of the Al0.8Nb0.5Ti2V2Zr0.5 alloy are more excellent.
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页数：4
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