Microstructure and mechanical properties of a refractory AlMo0.5NbTa0.5TiZr high-entropy alloy manufactured by laser-directed energy deposition

被引：14
|
作者：
Su, Bing [1 ,2 ]
Li, Jia [2 ]
Yang, Chen [2 ,3 ]
Zhang, Yansong [1 ,2 ]
Li, Zhuo [2 ,3 ]
Zhang, Yihe [1 ,2 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[2] Natl Engn Lab Addit Mfg Large Met Components, Beijing 10091, Peoples R China
[3] Beihang Univ, Res Inst Frontier Sci, Beijing 100191, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 335卷
关键词：
Additive manufacturing; Microstructure; Mechanical properties; Refractory high-entropy alloy; METAL-DEPOSITION; ALUMINUM;
D O I：
10.1016/j.matlet.2022.133748
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the AlMo0.5NbTa0.5TiZr alloy was successfully manufactured by laser-directed energy deposition (LDED) using element powder blends. The microstructure and mechanical properties of the L-DED alloy have been compared with the alloy prepared by vacuum arc melting (VAM). The L-DED alloy consists of rod-shaped equiaxed dendrites. The interdendritic HCP phase content of the L-DED alloy is much higher than that of the VAM alloy. The L-DED alloy has the same superior high-temperature strength as the VAM alloy. Due to the precipitation strengthening, the microhardness of the L-DED alloy has a better performance than the VAM alloy.
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页数：4
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