Microstructure and mechanical properties of Fe3Al based alloy fabricated by laser metal deposition

被引：3
|
作者：
Xu, Shurong [1 ]
Wang, Jiang [1 ,2 ]
Wang, Zhen [1 ]
Sui, Qingxuan [1 ]
Zhao, Fengjun [1 ]
Gong, Le [1 ]
Liu, Bo [1 ]
Liu, Jun [1 ]
Liu, Gang [3 ]
机构：
[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] State Key Lab Nickel & Cobalt Resources Comprehen, Jinchang 737100, Peoples R China
[3] Cent South Univ, Xiangya Hosp, Dept Gen Surg, Changsha 410008, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 306卷
基金：
中国国家自然科学基金;
关键词：
Iron aluminides; Laser processing; Microstructure; Mechanical properties; COMPOSITES;
D O I：
10.1016/j.matlet.2021.130919
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
As a neat-net-shape processing technology, Laser Metal Deposition (LMD) is well-suited for the preparation of intermetallic alloys. In this study, Fe3Al and Fe3Al-WC alloys were successfully fabricated by LMD. The effects of WC on the phase composition, microstructure and mechanical properties of the as-fabricated samples were investigated. The results showed that the addition of WC particles facilitated the formation of W-containing carbides and resulted in grain refinement. Taking advantage of solid solution strengthening and fine grain strengthening, the Fe3Al-WC composite alloy exhibited an improved microhardness (395.50 HV0.3) and compressive yield strength (1262 +/- 13 MPa) compared with pure Fe3Al alloy.
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页数：4
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