An AlCoCrFeNi2.1 high-entropy alloy coating with uniform microstructure and high hardness

被引：9
|
作者：
Zhang, Li [1 ]
Ji, Yan [1 ]
Ye, Qilu [2 ]
Yang, Bin [1 ]
机构：
[1] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
[2] Chaohu Univ, Anhui Engn Res Ctr High Efficiency Intelligent Ph, Hefei 238000, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 348卷
关键词：
Extreme high-speed laser cladding; High entropy alloy; Coating;
D O I：
10.1016/j.matlet.2023.134636
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Anisotropy in a thicker coating due to different cross-sectional microstructures is usually a major concern when used for an engineering application. Here, we report that extreme high-speed laser cladding (EHLC) can fabricate coating with thickness of dozens and hundreds microns, whose microstructure and hardness are uniform. Due to lower heat input and rapid cooling, the microstructures with same growth direction under the EHLC are confirmed to connect each other. Based on our present investigation, the EHLC technique opens new avenues for fabricating coatings especially for high-entropy alloy coatings in which uniform microstructure and hardness are required.
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页数：5
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