In situ TiN-reinforced CoCr2FeNiTi0.5high-entropy alloy composite coating fabricated by laser cladding

被引：30
作者：
Guo, Ya-Xiong [1 ]
Liu, Qi-Bin [1 ,2 ]
Shang, Xiao-Juan [1 ]
机构：
[1] Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China
[2] Guizhou Prov Key Lab Mat Struct & Strength, Guiyang 550025, Peoples R China
来源：
RARE METALS | 2020年 / 39卷 / 10期
基金：
中国国家自然科学基金;
关键词：
TiN particle reinforced; High-entropy alloy; Semi-coherent interface; Laser cladding; HIGH-ENTROPY ALLOY; SLIDING WEAR BEHAVIOR; MECHANICAL-PROPERTIES; HEAT-TREATMENT; MICROSTRUCTURE;
D O I：
10.1007/s12598-018-1194-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fcc structural CoCr(2)FeNiTi(0.5)high-entropy alloy (HEA) composite coating with TiN particles reinforced was acquired by laser cladding on the commercial 904L stainless steels. The results show that phase structure is mainly composed of fcc solid solution and TiN phases. The coating exhibits excellent structural stability below 850 degrees C. The microstructure consists of irregular dendrite and TiN particles. Transmission electron microscopy (TEM) results reveal that the close-packed plane of fcc phase is (111) with interplanar spacing of ~ 0.208 nm. The interface between TiN and fcc matrix is semi-coherent. And the angle of boundary between dendrite and matrix is ~ 65 degrees. The hardness and corrosion resistance of coating have much improvement compared with those of substrate.
引用
收藏
页码：1190 / 1195
页数：6
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