Evolution of the microstructure and properties of laser-clad FeCrNiCoBx high-entropy alloy coatings

被引：59
|
作者：
Zhang, C. [1 ,2 ]
Chen, G. J. [1 ]
Dai, P. Q. [1 ,3 ]
机构：
[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[2] Fujian Special Equipment Inspect & Res Inst, Fuzhou 350008, Peoples R China
[3] Coll Fujian Univ Technol, Dept Mat Sci & Engn, Fuzhou 350108, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2016年 / 32卷 / 16期
关键词：
High-entropy alloy; Laser cladding; Corrosion; Borides; Phase transformations; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; CHROMIUM; BORIDES; PHASES; MN;
D O I：
10.1080/02670836.2015.1138035
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
FeCrNiCoBx high-entropy alloy coatings were prepared by laser cladding, and the effects of boron addition on the microstructure, hardness and corrosion resistance of the coatings were studied. Results showed that the coatings comprised a simple FCC solid solution with boride precipitation. When 0.5x1.0, (Cr, Fe)(2)B with an orthorhombic structure was found in the coatings, and the hardness and corrosion resistance of the coatings were enhanced by increasing boron content. As x approached 1.25, the borides changed from orthorhombic (Cr, Fe)(2)B to tetragonal (Fe, Cr)(2)B, which deteriorated the corrosion resistance of the coatings. Stacking faults found in (Cr, Fe)(2)B may be caused by the phase transformation of borides.
引用
收藏
页码：1666 / 1672
页数：7
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