期刊
JOURNAL OF THERMAL SPRAY TECHNOLOGY
卷 20, 期 5, 页码 1049-1055出版社
SPRINGER
DOI: 10.1007/s11666-011-9626-0
关键词
annealing; high-entropy alloys; laser cladding; microstructure; properties
资金
- Program for Innovative Research Team in Anhui University of technology
The content of each constituent element in the newly developed high-entropy alloys is always restricted in equimolar or near-equimolar ratios to avoid the formation of complex brittle phases during the solidification process. In this article, a high-entropy alloy coating of 6FeNiCoCrAlTiSi has been prepared by laser cladding and subsequently annealed at 500, 750, 1000, and 1150 A degrees C for 5 h. Surprisingly, the coating has a simple BCC solid solution phase with high microhardness, good resistance to softening, and high electrical resistivity properties. After annealing < 750 A degrees C, the coating shows high thermal stability, the electrical resistivity decreases slightly and the microhardness almost remains unchanged. After annealing above 750 A degrees C, the microhardness of the coating slowly decreases with the decomposition of the supersaturated BCC solid solution.
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