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FeCoCrNiAlB_x(x=0,0.25,0.50,0.75)coatings were prepared by laser cladding to study the effects of boron on the structure and properties of high-entropy alloys coatings.The microstructure,microhardness,and wear resistance properties of the samples were investigated by scanning electron microscopy,X-ray diffraction,metallographic micro-hardness test,and friction-wear test,respectively,and the mechanism of the wear behavior was also analyzed.The results showed that the high-entropy alloys consisted of BCC phase and eutectic structure,which contained FCC phase and M_2B.With boron addition,the content of BCC phase increased while that of eutectic structure decreased.The wear resistance of the high-entropy coatings was considerably improved with increasing addition of boron,and accordingly,the FeCoCrNiAlB_(0.75) coating showed the best wear resistance.
The microstructure, microhardness, and wear resistance properties of the samples were investigated. by scanning electron microscopy, X-ray diffraction, metallographic micro-hardness test, respectively, and the mechanism of the wear behavior was also analyzed. The results showed that the high-entropy assembly consisted of BCC phase and eutectic structure, which contained FCC phase and M_2B.With boron addition, the content of BCC phase increased while that of eutectic structure decreased. The wear resistance of the high-entropy coatings was considerably improved with addition of boron, and accordingly, the content of FeCoCrNiAlB_ ( 0.75) coating showed the best wear resistance.