Abstract
CoCrFeNiMnTix (x = 0.5, 1.0, 1.5, 2.0 in atomic ratio) high entropy alloy (HEA) coatings were prepared on 304 stainless steel by laser cladding. Experimental results showed that the CoCrFeNiMnTix HEAs constituent phase evolved from a single FCC phase for the HEA to FCC + BCC + Intermetallic + Laves phases with the addition of Ti element. The CoCrFeNiMnTix coatings exhibited an increasing microhardness from 412.42 HV to 573.97 HV. Accompanying the increase in microhardness, the wear resistance was proportional to the hardness of the coating, which met Archard’s relationship. In addition, the corrosion resistance of the CoCrFeNiMnTix coatings displayed an increased tendency firstly and then decreased with the addition of Ti element. And, the HEA coating with x = 1.0 possessed the highest corrosion resistance as indicated by the lower corrosion current density, high charge transfer resistance and high pitting potential.
Acknowledgments
The authors acknowledge to financial support from the National Key Research and Development Program of China (No. 2016YFB1100204), the Science and Research Project of Liaoning Province (No. LJKQZ2021050) and the Shenyang Science and Technology Funded Project (No. 22-101-0-16 and No. 19-109-1-03).
Disclosure statement
No potential conflict of interest was reported by the authors.