Effect of Titanium Content on Microstructure and Properties of FeWCrMnCoCuTix High Entropy Alloy Coating Prepared by Laser Cladding

摘要

To obtain the coating with excellent properties, FeWCrMnCoCuTi_x (x=0.2, 0.4, 0.6) high entropy alloys coating on 45 steel were prepared by laser cladding. By means of OM, XRD and microhardness tester, the effect of Ti content on microstructure and properties of coating is investigated. The experimental result shows that the phase composition of HEAs coating is simple body-centered cubic and face-centered cubic. The microstructure of these alloys is mainly dendrite crystal with grains were fine and uniform. When Ti content increases to x=0.4, the hardness of the coating reaches a maximum (639HV_(0.2)).