Study on microstructure and properties of AlCoCrFeMoxNi HEA coatings prepared by laser cladding
High-entropy alloy coatings of AlCoCrFeMoxNi were prepared on Q235B hot-rolled steel surfaces by laser cladding in this paper.The phase structure,microstructure,microhardness,and electrochemical prop-erties of the coatings was tested.The effect of molybdenum(Mo)element on the coating's microstructure,hardness,and corrosion resistance was investigated.It was found that as the mole fraction of Mo element in-creases,a BCC2(body-centered cubic)phase is present,the hardness of the coatings increase,and the corro-sion resistant of the coatings increase first and then reduce.The AlCoCrFeMo0.8Ni coating has an average hard-ness of 462 HV,a corrosion potential of-0.676 V and a corrosion current density of 0.612 mA/cm2,displays good overall performance.
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