TypeConference
TitleErosion wear resistance of laser cladding AlCr2FeCoNiNbx high-entropy alloy coatings
SourceAsiatrib 2018
AuthorX.L.Ji Y.Y. Bao J.H. Zhao P. Gu

Abstract

AlCr2FeCoNiNbx (x=0, 0.5, 1.0, 1.5, 2.0, x values in molar ratio) high-entropy alloy (HEA) coatings were fabricated on Q345 steel by laser cladding. The effects of annealing on microstructure and erosion wear resistance of the HEA coatings were studied. These HEA coatings present an erosion characteristic of ductile materials. With addition of Nb, the Vickers hardness of AlCr2FeCoNiNbx coatings increases due to the increase of volume fraction of Laves phase. Meanwhile, the mass loss rates decreased with the increase of Nb content. The erosion mechanism evolved from delamination to micro-ploughing with the Nb additions at 30° impact angle. 


Content

AsiaTrib (2018) pp. 3-5