The directional array TiN-reinforced AlCoCrFeNiTi high-entropy alloy synthesized in situ via magnetic field-assisted laser cladding

Abstract Recent studies have shown that ceramic particles reinforced high entropy alloy (HEA) has attracted increased attention due to their excellent strength and wear resistance. In this work, the directional array TiN-reinforced AlCoCrFeNiTi HEA coating was synthesized via magnetic field-assisted laser cladding. Besides, the wear resistance of HEA coating was systematically investigated. The atomic structure, ideal adhesion work (Wad) and electronic structure of the interface between matrix and TiN were calculated by first principles method. The results show that the microstructures of in-situ TiN display a “cross” shape of the directional array, and a coherent interface in TiN (200)/(Ni, Co)Ti2 (511) and the high bonding strength between TiN and BCC improve the wear resistance of HEA coating.