Laser deposition of refractory Mo-Ni alloys Available to Purchase

Mo-Ni alloys have wide applications in the nuclear and aeronautical industries. It is of great technological interests to investigate laser deposition Mo-Ni alloy for further laser direct manufacturing near net shape Mo-Ni components. The research work contains the characteristics study of overlap multi-pass laser cladding of Mo-Ni alloys, the microstructure, hardness and mechanical property analysis. Refractory Mo-Ni alloys Mo48Ni52 and Mo70Ni30 were deposited by laser via coaxial feeding of pure powder blend of Mo and Ni. The Mo48Ni52 alloy is composed of Ni solid solution 、 NiMo phase 、 Ni₃Mo phase and Ni₄Mo phase while the 70Ni30 alloy consists of Mo solid solution and NiMo phases. The average hardness of Mo48Ni52 and Mo70Ni30 alloys are respectively HRA77.6 and HRA75.2.Cracking occurs in multi-layer laser deposition of both Mo48Ni52 and Mo70Ni30 alloys.High-temperature compression tests were performed at 900°C. The highest practical force of Mo48Ni52 is 7605N, the elastic ratio is 11816.74N/mm² and brittleness compression strength is 608N/mm². The highest practical force of Mo70Ni30 is 12417N, the elastic ratio is 10296.27N/mm² and brittleness compression strength is 990N/mm².