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The microstructure of a spray deposited intermetallic compound alloy of Ni-Al-Mo system(Ni3Al-Mo intermetallic compound alloy) prepared by a spray atomization deposition was studied in detail by using optical metallography,XRD,DTA,SEM,TEM,HREM and computer simulation.The preform consists of uniform and equiaxial grains,ranging from 10-40 μm,with some microporosity.Besides the main phases of the matrix alloy γ’ and γ,Ni2Mo and Ni3Mo phases are also found within the γ network.A new Ni enriched phase in the γ phase was identified to have face-centered cubic structure with a lattice constant α=1.09 nm and space group Fm3m.
The microstructure of a spray deposited intermetallic compound alloy of Ni-Al-Mo system (Ni3Al-Mo intermetallic compound alloy) prepared by a spray atomization deposition was studied in detail by using optical metallography, XRD, DTA, SEM, TEM, HREM and computer simulation.The preform consists of uniform and equiaxial grains, ranging from 10-40 μm, with some microporosity.Besides the main phases of the matrix alloy γ ’and γ, Ni2Mo and Ni3Mo phases are also found within the γ network.A new Ni enriched phase in the γ phase was identified to have face-centered cubic structure with a lattice constant α = 1.09 nm and space group Fm3m.