METHOD TO PRODUCE INTERMETALLIC COMPOUND NiAl Russian patent published in 2014 - IPC B22F3/23 

FIELD: metallurgy.

SUBSTANCE: method to produce an intermetallic compound Ni₃Al includes preparation of a powder mix of nickel with aluminium of stoichiometric 3Ni+Al composition, its placement in a die mould, heating of the die mould for initiation of the reaction in the mixture for self-propagating high-temperature synthesis SHS of the intermetallic compound Ni₃Al in the mode of thermal explosion of the mixture and compaction for plastic deformation of the intermetallic product of the SHS reaction. The SHS reaction product is compacted with applied pressure of pressing to 400-500 MPa with time delay of 1-2 seconds at the moment of thermal explosion with extrusion of the SHS reaction product via one or several calibrated holes in the lower part of the die mould. The die mould has conical or cylindrical shape.

EFFECT: specified intermetallic compound has higher strength and plasticity.

2 cl, 9 dwg, 3 tbl