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The microstructure,tensile properties at 20—950℃ and creep rupture properties at 700-900℃ in a Ni_3Al-Fe based alloy after high temperature deformation have been studied.Theresults show the microstructure of the alloy is composed of γ′-and β-phases.The grain sizeand yield strength of the alloy is stable when the temperature≤600℃,and it is ductile athigh temperature.The creep of the alloy at 700—900℃ is controlled by the climbing of dislo-cations,and the activation energy for creep is 439 KJ/mol with a stress exponent of 4.
The microstructure, tensile properties at 20-950 ° C and creep rupture properties at 700-900 ° C in a Ni_3Al-Fe based alloy after high temperature deformation have been studied. The results show the microstructure of the alloy is composed of γ’-and β- the grain size and yield strength of the alloy is stable when the temperature ≦ 600 ° C and it is ductile athigh temperature. The creep of the alloy at 700-900 ° C is controlled by the climbing of dislo-cations, and the activation energy for creep is 439 KJ / mol with a stress exponent of 4.