Abstract: The deformation of the γ-phase and its effect on the shape memory effect of a Ni-Al-Fe-B alloy were studied by means of optical and SEM metallographic exanllnations,microhardness measurement and compression test.It was found that a few γ-phases deformed coordinatedly in a slip manner when the stress induced martensitic transfonnation took plaee in the matrix at a low stress.The shape recovery ratio decreased by stages,with the increase of the strain.When the strain was 4%,the shape recovery ratio retained 75%.

Key words: phases, deformation, memory, alloys, effects