분말야금법을 이용한 Ti-Ni 섬유강화 형상기억복합재료 특성에 관한 연구

In the present paper, We have tried to reconfirm the "Interlligent" material properties using both the sintered TiNi/A(1100) matrix composite by powder metallurgy method. By using these specimen, Shape meorystrengthening effect in tensile strengthand fatigue crack propagation above inverse transformation temperature of TiNi fiber were investigated. More over, by SEM obsevation, the effect of the residual stress at the interface between A1 matrix and TiNi fiber and some brittle precipitation layers such as inter metallic compounds on fracture mechanisms was metallurgically discussed.discussed.