Effect of pulsed heat treatment on microstructure of rapidly quenched TiNiCu alloys

In the present research, TiNiCu alloys were produced in amorphous state by melt spinning technique at the cooling rates around 10⁶ K/s. Crystallization of the alloys was performed by single pulse of electric current or laser radiation with duration from 10^-1 s to 10^-6 s. TEM investigations shown that the martensite transformation B2-B19 occurred after all heat treatment regimes but average grain size varied from 500 nm to 80 nm with decreasing the time of heat exposure. The effect of thermal treatment on structural parameters, morphology and transformation temperatures of the alloys is discussed.