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The influence of different parameters on the shape memory effect and the transformation temperatures has been determined. In this respect it has been found that annealing at an intermediate temperature, after hot rolling, yields a maximum shape recovery. It is believed that partial removal of the work hardened structure is necessary while prevention of permanent slip in the matrix is essential, to obtain good shape recovery. Also the influence of strain cycling and thermal cycling is determined. The shape memory effect increased after each strain cycle and the amount of martensite formed increased after each thermal cycle. Both observations can be accounted for by an increased nucleation rate. Also the heating and cooling rate are important parameters in this respect.

Influence of Thermomechanical Treatments and Cycling on The Martensitic Transformation and Shape Recorvery of Fe-Mn-Si Alloys