A model of stress induced martensitic transformation in Fe-Ni-C alloy

A model for the stress induced martensitic transformation in zirconia ceram ics was refined and extended to investigate the process of stress induced m artensitic transformation in an Fe-Ni-C alloy in compression. The relations hips between the amount of martensite transformed, the volume change, and t he longitudinal and transverse strains caused by the transformation, were p redicted by the model and confirmed by experiment. According to the model, under uniaxial compression the grains with orientations dose to < 100 > dir ection will preferentially transform to martensite. A consequence of this p referential transformation was the prediction of the development of a textu re in the remaining austenite at low fractions of the stress induced marten site (< 30%). The predicted texture in compression has been confirmed by X- ray diffraction. (C) 1999 Elsevier Science S.A. All rights reserved.