research papers
A new method for determination of the stacking fault energy in face-centred cubic materials is presented, which utilizes in situ X-ray diffraction performed during the early stages of the plastic deformation of the sample. Additionally, this method gives information about the formation, widening and interaction of stacking faults at different applied stresses. The capability of this method is illustrated on highly alloyed austenitic steels with the transformation-induced plasticity effect, in which the plastic deformation is accompanied by martensitic transformation of austenite.