Ausforming treatments at different temperatures were applied to a medium CSi rich carbide free bainitic steel, and the role of transformation plasticity on evolution microstructure is discussed. Three ausforming selected prior isothermal bainite 325 °C. Deformation was above start temperature, BS, (600 °C), below BS (400 temperature (325 °C). A combination high-resolution dilatometry, XRD, SEM,...