International Seminar on Mechanics and Mechanisms of Solid-Solid Phase Transformations
J. Phys. IV France 06 (1996) C1-265-C1-274
Martensitic Transformation and Residual Stresses after Thermomechanical Treatment of Heat Treatable Steel 42CrMo4 (SAE 4140)A. Weise and G. Fritsche
Technische Universität Chemnitz-Zwickau, Fakultät für Maschinenbau und Verfahrenstechnik, Professur Werkstoffe des Maschinenbaus, 24300-09107 Chemnitz, Germany
The influence of thermomechanical deformation on the residual stresses caused by quenching in bar shaped specimens of heat treatable steel 42CrMo4 has been investigated using a mechanical method for determining the distribution of residual stresses of the first kind. The results obtained show that the residual stress distribution after quenching is affected by the strengthening and softening of the austenite as a result of deformation and recrystallization and the modified transformation behaviour in martensite stage. An attempt is made to discuss qualitatively the influence of these changes on the generation of residual stresses as compared to results obtained after conventional hardening.
© EDP Sciences 1996