RELAXATION OF THE RESIDUAL STRESSES PRODUCED BY PLASTIC DEFORMATION

The relaxation of residual stresses in cold-rolled strips of the alloy AA5083 and drawn bars of the steels 1.1141 and 1.7015 depending on the important parameters of the thermal and mechanical relaxation process were investigated. The measurement of residual stresses and the control of their complete or partial removal were performed using the deflection method and x-ray diffraction, The residual stresses are very unstable and intensely affect the changes of shape and dimensions when their balance is disturbed. This instability serves to their relaxation. The performed analyses and dependences enable the efficient planning and control of the relaxation processes.