Residual deformation of aircrafts aluminum parts at hardening

The computational modeling of the hardening process with the account of the effect of submersion was carried out. The modeling was performed with the account of temperature dependence of the material characteristics and the convective heat transfer coefficient. For stability of the numerical solutions with high gradients it was used the relation between the time step, thermal diffusivity and the characteristic size of the grid. There were received the distributions of thermal _ fields and stresses in the workpiece in the process of submersion and cooling in hardening medium, distribution of the residual hardening stress and deformation after hardening. The influence of the submersion direction of work parts in hardening medium on mode and value of the residual stress was revealed. To proof the results of the computational modeling, the seria od the full-scale experiments was held. The experimental results appeared to be in good agreement with theoretical calculations.