Residual stresses in cold-deformed thin items and sheet tempered metal

Using solutions of the mathematical theory of plasticity for a thin elastoplastic layer, four theoretically possible types of distributions of residual stresses over the thickness of cold-deformed items and tempered sheet metal are determined. The results are obtained by studying different types of diagrams presenting the dependence of the stress intensity on the deformation intensity. The obtained theoretical dependences are confirmed by experimental studies. The effect of the residual stresses on the mechanical properties and formability of sheet cold-rolled steel is considered.