Investigation of the combined stress and strain situation in diffusion welded rectifying elements

摘要

During the post-bonding cooling process, and due to the differences in the thermal expansion coefficients of the bonded parts, thermal stresses and deformations arise in rectifying elements. The residual stresses and deformations may be the main factor in the subsequent technological treatments and operations. In early papers the regularities of the residual stress and strain situation in general, without examination of the stress distribution along the cross section of the rectifying element during the process of cooling, were observed. The subject of this paper is the use of the finite element method (FEM) and experimental data for investigation of the stress and strain kinetics of rectifying elements during the post-deposition welding cooling process.