Irrecoverable deformation of tin in terms of the synthetic theory

The paper addresses the issue of the plastic and creep deformation of tin, a material with low melting point; main attention is focused on its plastic deformation and steady-state creep. The modelling of these deformations has been accomplished in terms of the synthetic theory of permanent deformation whose main peculiarity is only one constitutive equation governs both plastic and creep deformation. The stress-strain as well as strain-rate vs. stress diagrams constructed on the base of this theory show good agreement with experimental data.