Plasticity and Deformation in Metals

This lecture covers the microscopic mechanisms of low temperature plasticity, plastic flow in single crystals, work hardening, plasticization criteria, and the mechanics of plastic deformation. It also discusses the critical stress state triggering plastic strain, deviatoric stresses in plasticity, and the von Mises criterion. The instructor explains the isotropic assumption, kinematic hardening, and the evolution of the load surface. The lecture delves into the significance of the coefficient k, the shape of the load surface, and the estimation of elastic limits under different stress conditions. It also explores obstacles to dislocation movements, isotropic and kinematic hardening, and the concept of equivalent deformations in plasticity.