Martensitic Transformation: Plasticity and Hysteresis

This lecture delves into the plasticity and hysteresis phenomena associated with the martensitic transformation, focusing on the evolution of properties and the plastic deformation induced by phase transformation. It covers topics such as lenticular platelets, stress-strain curves, shape memory effects, and the pseudo-elastic effect. The instructor explains the critical constraints, influence of applied stress, and the reversible nature of deformations. By examining the energy balance and friction energy, the lecture explores the hysteresis cycle of an austenite-martensite transformation, emphasizing the complex crystallographic relationships between parent and transformed phases.