Autowave description of plasticity of materials with an unstable phase structure at the macroscale level

We consider the regularities of a plastic flow in materials with strain-induced phase transformation in titanium nickelide and trip steel as examples. The experimental analysis of plastic deformation processes has been carried out using the technique of digital correction of speckle images, which makes it possible to describe quantitatively the behavior of plasticity fronts associated with phase transformation in the given materials. The mechanisms of formation of the Lüders fronts as well as the Portevin–Le Chatelier fronts at different stages of the plastic flow are considered.