摘要: Severe plastic deformation (SPD) can lead to emergence of microstructural features and properties in materials which are fundamentally different from the ones well known for conventional cold deformation. In particular, instances unusual phase transformations resulting development highly metastable states associated with formation supersaturated solid solutions, disordering or amorphization their further decomposition during heating, high thermal stability SPD-produced nanostructures, paradox strength ductility some SPD-processed metals alloys discussed.