Ultra-severe plastic deformation for room-temperature superplasticity and superfunctionality

Abstract. Ultra-severe plastic deformation (ulta-SPD) is a terminology used for the introduction of extremely large shear strains (over 1000) to material so that thickness sheared phases geometrically reaches subnanometer level. Under such extreme shearing conditions, new nanostructured with unique properties are formed even from immiscible systems. Various metallic alloys and ceramics were developed by this concept different applications as room-temperature superplasticity, hydrogen storage, photocatalytic production, carbon dioxide conversion, etc. This article reviews recent advances regarding ultra-SPD focus on low-temperature which was reported first time at room temperature in aluminum magnesium alloys.