Ultrafine-Grained Stainless Steels after Severe Plastic Deformation

The aim of the present review is to summarize recent achievements in development ultrafine-grained austenitic/ferritic stainless steels processed by large strain deformation. Various aspects microstructure evolution and its effect on properties are considered. paper starts from an overview various methods deformation that successfully used for producing metallic materials. Then, structural mechanisms responsible grain refinement during plastic considered discussed viewpoint their efficiency subsequent recrystallization behavior. Finally, some physical mechanical observed. It concluded microstructures severe results a kind continuous dynamic recrystallization. Namely, misorientations among strain-induced cells/subgrains progressively increase up typical values ordinary boundaries. Following rapid reduction at relatively small strains, size gradually approaches final value, which depends alloying/phase content processing conditions. An number density interface/grain boundaries initial state significantly accelerates kinetics working.