Severe Plastic Deformation of Steels: Structure, Properties and Techniques

Abstract

This article focuses on the results from recent studies of severe plastic deformation of various types of steels, mainly, austenitic, ferritic and ferritic-pearlitic, in temperature ranges of hot, warm and cold deformation. The principles of formation of various types of structures are considered: 1) dynamically recrystallized and dynamically recovered structures during severe hot deformation. 2) dynamically recovered and submicrostructures during severe warm deformation. 3) submicro- and nanostructures during severe cold deformation. The favorable effect of phase transformations and microalloying in steels on the formation of nanostructures is discussed. The methods and techniques of severe plastic deformation for processing of steels and favorable factors for attaining large plastic strains are considered.