Residual stresses analysis methodology during cyclic plastic deformation carbon steel

Abstract

One of the trends in development of new metal materials, respectively the increase of their mechanical properties, is the use of cyclical plastic deformation. Evaluation of resulting properties of given materials conducted only at the end of the process does not, however, enable to phase individual steps of the cyclical process in order to optimize technological parameters. A very suitable approach to describe the behaviour of materials during repeated plastic deformation seems to consist in a non-destructive analysis of residual stresses. The paper describes the method of analysis of residual stress based on the Barkhausen noise which is applied in the process of increasing mechanical properties of steel plates using the DRECE (Dual Rolling Equal Channel Extrusion) method [1-2].