Evaluation of Deformation Strengthening in Modern Sheet Metals

Abstract

Deformation strengthening i.e. strain hardening is very significant phenomenon in almost all metal materials especially in contemporary sheet metal materials. It consists in the increase of stress properties of strength, and appears as a consequence of realized plastic deformation. This extensive research includes 8 sheet metals of different materials. There are 4 steel sheets: low carbon steel DC04 (thickness 0.8 mm), austenitic stainless steel X5CrNi18-10 (2,0 mm), austenitic stainless steel X5CrNiMo17-12-2 (2,0 mm) and spring steel 51CrV4 (0.6 mm). Also there are sheets of following materials: brass CuZn37 (thickness 0.8 mm), Al alloy AlMg3 (1.5 mm), Al alloy AlCu4Mg1Mn (1.0 mm) and pure copper Cu-DHP (0.8 mm). The deformation strengthening was investigated through the strengthening curves and the exponent of the deformation strengthening i.e. strain hardening exponent.