Einfluß des Kohlenstoffgehalts, der Vorverformung und der Korngröße von Kohlenstoffstählen auf die inhomogene Scherverformung

The work of deformation or energy consumption during shearing of two plain carbon steels with 0.1 wt% and 0.45 wt% carbon was determined as a function of strain rate. The steel with 0.1 wt% carbon was predeformed by swaging. A predeformation leads to minor energy consumption. The grain size of the steel with 0.45 wt% carbon was varied by different annealing treatments. The work of deformation increase with rising grain size. This effect seems to be initiated by Lüders strain. In the steel Ck 10 only homogeneous shearing or deformation shear zones could be observed, while in the steel Ck 45 transformation shear zones occured additionally.