Fracture Mechanisms of Austenitic Steel Caused by Dynamic Tests

The article is focused on the analysis of fracture mechanisms of specimens made of austenitic steel, which have been subjected to dynamic tests. Austenitic stainless steels are characterized as high corrosion resistant materials with high bio-tolerance and relatively high strength. They are made by cold working, where plastic deformation occurs and they are deformed especially by slipping and twinning. Deformed regions are characterized by deformation twins and slip deformation. Specimens were used in two states, in the initial state and after chemical-thermal treatment. Dynamic tests to which specimens were subjected were the impact test and the three-point bending test. Fracture areas were evaluated by scanning electron microscope.