Simulation of impact energy in functionally graded steels

Charpy impact energy of functionally graded steels produced by electroslag remelting composed of graded ferritic and austenitic layers together with bainite or martensite layers has been studied. Number and type of constituent phases of composites are the most important factors affecting impact energy in crack divider configuration. In crack arrester configuration, this mostly depends on the notch tip position and the distance of notch tip with respect to the bainite or martensite layers. Finite element method has been conducted to simulate impact energy of composites. A relatively good agreement between experimental results and the results obtained from simulation was observed.