THE COMPARISON OF THE MICROSTRUCTURE AND THE MECHANICAL CHARACTERISTIC OF AUSTEMPERED DUCTILE CAST IRON AND STEEL SUBJECT TO DYNAMIC DEFORMATION USING THE TAYLOR TEST

The article attempts to compare the resistance of austempered ductile cast iron and S215 steel to dynamic loads. The samples were subject to research using the Taylor test methodology at different speeds of deformation, in order to determine the characteristics of the material (Fig. 1). There was a significant increase in hardness in the highly deformed areas, and changes in the microstructure indicating the strengthening of the material. It was determined that the studied properties are comparable in steel and in iron after heat treatment on the basis of assessment of dynamic yield limit and the strengthening coefficient. The results of both materials may be used to assess their suitability for the production of equipment operating under extreme load conditions.

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