Modeling tensile strength of oblique layer functionally graded austenitic steel

Tensile strength of oblique layer functionally graded austenitic steel produced by electroslag remelting has been modeled. For a constant angle of oblique layer, tensile strength of the composite depends on the composition and number of layers. Tensile strength of the composite has been modeled based on tensile behavior of individual layers. By assuming a power-law relation for stress–strain curve of each layer, the differences between tensile strength of neighboring elements maybe related to the tensile strength of the composite by means of an additional parameter which is equal to the ratio of stress level differences to strain level differences of two adjacent elements at a given layer. Accordingly, tensile strength of the oblique layer functionally graded austenitic steel was determined via a numerical method. The obtained result is in good agreement with the experimental data.

Research highlights▸ Production of functionally graded steels by electroslag remelting. ▸ Modeling tensile strength of functionally graded steels with oblique layers. ▸ Combined iso-stress and iso-strain levels.