Effect of Temperature on the Stress-Strain Response of the Fe–Cr–Ni Alloy

The effect of temperature on the deformation response of Fe-18% Cr-10% Ni polycrystalline alloy is studied in this work. The stress-strain curve of the alloy is shown to be changed significantly with decreasing temperature due to a strain-induced γ-α’ phase transition. To calculate the stress-strain curves, the correction coefficients taking into account the volume fraction of the martensitic phase are added to the Ludwigson equation. A comparative analysis reveals the good correlation between experimental and theoretical stress-strain diagrams of the Fe–Cr–Ni alloy in both high and low temperature ranges.