An annealed AISI 1018 steel specimen has a tensile modulus of 210 GPa, a strength coefficient of 620 MPa and a strain-hardening exponent of 0.25 (assuming a power-law relationship ????̃=????????̃ ???????? for σ>σy). What permanent deformation must be applied to increase the 0.2% offset yield strength by 40%?

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Given E 210BIpc K 620Mpa n 025 E 21010 3 Mpg We have power l... View the full answer