During a tensile test, a metal has a true strain = 0.10 at a true stress = 37,000 lb/in2 . Later, at a true stress = 55,000 lb/in2 , true strain = 0.2
During a tensile test, a metal has a true strain = 0.10 at a true stress = 37,000 lb/in2 . Later, at a true stress = 55,000 lb/in2 , true strain = 0.25. Determine the strength coefficient and strain-hardening exponent in the flow curve equation.