Prediction of Hot Formability of AA7075 Aluminum Alloy Sheet

A uniaxial high-temperature tensile test of an AA7075 aluminum alloy sheet was conducted using established induction heating system. Five different types specimens were designed to obtain the stress–strain curves at forming temperatures and strain rates so as construct modify Johnson–Cook constitutive model. The stress states numerically simulated ABAQUS finite element software, triaxiality equivalent fracture parameters extracted. ductile model constructed, error evaluation scheme determine best failure parameter combination. Based on obtained model, models paths theoretical limit obtained. results Nakazima simulation are mostly consistent, which confirms reliability constructed curves.