Effect of Mg on Flow Behavior of Al-Mg Alloys and Its Constitutive Modeling Using Finite Element Analysis

摘要

Al-Mg alloys are one of the most widely used materials for automotive and marine applications due to their relatively higher strength and superior corrosion properties in marine environment. However, with increasing magnesium content in these alloys, the engineering workability decreases. The flow behavior of AA5052 and AA5083 alloys were studied by performing the tensile test along the rolling direction at various temperatures and strain rates, ranging from room temperature (RT)-400 °C and 0.001-1 s~(-1) respectively, using Glee-ble? 3800 thermomechanical simulator to study the effect of Mg content on various state variables. These experiments were used to determine material model coefficients at different test conditions for both the alloys. Johnson-Cook (JC) material model was used to describe the material behavior with finite element simulations in commercial finite element analysis package ABAQUS~(TM). The simulation results based on a calibrated JC model depicted a close agreement with the experimental results.