Impact of homogenization on particles in the Al–Mg–Mn alloy AA 5454 – Experiment and simulation

The purpose of the present work is to understand the evolution of microstructure and microchemistry during homogenization of the Al–Mg–Mn alloy AA 5454 (Al Mg3 Mn). It has previously been shown that a two-stage homogenization practice may alter the particles state and, in turn, facilitate recrystallization of the coiled hot strip of alloy AA 5454. In this paper we aim at reproducing and elaborating earlier results by means of a combined experimental and simulation-based approach. The evolution of the particle state during homogenization annealing is tracked with a variety of experimental characterization methods and simulated with microchemistry simulation tools to analyze the changes in solute level and precipitation.

► Understand the evolution of particles during homogenization of alloy 5454.
► New two-stage homogenization practice to facilitate recrystallization of alloy 5454.
► Valuable combination of experimental characterization and computer simulation.
► Potential for design of homogenization practices for improved materials properties.