Phase Field Simulation of AA6XXX Aluminium Alloys Heat Treatment

Heat treatment has a significant impact on the microstructure and mechanical properties of Al-Mg-Si alloys. The present study presents first Phase-Field modelling approach recrystallisation grain growth mechanism during annealing. It focuses precipitate fraction, radius, Mg-Si concentration in matrix phase, which are used as input data for calculation yield strength hardness at end different ageing treatments. Annealing artificial simulations have been conducted MultiPhase-Field based MICRESS@ software, while ThermoCalc@ software to construct pseudo-binary Al-Mg phase-diagrams atomic-mobility databases MgxSiy precipitates. Recrystallisation simulation estimates kinetics, growth, interface mobility with presence/absence secondary particles, selecting annealing temperature 400 °C previously subjected cold rolling. pinning force particles decelerates overall time, causing slight decrease final radius due reduction mobility. examines temperatures (180 200 °C) two distinct ternary systems (Al-0.9Mg-0.6Si/Al-1.0Mg-1.1Si wt.%) considering energy chemical free driving precipitation. combination Deschamps–Brechet model predicted under-ageing condition 180 peak-ageing treatment.