Microstructure Evolution and FEM Prediction on AA6XXX Alloys

The microstructure evolution during the extrusion process of AA6XXX aluminum alloys is ofandextrudersfrominteresta significantgetting researchersbecause theeffectofthe grain structure on the extruded component properties. Several process and material parameters such as chemical composition, homogenization, temperature evolution, extrusion speed, geometries and quenching have a direct impact on the final grain size of extruded profiles. Because there are so many affecting elements, it is extremely challenging to forecast the microstructure evolution and, as a still required to understand and control the aluminum alloyresult, research activities are recrystallization behaviour. In this work, a methodology for the microstructural characterization of AA6XXX aluminum alloys is proposed. The methodology involves the experimental investigation of extrusion process, the AA6XXXaofdevelopmentgrain evolution during theprofilethe recrystallization model optimized to describe the AA6063 recrystallization behaviour and the simulation by means of finite element method of the final microstructure of the extruded profile.