Modelling of weldment microstructure in non-age hardening Al-based alloys

[摘要] Aluminium-magnesium (5xxx) alloys have excellent properties such as: high strength to weight ratio, good formability, good corrosion resistance and good weldabiliy. This results in an increasing use of 5xxx alloys in the automotive industry. Fusion welding is a very important joining technique and mechanical properties can be affected during the welding process. In order to model the microstructure and mechanical property evolution during welding, the microstructure and property changes for samples after isothermal heat treatment and welding need to be studied.In the current study, the microstructure of an as-received material (AA5083 H22) was characterised; the softening kinetic was studied under isothermal heat treatments; the hardness and microstructure in the heat affected zone (HAZ) were studied; and a method for predicting the thermal profile in HAZ was built based on numerical method using Comsol software.

[发布机构] University:University of Birmingham;Department:School of Metallurgy and Materials

[关键词] Q Science;QC Physics