Prediction of Element Transfer in GMAW Welded Aluminum Alloy 6063

Abstract

The thermal and mechanical parameters, as well as the microstructure, of the metal inert gas (MIG) weldment and the important variables controlling these qualities were determined by experimental and computational research on AA 6063 aluminium.  Among other things, this method was used to construct the heat distribution and time-temperature histories acquired during MIG welding. In order to increase the accuracy of the programme, FORTRAN developed a function. MIG bead-on-plate welds were used in this work to evaluate real-time temperature readings and effective thermal distribution factors, such as welding speed and arc voltage. According to the results, temperature gradients and welding-induced stress fields. It was also possible to forecast heat sink effects and precipitated phases by analysing and predicting both the TTT curve and the TTT curve itself using microstructural and microhardness testing. Microstructure images indicated that overaged, agglomerated -Mg2Si phases in the HAZ as well as modified -AlFeSi pseudo-platelike precipitates alongside the smaller and coarser -Mg2Si phases in the Fusion Zone had precipitated as a consequence of the ageing process.