Influence of deformation parameters on grain size of AlSi1Mg alloy in forging

The research results of correlation between technological parameters and grain size for AlSi1Mg aluminium alloy are presented in this paper. The investigations were carried out under industrial conditions on a hammer and a press at temperature of from 350 to 500 °C. Strain, strain rate and temperature were assumed as important technological parameters influencing the grain size. The research revealed strong correlation between strain and grain size. Grain growth is observed for strains of from 0.05 to 0.30. Optimal technological parameters were also determined. The results of the above-mentioned researches were used to forecast the structure of forging of AlSi1Mg alloy. For this reason, simulations of the forging process using finite element method were carried out. Good agreement between theoretical and experimental results is observed.