The article presents a study on optimising the heat treatment process of the aluminium
alloy AlSi10MgMn, which is used in the production of components for electric vehicles.
The aim of the research was to achieve an optimal combination of strength, hardness,
and elongation by controlling the parameters of solution annealing, quenching, and
ageing. The experimental work included thermodynamic calculations using Thermo-Calc
software, differential scanning calorimetry (DSC) analyses, microscopic examinations,
and measurements of hardness and tensile strength. The results showed that increasing
the solution annealing temperature to 500 °C and ageing at 210 °C produced the highest
hardness values and a satisfactory combination of mechanical properties. The optimal
conditions were determined to be solution annealing at 465 °C for 2 h, water quenching,
and artificial ageing at 230 °C for 2 h. Under these conditions, a tensile strength of 201
MPa, yield strength of 147 MPa, and elongation of 4.5% were achieved.
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