Investigation of the effects of induction heat treatment on Al6061 aluminum alloy joined with AlSi5 and AlSi12 welding wires

Aluminum alloys, which are widely used today, are used extensively in areas such as aviation, automotive and construction sectors due to their properties. Al6061, which has a wide range of applications among aluminum alloys, has been preferred as a research material due to its ability to heat treatmens, having welding capability and good strength properties. İn this study, Al6061 and Al6061-T6 materials were joined by TIG welding method using AlSi5 and AlSi12 additional welding wires and four different sample parameters were determined (Al6061 – AlSi5, Al6061-T6 – AlSi5, Al6061 – AlSi12, Al6061-T6 – AlSi12). Induction heat treatments were applied to the welded specimens at different temperatures (185 °C and 350 °C) and durations (3 minutes, 6 minutes and 9 minutes). İn induction heat treatment, the samples were heat treated by reaching high temperatures in a short durations. In order to investigate the effect of these processes on welded samples with different wires, SEM/EDX analyses, microstructure examination, microhardness tests, bending and tensile tests were performed. As a result of these examination and tests, it was observed that the hardness and strength values of the specimens subjected to aging and induction heat treatment increased.