Abstract:
In today's world, the need for new technologies that meet the growing demand of the market and industry is seen daily. Therefore, in the area of materials engineering, the aluminum alloy stands out among the others, as it has excellent mechanical characteristics, which facilitates its application in different situations. In the present work, we started from the hypothesis that during the solidification process of aluminum alloys if we submitted an aluminum alloy to different cooling conditions after casting, we could enhance and improve its mechanical properties. For this purpose, we cast the aluminum alloy Al – 6061, poured and cooled down using: oil, water, ambient air and compressed air. We subject the molten samples to sanding and chemical attack and finally evaluate their macro and microstructureIn the end, it was possible to observe in the macrography check, different morphologies and the occurrence of porosities, there were greater formations in the sample cooled by compressed air. In the micrograph samples, all showed very different grain formation from each other. We concluded that the ingots under different cooling resulted in different morphologies and microstructures; in oil-cooled samples it was possible to identify the phases present in the alloy.