CONSTRUCTION SOLIFIDIFICATION APPARATUS OF ALUMINUM ALLOYS UNDER DIFFERENT COOLING CONDITIONS USING RECYCLABLE MATERIALS

• DOI: 10.22533/at.ed.317382317037

• Palavras-chave: Aluminum alloys; Macrostructure; Microstructure; Solidification device.

• Keywords: Aluminum alloys; Macrostructure; Microstructure; Solidification device.

• Abstract:

  In today's world, the need for new technologies that meet the growing market and industry demand is perceived daily. Therefore, in the area of materials engineering, the aluminum alloy stands out among the others, due to its excellent mechanical characteristics, which facilitates its application in different situations. In the present work, we start from the hypothesis that, during the solidification process of aluminum alloys, if we subject an aluminum alloy to different cooling conditions after casting, we could improve and improve its mechanical properties. For this purpose, we cast aluminum alloy Al - 6061, poured and cooled with: oil, water, ambient air and compressed air. We submitted the molten samples to sanding and chemical attack and finally we evaluated their macro and microstructure. In the end, it was possible to observe in the verification of the macrographs, different morphologies and the occurrence of porosities, greater formations occurred in the sample cooled by compressed air. In the micrograph samples, all showed grain formation very different 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.