Peres, Maurício MhirdauiHolanda, Eloam Jessica Nunes2024-07-092024-07-092024-06-24HOLANDA, Eloam Jéssica Nunes. Avaliação do efeito da solubilização e do envelhecimento na estrutura cristalina e na microdureza da liga Al-Mg AA5083. 2024. 66 f. Trabalho de Conclusão de Curso (Graduação em Engenharia de Materiais) - Departamento de Engenharia de Materiais, Universidade Federal do Rio Grande do Norte, Natal, 2024.https://repositorio.ufrn.br/handle/123456789/58683The AA5083 Al-Mg alloy is widely used in various industrial applications due to its excellent combination of mechanical properties and corrosion resistance. However, to ensure its optimal performance or to recover these properties in challenging operational environments, such as in the oil and gas industry, a potential solution lies in performing heat treatments. This study investigates the microstructure and microhardness of 5083 H112 alloy samples subjected to solution treatment and aging at different temperature and time combinations. Analyses were conducted using scanning electron microscopy (SEM-FEG with EBSD and EDS), X-ray fluorescence (XRF), X-ray diffraction (XRD), and Vickers microhardness testing to analyze how changes in the crystalline structure affect mechanical properties. The results indicate that the original sample, partially strain-hardened by rolling, showed signs of incomplete recrystallization, Al-a grains with high magnesium content in solid solution, suggesting a metastable state, along with Mg-rich precipitates and the Al6(Fe, Mn) phase. Solubilized samples exhibited grain growth due to thermal activation and restoration of the original hardened material's crystal structure. On the other hand, samples aged under different conditions showed a higher quantity of precipitates Al6Fe compared to others, increasing microhardness over time. However, work hardening proved more effective in strengthening the material compared to thermal treatments.Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/AlumínioAA5083tratamentos térmicosestrutura cristalinamicrodurezabachelorThesisCNPQ::ENGENHARIAS