Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Influence on Thermal Treatments in the Hardness and Micro Hardness of the Alloy 7075
Submission Author:
Edwin Gilberto Medina Bejarano , MG , Brazil
Co-Authors:
Mónica Marcela Soto Suárez , Yina Faizully Quintero Gamboa, Mirian de Lourdes Noronha Motta Melo, Edwin Gilberto Medina Bejarano
Presenter: Edwin Gilberto Medina Bejarano
doi://10.26678/ABCM.COBEM2017.COB17-2757
Abstract
Aluminum alloys are used extensively in manufacturing components for industry automotive and aerospace due to its physical and mechanical properties. These alloys are excellent materials to be use in structural components, automotive and aerospace industry due to their low weight and allow a high carrying capacity and excellent usability. They are use in many structural applications requiring high resistance, low weight, high impact toughness, low thermal expansion coefficient and good corrosion resistance. The properties of the alloys depend on the type of alloys (composition) and microstructure, in turn depend on the history Thermal / mechanical suffered by the alloy during its processing. In this context, research involving the interrelationship between the alloy, the manufacturing route and the properties are of academic interest and industrial application. This work aimed to evaluate the influence of manufacturing processes: Solidification, homogenization / solubilization and aging in the alloy Al7075 using characterization techniques such as optical microscopy, hardness and microhardness. This was fundamental to verify if the mechanisms dissolution of precipitates from solidification (homogenization and solubilization) and subsequently the formation of the precipitates in the hardening (precipitation) Are being effective for the hardening mechanisms by grain size control, solid solution, and precipitation present in the 7075 alloy.
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