Ligas de Mg aplicadas na indústria automobilística

Abstract

The automotive industry is more and more willing and subjected to deploy new technologies in the market to mitigate environmental impacts, trying to reduce the consumption of fossil and green fuels, and hence impacting on the emission of pollutant gases related to the greenhouse effect. From that, the auto industry started to account for new alternative lightweight materials to compose specific parts of the vehicles. Therefore, with the deployment of such lighter materials, there will be a direct decrease on the vehicle’s total weight, minimizing the fuel consumption, providing higher autonomy and fuel saving, without losing performance and even being able to improve it. The opportunities of mass reduction in automotive structural applications are increasingly made by using light alloys, such as Mg ones, which have an excellent resistance-weight ratio. The constant improvements related to these alloys and the lightness they can provide for automotive components work as motivators for technological improvements regarding the development of extracting techniques and processing of primary Mg, refining conventional processing techniques, and even creating new processing methods and new Mg alloys containing rare earth elements or being free of them. Such improvements are linked to superior properties, such as mechanical resistance, fluency resistance and Mg alloys corrosion on high and room temperatures. These advances to viable costs can provide the usage of Mg alloys in large scale on the auto industry.