Metallography of Al5 Mg and Al10 Mg alloys modified with 2% Zn after thermal aging treatment
DOI:
https://doi.org/10.15665/rp.v23i2.3698Keywords:
aluminum-magnesium alloys, aging, heat treatments.Abstract
Modern society has the need to obtain materials with better characteristics that help in the use of various applications, so it has always sought new alloys with weight/resistance ratios. In the current work research was carried out on the influence of the addition of a small amount of zinc (2%) on the mechanical properties of two representative aluminum alloys - Magnesium (Al5 Mg and Al10 Mg). The methodology used has several phases, first with a bibliographic study on the principles and fundamentals of heat treatments, subsequently the design of the laundry was carried out by which the specimens are obtained under optimal conditions for the development of this work. Experimental development consists of the selection of the molding medium, model design, fusion and the process of heat treatment of artificial and natural aging of the modified Aluminium-Magnesium alloy, subsequently analysis of the influence of cooling speed, metallographic analysis and grain size. Concluding the coking at high cooling speeds and the poor colability of the alloy results in a very rapid solidification of the specimen, having the characteristic of a fine grain size and absence of macroscopic porosities, as well as a clean and bright surface finish; the temperature and time of heat treatment had a great influence on the variation in grain size due to the solute concentration of each specimen.
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