The Effect of Heat Treatment on the Microstructure and Mechanical Properties of E1 Al-Mg-Sb Eutectic Alloy
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https://doi.org/10.5281/zenodo.7771586Keywords:
Al-Mg-Sb, Eutectic Alloy, Heat Treatment, Mechanical Properties, Microstructure, silage quality propertiesAbstract
In this study, the ternary eutectic Al-Mg-Sb alloy (Sb -9.3% wt. Mg +0.5% wt. Al) with composition is produced using induction furnace system, by casting method into kokil mold which is pre-heated to 500 °C. The casting temperature was set as 750 °C for homogeneous melting of the alloy. After casting, some of the samples were annealed at 350 °C for 2 hours and chilled off to cool in the furnace. After metallographic processing of heat treated and un-heattreated samples, their structural parameters were obtained by XRD, surface morphologies by FESEM, composition analysis by EDX mapping and graphic. Sample’s mechanical properties were obtained by compression tests applied at room temperature and Vickers microhardness tests. According to these results, the structure of the Al-Mg-Sb ternary eutectic alloy forms of solid phases Sb-rhombo, AlSb and α-Mg3Sb2. Sb-rhombo solid phase diffused to penetrate the small voids located at the grain boundary with the effect of heat treatment, and effectively caused an increase in strength. In addition, the fact that the AlSb and α-Mg3Sb2 phases have become more prominent in the structure, the analysis of broken surfaces, compression testing and the results of microhardness values also confirm this.
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