Ultrasonic assisted reactive synthesis and characterization of Al-MgAl2O4 in-situ composite

The current study investigates the impact of Ultrasonic Treatment (UT) upon the microstructure and mechanical characteristics of Al-MgAl2O4 in-situ composite prepared using SiO2 oxide source and Al-2wt.% Mg alloy. Ac-cording to the findings, because of UT in composite melt SiO2 reaction has been enhanced (86%) resulting MgAl2O4 particles of size ranging from 0.2 to 5 mu m. The released Si after the silica reaction with Al-Mg has made in-situ alloying with matrix resulting Mg2Si phase formation along with alpha-Al. In UT composite 67% decrease in overall grain size was observed in the matrix material in comparison with Al-MgAl2O4 non-UT composite. The reinforcement of MgAl2O4 particles, combined with grain size refinement, has substantially enhanced the me-chanical properties of the UT composite specifically hardness and tensile yield strength by 40 and 47%, respectively.

Automated summary

The current study investigates the impact of Ultrasonic Treatment (UT) on the microstructure and mechanical characteristics of Al-MgAl2O4 in-situ composite prepared using SiO2 oxide source and Al-2wt.% Mg alloy. The results show that UT enhances the SiO2 reaction in the composite melt by 86%, resulting in MgAl2O4 particles with a size range of 0.2 to 5 μm. The reaction between silica and Al-Mg releases Si, which in-situ alloys with the matrix to form Mg2Si phase and alpha-Al phase. Compared to the non-UT composite, the UT composite exhibits a 67% decrease in overall grain size in the matrix material. The reinforcement of MgAl2O4 particles, combined with grain size refinement, substantially enhances the mechanical properties of the UT composite, specifically hardness and tensile yield strength by 40% and 47%, respectively.