Comparison of the effect of germanium (Ge) and germanium-silicon (Ge-Si) combinations on the hardness of aluminum alloy through mathematical modeling

This study investigates the modification of aluminum alloys from the systems through the addition of germanium (Ge) and germanium-silicon (Ge-Si) elements during melting. Driven by the extensive industrial applications of aluminum alloys in mechanical engineering, aviation, and related fields, the research aims to enhance material properties by introducing controlled elemental variations. Alloy samples were cast into sand-clay molds at 750°C, with varying concentrations of Ge and Ge-Si incorporated into the base compositions. Experimental results were analyzed using correlation graphs, enabling mathematical modeling of property relationships. Comparative graphs were generated to juxtapose theoretical predictions against practical outcomes derived from the casting process. Key findings reveal significant correlations between Ge/Ge-Si additions and alloy performance, validated through empirical data and mathematical models. The study concludes with a critical evaluation of discrepancies between theoretical diagrams and experimental results, offering insights into optimized compositional adjustments for targeted aluminum alloy enhancements.