This work demonstrates that the combined addition of Al10Sr and Al5TiB master alloys to the AlMg5Si2Mn effectively refines the grain microstructure and partially modifies the eutectic Mg₂Si phase. Thorough spectroscopic characterization reveals that the grain refinement effect is due to Al₃Ti particles acting as nucleation sites for α-Al grains, and the increased nucleation temperature of α-Al is due to Al10Sr addition. It is also determined that TiB₂ particles can act as nucleation substrates for the primary Mg₂Si phase. The prepared alloy sample with the finest microstructure (treated with both Al10Sr and Al5TiB) exhibits the greatest corrosion resistance among all tested samples.

这项工作表明，将Al10Sr和Al5TiB中间合金联合添加到AlMg5Si2Mn中可以有效地细化晶粒组织并部分改性Mg ₂ Si共晶相。彻底的光谱表征表明，晶粒细化效果是由于Al ₃ Ti颗粒充当α-Al晶粒的成核位点，而α-Al的成核温度升高是由于Al10Sr的添加。还确定了TiB ₂颗粒可以作为初级Mg ₂ Si相的形核基质。在所有测试样品中，具有最佳微观组织（用Al10Sr和Al5TiB进行处理）的合金样品均显示出最大的耐腐蚀性。