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利用热分析和定向凝固等手段研究了Al-Mg－Ge系中α（Al）－Mg2Ge的共晶凝固特征。实验表明：在Al-Mg－Ge系中，具有最小凝固温度区间（△T为零）的两相共晶声、不处于具有严格化学配比（Mg与Ge原子分数比为2）的Al-Mg2Ge线上，而是偏向富Mg一侧。合金成分分布在伪二元线附近一定范围内时，发生二元共晶反应，在该范围以外时将有三元共晶反应出现。Mg2Ge以棒状形式存在，当凝固速度小于4cm/h此时，具有较好的取向效果，高于该速度时发生胞晶转变。棒间距与生长速度，λ1.34和V之间成线性关系。
The eutectic solidification characteristics of α (Al) -Mg2Ge in Al-Mg-Ge series have been studied by means of thermal analysis and directional solidification. Experiments show that in the Al-Mg-Ge system, the two-phase eutectic with the minimum solidification temperature range (△ T is zero) is not in the Al- Mg2Ge line, but biased Mg-rich side. Binary eutectic reactions occur when the alloy composition is distributed within a certain range around the pseudo-binary line and beyond that range there will be a ternary eutectic reaction. Mg2Ge exists in the form of a rod. When the solidification rate is less than 4 cm / h, the Mg2Ge has a good orientation effect, and the cell transition occurs above this speed. Rod spacing and growth rate, λ1.34 and V linear relationship between.