Mg–Al–Zn alloys with different Al content and different cooling conditions were prepared. The solid solution content of Al and Zn in the alloy was determined by electrochemical phase separation. The results show that Al has a large amount of solid solution, while Zn has a very low amount. Al can play a role in solid solution strengthening, while Zn is very small. Al has a repulsive effect on Zn and reduces the solid solubility of Zn. The higher the Al content it has, the larger the Al solid solution and the smaller the Zn solid solution we observe. The higher the solidification cooling rate is, the greater the solid solution amount of Al and Zn is.

中文翻译：

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凝固速率和Al含量对Mg-Al-Zn合金固溶体的影响

制备了不同Al含量和不同冷却条件的Mg-Al-Zn合金。合金中Al和Zn的固溶体含量通过电化学相分离法测定。结果表明，Al具有大量的固溶体，而Zn具有极低的量。Al可以起到固溶强化的作用，而Zn的作用很小。Al对Zn有排斥作用，降低Zn的固溶度。我们观察到的Al含量越高，Al固溶体越大，而Zn固溶体越小。凝固冷却速度越高，Al和Zn的固溶量越大。