In the ternary alloy of Mg 9Al 0.8Zn small amount addition of Sn results in significant improvement of heat resistance. However, the excessive Sn addition to Mg 9Al 0.8Zn leads to the decrease of the strength at elevated temperature.

• 在Mg?9Al?0.；8Zn基合金中加入少量的Sn便能有效地提高合金的耐热性，而加入过多的Sn反而会导致合金高温强度下降。