Low temperature aging for die casting Al alloy under appropriate technological condition can increase average strength and Brinell hardness more than 10% and 30% respectively.

• 对压铸铝合金进行低温时效 ,在最佳工艺条件下 ,合金的平均拉伸强度提高 10%25 以上 ,布氏硬度提高 30%25以上。