铸态的ZL301合金的显微组中存在着脆性化合物β相,将严重降低合金的机械性能。为了提高ZL301合金的强度和塑性,必须对其进行固溶处理,使β相在固溶温度下溶入α基体而呈饱和状态。但是β相的溶解速度是相当缓慢的,若需得到完全均匀化,固溶处理时间长达60～70小时。ZL 301合金的传统固溶处理工艺是:在435±5℃下保温15～20小时, The microstructure of the as-cast ZL301 alloy contains the brittle phase β, which seriously deteriorates the mechanical properties of the alloy. In order to improve the strength and ductility of ZL301 alloy, it must be solution treated so that the β phase dissolves into the α matrix at the solution temperature and becomes saturated. However, the β-phase dissolution rate is quite slow, if required to be completely uniform, solution treatment time up to 60 to 70 hours. ZL 301 alloy solution treatment process is the traditional: at 435 ± 5 ℃ for 15 to 20 hours,