根据某些资料和手册的介绍,ZL301铸铝通过固溶处理可使组织变成单一的a固溶体,以改善合金的机械性能(包括延伸率和抗拉强度),若β相固溶不完全时,铸件则不宜采用.我们认为上述的看法是值得商榷的.ZL301铸铝经正常工艺固溶处理,不可避免地会残存一部分β相,而少量β相的存在也并不影响铸件的性能. According to some information and manual introduction, ZL301 cast aluminum through the solution treatment can make the organization into a single solid solution to improve the mechanical properties of the alloy (including elongation and tensile strength), if the β-phase solid solution is incomplete , Castings should not be used.We think the above view is debatable.ZL301 cast aluminum by the normal solution treatment, will inevitably remain part of the β phase, and the presence of a small amount of β phase does not affect the performance of the casting.