The key to fining the structure of ingot casting lies in the formation of a number of fine equiaxed crystal grains. 金属铸态组织细化的关键是获得大量细小等轴晶。
The results show that the as-deposited microstructure possesses the feature of whole equiaxed grains and fine distributed micro cavities on the grain boundaries. 沉积态高镁铝合金基体呈全部等轴晶组织并存在少量显微孔洞是沉积态组织的主要特征。
