在单向和连续铸造铝合金中常可以观察到层状晶组织。层片状晶的层片呈枝晶结构,与普通枝晶结构不同,其枝品主轴中央有一条笔直线,侧向分枝比较发达,且与主轴之间有55°左有的夹角。层状晶具有相当好的塑性,其伸长率比普通柱状晶高40％~([-1])完全层状晶的铸锭将作为良好的塑性材料投入生产使用。 Stratified crystal structure can often be observed in unidirectional and continuous cast aluminum alloys. Lamellar crystal lamella dendrite structure, and ordinary dendritic structure is different, its branch spindle center has a straight line, the lateral branch is more developed, and with the main axis of 55 ° left angle. The layered crystal has good ductility, and its elongation is 40% ~ ([- 1]) higher than ordinary columnar crystal. The completely layered crystal ingot will be put into production as a good plastic material.