当前,热处理强化可焊变形铝合金在工业中得到广泛应用.但是,在强化状态下,这些合金半成品趋于层状断口。一般认为,合金组织中存在不同塑性的层状组织是铝合金形成成层的最普遍原因,而层状组织的出现与下列综合因素有关:金属织构、金属间化合物的数量和时效制度.于是,取垂直于轧制品的断面(断口)进行了研究(图1a)。 At present, heat-treatable and weldable deformable aluminum alloys are widely used in industry, however, these semi-finished alloys tend to delaminate in the strengthened state. It is generally believed that the presence of different plastic layers in the alloy structure is the most common reason for the aluminum alloy layer formation. The appearance of the layer structure is related to the following comprehensive factors: the amount of the metal texture, intermetallic compounds and the aging system. , Taken perpendicular to the cross-section of rolled products (fracture) were studied (Figure 1a).