可以发现Al元素从界面侧的枝晶状转变为团装及细小的长条状，而Cu元素在钎缝中并未出现明显的分层，主要以骨骼状分布。其中Si元素主要以颗类状和长条状分布，并无大面积块状分布

It can be found that the Al element transforms from the dendritic shape on the interface side to the clump and thin strip shape, while the Cu element does not appear obvious delamination in the brazing joint, and is mainly distributed in the form of skeleton. Among them, the Si element is mainly distributed in the form of particles and strips, and there is no large-area block distribution.