应用所建立的热源模型模拟分析了激光深熔焊焊缝边界形状，并与实验结果进行了比较。
The border of laser beam penetration welding seam is simulated by the constructed heat source model and compared with the experimental results.
建议在焊接时焊缝周围的边界，大头钉的一系列应使用。
It is recommended that when welding around a perimeter, a series of tack welds should be used.
若搅拌针表面是光滑的，搭接界面在厚度方向上的迁移减小，但返回边界面向焊缝中心延伸的程度增大。
If the surface of the stir pin is smooth, the migration of interface in the thickness direction reduces, but the interface spreading to the weld is serious.
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