Al/steel butt-joints are hard to be fusion welded because of the easily formed and unevenly distributed brittle intermetallic compounds (IMCs) at the interface. Laser-arc hybrid welding was used to suppress the IMCs formation and improve its uniformity through beam oscillation. The weld defects of uneven formation and lack of fusion were suppressed at optimised frequency of 150 Hz. Furthermore, the interface was transferred from an uneven two-layer IMCs (≥ 3.8 µm), including Al₅Fe₂ and Al1₃Fe_4, to a uniform single-layer Al₅Fe₂ (≤ 1.4 µm). Owing to these changes, not only the tensile property was increased by 65% compared to non-oscillating weld, but also the bending property that hardly reported in most studies was enhanced by 96%.

铝/钢对接接头由于易形成且不均匀分布的脆性金属间化合物（IMC）在界面处难以熔焊。激光电弧复合焊接用于抑制 IMC 的形成并通过光束振荡提高其均匀性。在150Hz的优化频率下抑制了形成不均匀和未熔合的焊接缺陷。此外，界面从不均匀的两层 IMC（≥ 3.8 µm），包括 Al ₅ Fe ₂和 Al1 ₃ Fe ₄转移到均匀的单层 Al ₅ Fe ₂(≤ 1.4 µm)。由于这些变化，与非振荡焊缝相比，不仅拉伸性能提高了 65%，而且大多数研究中几乎没有报道的弯曲性能提高了 96%。