The welding process of the lap joint between a 5182 aluminum alloy and a DP1180 two-phase steel sheet (1.2 mm thick) is deeply studied by friction stir welding, defects not revealed, and high-quality welded joints were obtained. The steel plate pressed to 0.2 mm is placed under the aluminum plate. With a large-size friction stir head, the rotational speed was 800 rpm and the welding speed was 50 mm/min, respectively. Many steel particles flaking in the aluminum matrix were distributed in the vicinity of the interface of the weld zone; they were surrounded by a thick layer of an intermetallic compound. This continuous and uniform layer composed of Al₄Fe (EDS analysis) was formed at the interface.

通过搅拌摩擦焊对5182铝合金与DP1180两相钢板（1.2mm厚）搭接接头的焊接工艺进行了深入研究，未发现缺陷，得到了优质的焊接接头。将压制至0.2毫米的钢板放在铝板下方。对于大型摩擦搅拌头，转速分别为800 rpm和焊接速度为50 mm / min。在铝基体中剥落的许多钢屑散布在焊接区的界面附近。它们被厚厚的金属间化合物层包围。在界面处形成了由Al ₄ Fe组成的连续而均匀的层（EDS分析）。