The twin-wire CMT with Al-Si filler was used as weld/brazing process for dissimilar joining of stainless steel and aluminum. It is shown that this approach can ensure a satisfactory performance of the joint and the dissimilar joint exhibits typical characteristics of common known steel/aluminum weld brazing joints. Intermetallic compounds (IMCs) were detected next to the steel as a layer of Fe₂Al₅, as a layer of Fe₃Al₂Si₄ adjacent to the aluminum side and as a scattered phase of Fe₄Al₁₃ in between. The total thickness of the IMCs was determined with 2–4 μm. The maximum tensile strength of the weld joints without reinforcement was up to 96 MPa and cross tensile test specimens fractured at the brazing interface at about 35% of the strength of the aluminum. An increase of the wire feeding rate and decrease of the welding speed thereby outperform beneficial in respect to wetting characteristics. However, excessive heat input (e.g., wire feeding rate larger than 7.5 m/min) causes a reduction of the mechanical properties. A groove gap about 1 mm ensures furthermore a good back appearance.

具有Al-Si填料的双线CMT用作不锈钢/铝异种连接的焊接/钎焊工艺。结果表明，这种方法可以确保接头性能令人满意，而异种接头则具有公知的钢/铝焊接钎焊接头的典型特征。在金属旁边检测到金属间化合物（IMC），作为Fe ₂ Al ₅层，与铝侧相邻的Fe ₃ Al ₂ Si ₄层和Fe ₄ Al _13的分散相。在两者之间。IMC的总厚度确定为2-4μm。没有补强的焊接接头的最大抗拉强度高达96 MPa，并且在铜焊界面处以铝的大约35％的强度断裂的交叉拉伸试样。焊丝进给速率的增加和焊接速度的降低由此在湿润特性方面胜过有益。但是，过多的热量输入（例如，焊丝进给速度大于7.5 m / min）会导致机械性能下降。约1毫米的凹槽间隙确保了良好的后外观。