Abstract Two novel single-pass laser welding methods were performed to join TC4 Ti alloy and 304 SS using V interlayer and V/Cu bilayer. In order to avoid the formation of brittle Ti-based IMCs, two hybrid joints based on different welding mechanisms were created. The joint using the V interlayer with a fusion weld and a diffusion weld was obtained. The fusion weld was formed on Ti alloy, diffusion weld was formed at the Ti alloy-SS interface. The joint using the V/Cu bilayer with a fusion weld, a diffusion weld, a braze weld was obtained. The fusion weld was formed on Ti alloy, V and Ti alloy were joined by atomic interdiffusion, SS and Cu were joined by brazing. The tensile strength and quality of joints was evaluated.

中文翻译：

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TC4 钛合金与 V 夹层和 V/Cu 双层的 304 SS 单道激光焊接

摘要 采用V 夹层和V/Cu 双层焊接TC4 Ti 合金和304 SS 两种新型单道激光焊接方法。为了避免脆性钛基 IMC 的形成，创建了两种基于不同焊接机制的混合接头。获得使用带有熔焊和扩散焊的 V 夹层的接头。Ti合金上形成熔焊，Ti合金-SS界面形成扩散焊。获得使用具有熔焊、扩散焊、钎焊的V/Cu双层的接头。在Ti合金上形成熔焊，V和Ti合金通过原子相互扩散连接，SS和Cu通过钎焊连接。评估接头的抗拉强度和质量。