In the last decades, new flexible manufacturing processes have been developed to face the demands, by many industrial fields, for highly customized complex functional parts. The peculiar design of these components often overcomes conventional sheet metal and bulk metal forming processes capabilities. In order to face this issue, new hybrid techniques, capable of exploit key advantages of different processes, have to be developed. In this study, a method to obtain sheet-bulk joints, based on the Linear Friction Welding process, is proposed. The feasibility of the technique was investigated through an experimental campaign carried out with varying pressure and oscillation frequency using AA6082-T6 aluminum alloy. The main mechanical and metallurgical properties of the produced joints, including typical material flow defects, were highlighted. It was found that sound hybrid sheet-bulk joints can be produced by the proposed approach. Finally, it was highlighted how the height of the weld center zone plays a key role on the mechanical properties of the produced joints.

在过去的几十年中，已经开发出新的柔性制造工艺来满足许多工业领域对高度定制的复杂功能部件的需求。这些组件的特殊设计通常克服了传统的钣金和块状金属成形工艺的能力。为了面对这个问题，必须开发能够利用不同过程的关键优势的新混合技术。在这项研究中，提出了一种基于线性摩擦焊接工艺获得板材-大块接头的方法。通过使用AA6082-T6铝合金在不同压力和振荡频率下进行的实验活动，研究了该技术的可行性。突出了所生产接头的主要机械和冶金性能，包括典型的材料流动缺陷。已经发现，通过所提出的方法可以产生良好的混合片状-整体式接头。最后，强调了焊接中心区域的高度如何对所生产接头的机械性能起关键作用。