Efforts to enhance sustainability in all areas of life are increasing worldwide. In the field of manufacturing technology, a wide variety of approaches are being used to improve both resource and energy efficiency. Efficiency as well as sustainability can be improved by creating a circular economy or through energy-efficient recycling processes. As part of the interdisciplinary research group "Light—Efficient—Mobile" investigations on the energy-efficient friction-induced recycling process have been carried out at the department of Forming and Machining Technology at Paderborn University. E.g. using the friction-induced recycling process, different formless solid aluminum materials can be direct recycled into semi-finished products in an energy-efficient manner. The results of investigations with regard to the influence of the geometrical shape and filling rate of the aluminum particles to be recycled as well as the rotational speed of the continuously rotating wheel are explained in this paper. In addition to the recycling of aluminum chips, aluminum particles like powders from the field of additive manufacturing are processed. Based on these results, the future potentials of solid-state recycling processes and their contribution to the circular economy are discussed. The main focus here is on future interdisciplinary research projects to achieve circularity in the manufacturing of user-individual semi-finished products as well as the possibility to selectively adjust the product properties with the continuous recycling process.

全球范围内正在加大在生活各个领域加强可持续性的努力。在制造技术领域，人们正在采用多种方法来提高资源和能源效率。通过创建循环经济或通过节能回收流程可以提高效率和可持续性。作为跨学科研究小组“轻—高效—移动”的一部分，帕德博恩大学成形与加工技术系对节能摩擦诱导回收过程进行了研究。例如，利用摩擦诱导回收工艺，不同的无形固体铝材料可以以节能的方式直接回收成半成品。本文解释了待回收铝颗粒的几何形状和填充率以及连续旋转轮的转速的影响的研究结果。除了回收铝屑外，还对来自增材制造领域的铝颗粒（如粉末）进行加工。基于这些结果，讨论了固态回收过程的未来潜力及其对循环经济的贡献。这里的主要重点是未来的跨学科研究项目，以实现用户个人半成品制造的循环性，以及通过连续回收过程选择性调整产品属性的可能性。