The demand for new methods to reduce CO2 emission by reusing metal scrap has increased recently. This study deals with a new recycling technique utilizing a friction stir consolidation process. In this work, copper was directly recycled from machining chips in the solid-state form without any remelting to reduce environmental pollution and to increase the economic value of the waste material. During the process, copper chips were loaded into the chamber; then, a rotating tool was plunged into the chips at a specified rotational speed and feed rate. Due to the huge amount of heat generated, the softened material was compressed and synthesized to form a consolidated part. Microstructure, mechanical properties, and electrical conductivity of the finished samples were evaluated and compared with as-received material. Also, a numerical model was implemented to predict the evolution of the main field variables, including temperature, density, and strain.

中文翻译：

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固态再生纯铜加工切屑的显微组织、力学性能和导电性

最近，对通过再利用金属废料来减少二氧化碳排放的新方法的需求有所增加。本研究涉及一种利用搅拌摩擦固结工艺的新回收技术。在这项工作中，铜以固态形式直接从加工碎片中回收，无需任何重熔，以减少环境污染并增加废料的经济价值。在此过程中，将铜片装入腔室；然后，将旋转刀具以指定的转速和进给速度插入切屑中。由于产生的大量热量，软化的材料被压缩并合成以形成固结部件。对成品样品的微观结构、机械性能和电导率进行了评估，并与原样进行了比较。还，