Friction stir processing (FSP) is a solid-state material processing technique to enhance the surface properties of metallic materials. In this study, Cu-1.0%Cr alloy is friction stir processed with an intention to improve its surface hardness and wear resistance. A single-pass FSP was performed by varying the tool traverse speed from 50 to 200 mm/min in steps of 50 mm/min and the tool rotational speed was kept constant at 600 rpm. Samples for microstructure, mechanical, electrical conductivity, and wear studies were extracted from the stir zone. The grain size of the stir zone was reduced to 4 μm from its initial 40 μm after processing with a traverse speed of 200 mm/min. An increase in hardness was observed in the stir zone processed with higher traverse speed (200 mm/min) from 71 HV to 95 HV. The minimum wear rate and decrease in coefficient of friction (CoF) were observed in the specimen processed with 200 mm/min. The electrical conductivity of the base alloy was 84.4 % IACS, whereas for the processed at 50 mm/min alloy it was 82.1 % IACS. Results showed that FSP is an effective way to increase the wear resistance of the surfaces without much deteriorating the electrical conductivity.

搅拌摩擦加工（FSP）是一种固态材料加工技术，旨在增强金属材料的表面性能。在这项研究中，对Cu-1.0％Cr合金进行了摩擦搅拌处理，以提高其表面硬度和耐磨性。通过以50 mm / min的步长从50到200 mm / min改变刀具移动速度来执行单程FSP，并且将刀具转速保持恒定在600 rpm。从搅拌区中提取了用于微观结构，机械，电导率和磨损研究的样品。在以200 mm / min的移动速度加工后，搅拌区的晶粒尺寸从其最初的40μm减小到4μm。在以71 HV至95 HV的较高往复速度（200 mm / min）处理的搅拌区中观察到硬度增加。在以200 mm / min的速度处理的样品中观察到最小磨损率和摩擦系数（CoF）的降低。基础合金的电导率为84.4％IACS，而对于以50 mm / min的合金进行处理的电导率为82.1％IACS。结果表明，FSP是增加表面耐磨性而又不会大大降低导电性的有效方法。