Friction stir processing (FSP) is an emerging solid-state technique for preparing surface composites using various reinforcements. Ceramics and metallic particles are easily reinforced in a matrix by this technique. Surface composites made from an LM24 alloy reinforced with graphite and tin, with good wettability and material flow owing to the low melting point of tin, were fabricated by FSP at two rotational speeds of 1,400 and 1,000 rpm. Despite its low hardness, the graphite/LM24 surface composite fabricated at a higher rotational speed of 1,400 rpm exhibited better wear resistance. However, its frictional behavior was not significantly affected by the reinforcement. The fabricated surface composites with graphite and tin reinforcement as well as graphite-only reinforcement exhibited contradicting behaviors under sliding wear conditions. The post wear analysis indicated that abrasion, adhesion, layer formation, and delamination occurred on the composite surfaces.

搅拌摩擦加工（FSP）是一种新兴的固态技术，用于使用各种增强材料制备表面复合材料。通过这种技术，可以轻松地将陶瓷和金属颗粒增强到基体中。由FSP在1400和1,000 rpm的两种转速下制造了一种由石墨和锡增强的LM24合金制成的表面复合材料，由于锡的低熔点而具有良好的润湿性和材料流动性。尽管其硬度较低，但以1400 rpm的较高转速制造的石墨/ LM24表面复合材料仍具有较好的耐磨性。但是，其摩擦性能并未受到增强的明显影响。用石墨和锡增强材料以及仅使用石墨的增强材料制成的表面复合材料在滑动磨损条件下表现出矛盾的行为。