This study aims to investigate the mechanical, wear and corrosion performances of TiC reinforced AZ91 matrix composites. AZ91 alloy and AZ91/TiC composites with different weight fractions of 10, 20 and 30 (wt%) were fabricated by powder metallurgy incorporating hot pressing. Microstructure characterization shows that partial agglomeration of particles is present especially in AZ91/30 wt% TiC composite. The addition of TiC led to significant improvement in hardness and wear resistance. Observed wear mechanism is abrasive. As compared with AZ91, compressive yield strength and ultimate compressive strength of the composites were also significantly improved. On the other hand, corrosion rate increased with the addition of TiC particles by virtue of presence of the galvanic reactions.

中文翻译：

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TiC含量对热压AZ91/TiC复合材料力学、磨损和腐蚀性能的影响

本研究旨在研究 TiC 增强 AZ91 基复合材料的机械、磨损和腐蚀性能。AZ91 合金和 AZ91/TiC 复合材料具有 10、20 和 30 (wt%) 的不同重量分数是通过粉末冶金结合热压制造的。微观结构表征表明，尤其是在 AZ91/30 wt% TiC 复合材料中，存在颗粒的部分团聚。TiC的加入导致硬度和耐磨性的显着改善。观察到的磨损机制是磨蚀性的。与AZ91相比，复合材料的压缩屈服强度和极限压缩强度也有显着提高。另一方面，由于电反应的存在，腐蚀速率随着 TiC 颗粒的加入而增加。