Akademik Veri Yönetim Sistemi
Tribology International, cilt.216, 2026 (SCI-Expanded, Scopus)
In this work, B319 aluminum matrix composites reinforced with 5 and 10 wt% TiC were fabricated via high-energy ball milling followed by hot pressing. The effects of TiC content on microstructure, hardness, tribological behavior, and drilling machinability were systematically evaluated. Incorporating TiC refined the microstructure and increased hardness from 84.4 to 102.5 HV0.5 (≈21 % improvement), while relative density showed only a slight reduction. Under dry sliding conditions, wear loss and specific wear rate decreased by 52 % and 36 %, respectively, accompanied by a reduction in the coefficient of friction from 0.548 to 0.484. Drilling tests revealed that feed rate exerted a stronger influence on thrust force and torque than cutting speed, with the most favorable machinability obtained at 100 m/min and 0.05 mm/rev. Overall, 5 wt% TiC reinforcement offered the optimal balance of wear resistance and machinability, demonstrating the dual functional role of TiC in enhancing both tribological and machining performance of powder-metallurgy B319 composites.