Darvinraj Ravi, Mohammad Sukri Mustapa, Mohd Rasidi Ibrahim, Yusri Yusof, Md Saidin Wahab, Djamal Hissein Didane, Waluyo Adi Siswanto, Sarjito Sarjito, Bagus Wahyudi, Andoko Andoko
This study investigates the effects of graphite particle reinforcement on the mechanical and tribological properties of aluminum alloy AA6061 composites produced via hot press forging (HPF), a direct recycling method for aluminum chips. Graphite content varied from 2.5% to 12.5%, with the Al6061-7.5%Gr composite achieving the highest tensile strength (102.36 MPa) and yield strength (87.07 MPa). Hardness peaked at 24.73 HV with 5% graphite. Tribological tests showed improved wear resistance at higher graphite levels, with the Al6061-12.5%Gr composite exhibiting the lowest wear rate (0.00033 mm3/N·m). These findings highlight HPF’s potential for sustainable fabrication of high-performance aluminum composites. © 2025 by the authors.
Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Parit Raja, 86400, Malaysia; Institute of Strategic Science and Technology, Universiti Muhammadiyah Malaysia (UMAM), Perlis, Padang Besar, 02100, Malaysia; Faculty of Engineering, Universitas Muhammadiyah Surakarta, Jawa Tengah, Kabupaten Sukoharjo, 57162, Indonesia; Department of Mechanical Engineering Politeknik Negeri Malang, Kota Malang, Jawa Timur, 65141, Indonesia; Faculty of Engineering, Universitas Malang, Jawa Timur, Kota Malang, 65145, Indonesia