Synergistic Influence of Compaction Pressure and Sintering Temperature on Microstructure Evolution and Tribological Properties of Cu-Fe-Si-Mn-Ni Alloys
Randomized trial investigates microstructure and tribological performance of Cu-Fe-Si-Mn-Ni alloys, suggesting optimal processing conditions.
Key Points
This study aims to characterize the combined effects of compaction pressure and sintering temperature on the microstructure and tribological properties of Cu-Fe-Si-Mn-Ni alloys.
Utilized a two-stage experimental approach across 48 specimens.
Identified Composition (iii) for detailed study based on superior wear performance.
Systematically tested four compaction pressures (100-175 MPa) and four sintering temperatures (700-850°C).
Highest density (6.34 g/cm³) and hardness (85 VHN) achieved at 125 MPa/700°C, but severe tribological degradation occurred at 850°C with wear rate of 32.8 × 10⁻⁵ mm³/Nm and COF of 0.62.
Processing at 150 MPa/800-850°C yielded lowest wear rate (9.8-13.8 × 10⁻⁵ mm³/Nm) and stable COF (0.56-0.63) with adequate density (5.78-5.87 g/cm³).
Microstructural analysis showed finest Fe₃Si microstructure with optimal cluster diameter (8.2 ± 1.4 μm) leading to enhanced tribological performance.