Compacting Pressure Effect on Densification in Supersolidus Liquid Phase Sintering of Prealloyed Brass Powder

The present study was aimed to evaluate the effect of compacting pressure on the densification and sintering behavior of Cu-28Zn prealloyed powder. For this purpose, samples were compacted at pressures of 100, 200, 300, 400, 500 and 600 MPa and then were sintered at 870 and 890 °C for 30 minutes. According to the obtained results from tests such as densification, hardness and microstructure studies, it was specified that the maximum densification at 870 °C occurred at 300 MPa. With increasing of sintering temperature, the maximum densification shifted to lower pressures. Also the microstructural changes represent the occurring fragmentation and rearrangement of particles is faster in the samples compacted at lower pressures.