Modeling and Evaluating of Supersolidus Liquid Phase Sintering Variables on Physical and Mechanical Properties of Cu28Zn Alloy

An experimental investigation using response surface methodology (RSM) based on a central composite rotational design (CCRD) with three parameters, was used to model and evaluate the supersolidus liquid phase sintering (SLPS) procedure of the brass alloyed powder. To achieve a high densification, the effect of sintering variables such as sintering temperature, time and atmosphere have to be characterized and optimized. Mathematical models were developed to predict sintered density and impact energy at 95% confidence level. The developed mathematical models would help to predict the variation of densification and impact energy at the various mentioned sintering conditions. To better analyzing the microstructure and pore evaluation was carried out from metallographic cross sections of samples to evaluate sintering variables during supersolidus liquid phase sintering.