Central Composite Experiment Design (CCD)-Response Surface Method (RSM) to Optimize the Sintering Process of Ti-6Al-4V Alloy

It is widely acknowledged that the blended elemental (BE) powder metallurgy (PM) Ti6Al4V alloy attracted unusual due to its low cost and comprehensive mechanical properties. However, high porosity mediocre properties of traditional vacuum sintering limited application. To achieve better performance, central composite designs (CCDs) method was employed analyze influence parameters, such as temperature (St), heating rate (Hr), holding time (Ht). The results indicated St makes most significant contribution compressive strength density, accounting for 95.5% 86.54% respectively. In addition, Ht compression ratio, which accounted 89.35%. Through analysis response surface methodology (RSM), optimum parameters (St, Ht, Hr) could be considered 1300 °C, 148 min 5 °C/min. verification experiments were carried out under conditions, experimental in good agreement with predicted values, since deviation values less than 4.9%. Therefore, this study certify reliability CCDs method, would contribute development titanium alloys