Modeling of Metal Powder Densification under Hot Isostatic Pressing

The consolidation of metal powders is a complex thermomechanical process, and the temperature significantly affects the density distribution in the compact. This study aims to simulate the consolidation process of metal powders with average particle sizes of 10µm, 25µm, and 50µm under hot isostatic pressure through finite element modeling. We specifically simulated the distribution and evolution of the relative density after hot isostatic pressing (HIP) under conditions of 1050 ◦C/130 MPa/4 h, 1150 ◦C/130 MPa/4 h, and 1250 ◦C/130 MPa/4 h. The experimental data obtained at 1050 ◦C/130 MPa/4 h were utilized to verify the simulation results by observing the geometric changes in the container. The relative density difference between the simulated and experimental results across various positions was found to be less than 2%. This methodology, termed “modeling prediction, experimental validation,” provides an efficient and cost-effective approach to accelerate experimental discovery.