Simulating and Predicting the Process of Hot isostatic Pressing of a Casing Part with Ti6Al4V Powder

In aerospace, pipelines and other critical areas, Ti-base light alloys are used widely due to their high strength-to-weight ratio. However, it is difficult to manufacture Ti parts because of high melting point, weak machinability and high processing cost. Hot Isostatic Pressing (HIP) is an economic method to form Ti6Al4V parts. In order to investigate the densification behavior of metal powder under HIP process, the consolidation of Ti6Al4V powder during HIP process is studied by using the FEM method in this study. The densification model of viscoplastic Perzyna with a modified Shima criterion is used in MSC. Marc code. A thermo-mechanical coupling analysis is done for the process of HIPping a cylinder part. The shape change, the density distribution and other disciplines from simulations are compared with the experimental results. It shows a good agreement between them. In the end, the process of HIPping a casing part with Ti6Al4V powder is simulated in the MSC. Marc code. The research will help to design much more complex capsules and predict the process of HIP more accurate.