3. Post-processing of additively manufactured Ti-6Al-4V parts

Post-treatments are designed to improve the mechanical properties of the parts, firstly by eliminating defects inherent to the process (porosity, roughness, residual stresses) and secondly by modifying the microstructure.

• Hot isostatic pressing

  Removal of internal porosity is typically achieved using Hot Isostatic Pressing (HIP) [M 3 310] . This treatment involves applying a pressure of 1,000 bar (100 MPa) for 2 h at a temperature of 920°C, followed by slow cooling. HIP treatment is extremely effective in eliminating porosities inside...