Heat treatment simulation of Ti-6Al-4V parts produced by selective laser melting

The present work focuses on the simulation of heat treatment applied after printing Ti-6Al-4V parts. numerical tool aims at predicting influence conditions (e.g. holding time, temperature) residual stress field and distortions for SLM produced model relies a thermo-viscoplastic constitutive model. To determine corresponding material parameters, different creep tests have been performed temperatures ranging from 723 K to 1173 K. According results, stationary strain rate is independent hydrostatic pressure, which indicates that high temperature behavior not impacted by initial porosity. Also, parameters are observed change significantly 873 K, due progressive transformation martensitic α′ microstructure into α+β lamellar microstructure. validate proposed approach, some simulations two parts, measured. experimental then compared each other. For both agreement between data correct.