|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Forming of Components - Tailoring Specific Material Properties in Low Volume Production
||Microstructural Evolution of Inconel 625 Manufactured through Direct Metal Laser Sintering Technique of Additive Manufacturing
||Yaakov Idell, Lyle Levine, Sudah Cheruvadhur, Eric Lass, Mark Stoudt, Carelyn Campbell, Li Ma
|On-Site Speaker (Planned)
Additive manufacturing of nickel based superalloys will allow direct production of complex shaped components based on 3-D computer aided drawings, which can reduce time and cost for production of complex parts. However, the effects resulting from repeated cycles of rapid heating, melting, cooling, and solidification on the microstructure are not well understood. We conducted a study investigating the microstructual evolution to evaluate and asses the optimal heat treatment for Inconel 625 built through the additive manufacturing technique of direct metal laser sintering. Microstructural characterization techniques including scanning and transmission electron microscopy, dilatometry, electron back scattering diffraction, x-ray diffraction, and synchrotron ultra-small angle X-ray scattering were used to determine the residual stress distributions, porosity, phase fractions, and compositional differences as functions of varying processing conditions. These results are compared with multicomponent diffusion and FEM simulations that predict the phase fraction, composition, and residual stress as functions of time and temperature.
||Planned: A print-only volume