|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||Study on the Effects of Microsegregation, Temperature, and Stress on IN625 Microstructures by Phase Field Simulations
||Trevor Keller, Jonathan Guyer
|On-Site Speaker (Planned)
High levels of microsegregation near melt pool boundaries promotes precipitation of deleterious phases in additively manufactured parts. It is desirable, at a minimum, to limit growth of such particles during post-processing. While Ni-based superalloys are chemically and microstructurally complex, a minimally representative model has been implemented using the phase field method with contributions from diffusion and solid state phase transformations with misfit and residual stress. Initial conditions for the simulations are informed by experimental characterization of additively manufactured Ni-based superalloy parts using electron and X-ray techniques. The effects of microsegregation and residual stress on deleterious particle evolution will be discussed for representative isothermal heat treatments.
||Planned: Supplemental Proceedings volume