|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||In Situ Structure and Microstructure Investigation of Heat Treatment’s Effect on AM Inconel 625
||Fan Zhang, Lyle E Levine, Andrew A Allen, Eric A. Lass, Sudha Cheruvathur, Mark R. Stoudt, Maureen E Williams, Yaakov Idell, Greta Lindwall, Carelyn E. Campbell
|On-Site Speaker (Planned)
Additive manufacturing (AM) of metals features repetitive rapid melting and solidification in the build process, which often leads to compositional and microstructural heterogeneities. If untreated, such heterogeneities could adversely affect materials performance. Heat treatments, including stress-relieving, solutionizing, and ageing treatments, are often used to optimize the microstructures of AM materials. We have integrated synchrotron-based ultra-small angle X-ray scattering, small-angle X-ray scattering, and X-ray diffraction to simultaneously interrogate the microstructure evolution and detect emerging structural phases during various in-situ heat treatment procedures for a wide range of AM materials, such as Inconel 625, ATI 718+, and 17-4 steel. Here, we will focus on our studies of AM Inconel 625. Particularly, we will report the homogenization kinetics and the microstructural and structural evolution of precipitates and carbides. These results will be directly compared with predictions of thermo-kinetic models aimed at improving our understanding of the process-structure-properties of these alloys.
||Planned: Supplemental Proceedings volume