|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||A-14: Development of Diffusion Mobility Descriptions for Additive Manufactured Ti-6Al-4V
||Greta Lindwall, Kil-Won Moon, Yaakov Idell, Maureen E Williams, Fan Zhang, Andrew J Allen, Nikolas Hrabe, Lyle E Levine, Carelyn E Campbell
|On-Site Speaker (Planned)
Essential for the success of additive manufacturing using electron beam melting (EBM) is control of the microstructure evolution during post-processing of the as-built part, e.g. during hot isotactic pressing (HIP). In this work, we study the role of diffusion during HIP of an EBM manufactured Ti-6Al-4V alloy. A CALPHAD-diffusion mobility description for diffusion in the α and β phase in the Ti-Al-V system is developed using information obtained from diffusion-couple experiments. The developed model is used to simulate diffusional reactions under conditions relevant to HIP post-processing. The results are discussed based on comparison with experimental investigations of the microstructure evolution using combined in situ X-ray probe (USAXS/SAXS/WAXS) measurements.
||Planned: Supplemental Proceedings volume