| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
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| Presentation Title |
Pairing X-ray Synchrotron Imaging, In-situ Absorption Measurements, Thermal Modeling, and Post-mortem Metallography Towards the Understanding of the Solidification Microstructures in Ti-6Al-4V for Additive Manufacturing Applications |
| Author(s) |
Nicholas A. Derimow, Edwin J. Schwalbach, Jake T. Benzing, Alexandria B. Artusio-Glimpse, Nikolas Hrabe, Brian J. Simonds |
| On-Site Speaker (Planned) |
Nicholas A. Derimow |
| Abstract Scope |
X-ray synchrotron imaging was carried out in conjunction with in-situ integrating sphere radiometry for real-time energy absorption measurements during the melting of Ti-6Al-4V alloy. The resulting post-mortem solidification microstructures were then studied via electron microscopy and electron backscatter diffraction (EBSD) to elucidate the changes in microstructure resulting from the laser melting process. We report on the solidification and microstructural evolution of Ti-6Al-4V resulting from the imaging/absorption melting experiments. In particular, there were significant changes to the alpha/beta phase fraction in the unmelted heat-affected zone (HAZ) across all test cases. A thermal conduction model incorporating the in-situ absorption data is used to calculate the thermal histories and diffusion distances along the HAZ in these alloys in order to gain insight into the solid-state phase transformations that occurred beneath the melt pool in these alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Phase Transformations |