About this Abstract |
| Meeting |
2026 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 IV
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| Presentation Title |
Heating Rate Dependent Microstructural Evolution of Laser Powder Bed Fusion Additively Manufactured Ti-6Al-4V |
| Author(s) |
Donald W. Brown, Dale T. Carver, Clausen Bjorn, Savage Dan, Nathan Peterson, Calvin Lear, Stefano Checchia, Marco Di Michiel |
| On-Site Speaker (Planned) |
Donald W. Brown |
| Abstract Scope |
AM offers reductions in cost of the production of metallic components as well as the ability to create topologies that are not conventionally achievable. The Ti64 alloy was developed for casting applications with very slow cooling rates. Its property combinations are still desired for AM built parts but the higher cooling rates associated with AM result in metastable microstructures and distinct material properties compared to conventional components. Following the initial solidification and quench, the newly deposited material experiences several rapid re-heat cycles as more material is deposited. To predict the final microstructure of the as-built component, it is required to have a knowledge of the microstructure during these repeated thermal cycles. We report the results of in-situ diffraction experiments during repeated heating (~1000K/sec) of Laser Powder Bed Fusion (LPBF) Ti64. The evolution of the phase fraction, texture, internal stress, dislocation density and solute chemistry during these processes will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Titanium |