About this Abstract |
Meeting |
2020 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
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Presentation Title |
In-situ Synchrotron Measurements of Microstructure Development at Fusion Boundary in Wire Feed AM of Ti-6Al-4V |
Author(s) |
Nathan Johnson, Donald W Brown, John Carpenter, Aaron P Stebner |
On-Site Speaker (Planned) |
Nathan Johnson |
Abstract Scope |
Wire feed additive manufacturing is a unique advanced manufacturing technique that allows large scale, fast manufacturing of near net components due to its fast deposition rate and the relatively large amount of material deposited at once. These advantages also create large thermal gradients during layerwise deposition, which can lead to grain recrystallization and regrowth at the boundary layer, diffusion of alloying species in multiphase materials, and texture development throughout the part. Experiments conducted at the Advanced Photon Source characterized Ti-6Al-4V microstructure development at the fusion boundary between layers in wire feed AM of Ti-6Al-4V. Phase fractions, lattice strains, and texture development were monitored during multipass manufacturing of a wall structure. Microstructure development was studied as a function of the rate of material deposition, the time between depositions, and the amount of material deposited. Texture was characterized during the build process to monitor grain re-orientation during the build process. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |