About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
Correlation of Microstructure and Damage Tolerant Properties of Additive Manufactured Ti-6Al-4V |
Author(s) |
Ralph W. Bush, Tessa Barbosa, Elijah Palm, Benjamin Smith |
On-Site Speaker (Planned) |
Ralph W. Bush |
Abstract Scope |
Microstructure, tensile properties, fracture toughness and fatigue crack growth properties of additive manufactured (AM) Ti-6Al-4V, fabricated via powder bed fusion were measured and compared to those of ingot fabricated mill (MA) and beta annealed (BA) products. The MA product microstructure was bimodal in nature, whereas the AM and BA product microstructures exhibited a fine lamellar structure. The grain/packet size of the AM product was 20 to 30 times smaller than for the BA product. Mechanical property / microstructure correlations reported in historical literature were observed. The coarse-grained lamellar BA product exhibited damage tolerant properties superior to those of the fine-grained AM product, which were superior to those of the bi-modal MA product. The MA material exhibited tensile properties superior to those of the AM product, which were superior to those of the BA material. Post-beta annealing of MA and AM products altered microstructures and improved damage tolerant properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Characterization |