About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Environmental Degradation of Additively Manufactured Alloys
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Presentation Title |
Environmental Susceptibility of EBM Ti-6Al-4V as a Function of Print Direction in Seawater |
Author(s) |
Matthew McMahon, Nicholas Pizzolato, Fatou Cisse, Eric Dau, William Golumbfskie |
On-Site Speaker (Planned) |
Matthew McMahon |
Abstract Scope |
Ti-6Al-4V is a popular alloy for aerospace, oil and gas, biomedical, and naval applications due to its high corrosion resistance, light weight, and high strength. This alloy has proven compatible with additive manufacturing processes such as electron beam melting (EBM), which through powder bed heating can produce parts with relatively low residual stress and high toughness compared to similar AM methods. These attributes make EBM a desirable AM processing route for marine components, though numerous questions remain concerning differences in environmental susceptibility in comparison to legacy processing methods. This effort aims to understand the corrosion and stress corrosion susceptibility of EBM Ti-6Al-4V in seawater conditions as a function of print direction. Emphasis will be placed on porosity and surface characteristics for evaluation of flow-assisted corrosion, pitting, and stress corrosion susceptibility. Comparison will be drawn to conventional castings in order to identify optimization opportunities for marine EBM Ti-6Al-4V components. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Environmental Effects, Titanium |