About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
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High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond IV
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Presentation Title |
F-5: Effects of Laser Shock Peening Surface Modification on Oxidation Behavior of NbTi-X
Refractory Complex Concentrated Alloys |
Author(s) |
Ugochukwu Philip Ochieze, Abdulquadri Tobi Oriola, Ravi Kumar, Sravya Josyula, Matthew Steiner, Eric John Payton |
On-Site Speaker (Planned) |
Ugochukwu Philip Ochieze |
Abstract Scope |
Laser shock peening surface treatments on as-cast NbTi-X refractory complex concentrated alloys (RCCAs) will be presented, with the microstructure before and after surface treatment characterized through analytical electron microscopy and X-ray diffraction. The impact of the modified microstructure and the induced near-surface residual stresses on the oxidation behavior will be assessed, with special attention paid to temperatures where multiple phases are anticipated to be in equilibrium. RCCAs are candidate materials for extreme environment applications but are generally limited by their oxidation behavior, and prior research on this class of alloys has often focused only on elevated temperatures, where these alloys form a solid solution, despite most of these alloys being multi-phase at lower temperatures. This works presents an important shift from much of the literature to date, which has focused on the properties of arc-melted button castings,to conditions more representative of a final processed state for service. |