About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Monitoring Defect Structure Evolution in Titanium Alloys using High-Energy X-ray Diffraction |
Author(s) |
Kenneth Peterson, Joel V Bernier, Jacob P.C. Ruff, Darren C Pagan |
On-Site Speaker (Planned) |
Kenneth Peterson |
Abstract Scope |
Cold dwell fatigue in titanium alloys is understood to consist of deformation localization, load transfer, and then failure at adjacent hard and soft grain pairings. However, it is currently difficult to predict precise locations of failure nucleation due to the interplay of deformation mechanisms, local loading conditions, and microstructural heterogeneity across length scales. Fortunately, the recent development of wide-dynamic range X-ray detectors now enable probing of 3D sample volumes to observe deformation across length scales and examine factors that contribute to cold dwell fatigue in situ, such as defect ordering and reconfiguration. In this study, high-dynamic range diffraction data collected from Ti-6Al-4V undergoing uniaxial tension and tension-only cyclic fatigue is analyzed using multiscale scattering and plasticity modeling to simultaneously characterize the evolution of defect structure ordering and intergranular interactions. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Titanium, Modeling and Simulation |