| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Effects of the Orientation of the α β Interphase on the Time-dependent Fatigue Behavior of Ti-6Al-4V |
| Author(s) |
Kartik Kapoor, Priya Ravi, Jun-Sang Park, Ryan Noraas, Vasisht Venkatesh, Michael D. Sangid |
| On-Site Speaker (Planned) |
Michael D. Sangid |
| Abstract Scope |
A crystal plasticity finite element (CPFE) model for dual phase (α and β) Ti-6Al-4V is developed, explicitly accounting for both phases. This model is calibrated using a systematic optimization routine, utilizing time-dependent cyclic and monotonic macro-scale experiments and the lattice strains for the α and β phases from in situ high-energy x-ray diffraction experiments, for multiple Ti-6Al-4V pedigrees with varying β volume fractions. Depending on the processing route, Ti-6Al-4V can exist in a wide number of microstructural forms, which often results in the α and β phases either having well-aligned slip systems (following the Burgers orientation relationship (BOR)) or having misaligned slip systems (not following the BOR). In this work, the fully-calibrated CPFE model is used to gain a comprehensive understanding of deformation behavior of Ti-6Al-4V, specifically, the effect of microstructures that follow the BOR (or not) on time dependent cyclic loading. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |