About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Purveyors of Processing Science and ICME: A SMD Symposium to Honor the Many Contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin
|
Presentation Title |
Hierarchical Multiscale Modeling of Microtextured Regions in Ti-6242 during Alpha/beta Processing |
Author(s) |
Timothy Truster |
On-Site Speaker (Planned) |
Timothy Truster |
Abstract Scope |
Ti-6242 is a near alpha titanium alloy, which has excellent high-temperature creep resistance and is widely used in jet engine compressors. This alloy is susceptible to creep fatigue failure under dwell loading below 473 K. The existence of microtextured regions (MTRs) contributes significantly to this fast crack propagation. Previous investigations based on crystal plasticity finite element (CPFE) simulations have demonstrated the relationship between breakdown efficiency and loading direction during alpha + beta mechanical processing. In this talk, the behavior of MTRs with realistic initial microstructure is presented using a hierarchical multiscale modeling framework, and the microscale results are analyzed in detail to understand the behavior of MTRs under different loading conditions. It is shown that a hierarchical multiscale model with realistic initial microstructure at the microscale can reflect the influences from different strain paths, initial orientation distributions, and positions of the region simultaneously on the MTR breakdown efficiency. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |