About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Titanium Technology
|
Presentation Title |
Influence of Microtextured Regions on Early Plasticity in Ti64 |
Author(s) |
Joseph Wendorf, Jean-Charles Stinville, Marie-Agathe Charpagne, McLean Echlin, Andrew Polonsky, Paul Dawson, Tresa Pollock |
On-Site Speaker (Planned) |
Joseph Wendorf |
Abstract Scope |
Titanium alloys have been extensively used throughout the cold section of jet engines for several decades due to their high strength to weight ratio and excellent fatigue performance. However, many titanium alloys develop microtextured regions (MTRs) during forging which significantly reduce dwell fatigue life. 3D EBSD datasets collected via Tribeam tomography enable characterization of the overall millimeter scale 3D structure of MTRs at high enough resolution to also study the micron scale structure of individual grains and grain neighborhoods. Grains that begin to yield far below the macroscopic yield strength are predicted via linear elastic finite element techniques operating on such a dataset, and these results are validated against experimental DIC measurements. The influence of extreme hard and soft grain neighborhoods found within MTRs as well as the importance of soft grains embedded in otherwise hard oriented MTRs will be discussed. |
Proceedings Inclusion? |
Planned: |