| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recent Advances in Titanium Science and Technology: MPMD/SMD Symposium Honoring Professor Dipankar Banerjee
|
| Presentation Title |
Advances in Understanding Cold Dwell Fatigue in Titanium Alloys |
| Author(s) |
Vasisht Venkatesh, Adam Pilchak, David Furrer, Sergei Burlatsky |
| On-Site Speaker (Planned) |
Vasisht Venkatesh |
| Abstract Scope |
Cold dwell fatigue in titanium alloys is a complex phenomenon influenced by multiple critical factors. Dipankar Banerjee's decades-long research has significantly advanced our understanding of this issue. Alloy composition is crucial, with near-α and α+β alloys containing high α-phase volume fractions showing high susceptibility. Microstructural features, particularly α-grain clusters with small misorientations (i.e., microtexture regions), contribute substantially to dwell fatigue debits. The interplay of dwell time and stress levels during hold periods dramatically impacts fatigue life reduction. Temperature sensitivity is notable, with the dwell effect typically diminishing above 200°C. This presentation reviews the current state of knowledge regarding the cold dwell fatigue mechanism, highlighting Banerjee's contributions. It also explores the development of physics-based computational methods for predicting component behavior. These insights are critical for advancing alloy design and improving component lifing strategies in aerospace applications, where the consequences of dwell fatigue can be severe. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, ICME, Mechanical Properties |