About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Slip Analysis in Ti-6246 Alloy During Dwell Fatigue |
| Author(s) |
Yukthesh Venkat Surisetti, Vasisht Venkatesh, Michael Mills, G. Babu Viswanathan |
| On-Site Speaker (Planned) |
Yukthesh Venkat Surisetti |
| Abstract Scope |
Dwell fatigue in titanium alloys is a critical factor limiting the service life of aircraft engines. Key parameters such as phase morphology, grain boundaries, and crystallographic texture are presumed to play pivotal roles in the nucleation and propagation of dwell fatigue cracks in these alloys. In this study we examine early slip and propagation in the α/β laths of Ti-6246 during insitu-dwell fatigue testing. Preliminary slip analysis is done tracking the propagation and the pile up which is correlated with the orientation of the colonies using high resolution EBSD and spherical indexing. TEM analysis is performed to understand the interaction of the slip with the α/β interface. The effect of secondary α laths present in the β regions and adjacent hard grain on the propagation of slip are studied. |