About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
Presentation Title |
G-20: Effect of Machining and Surface Microstructure in Fatigue Life for Aerospace Titanium Alloys |
Author(s) |
Daniel Suarez, Bradley Wynne, Pete Crawforth, Katharine Fox, Martin Jackson |
On-Site Speaker (Planned) |
Daniel Suarez |
Abstract Scope |
Aeroengine parts are subjected to very demanding working conditions, and therefore, it is key to ensure the structural integrity of the critical parts in service. The material of interest is the titanium alloy Ti-6246 used in the IP compressor disks of the new Trent XWB engine.
This study is focused in understanding how microstructural or machining induced features affect fatigue life. One technique that can evaluate the fatigue life is the 4-point bend test, which is inexpensive, enables assessment of a range of machining parameters and the ability to analyse different part locations.
Material is studied in before and after machining states. Specimens removed by EDM are tested and characterised. The fatigue life of the coupons is compared, as a function of the different surface conditions and the extracted location. Key interests will be to determine the role of upstream induced texture and surface modification through machining on fatigue life. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |