About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Examining Hot Corrosion Crack Tip Arrest through Advanced Microscopy Analysis of Ni-superalloy CMSX-4 |
Author(s) |
Maadhav Kothari, Andy Holwell, Hrishikesh Bale, Simon Gray, Jonathan Leggett |
On-Site Speaker (Planned) |
Maadhav Kothari |
Abstract Scope |
Single crystal Ni superalloys are typically are used in power generation and aviation applications due to their unique properties. Recently, incidents of failure due increased temperature around root blade regions has caused Type II hot corrosion leading to cracking in blade roots resulting in catastrophic failure. Understanding the failure mechanism and crack characterisation is vital in solving this industrial issue. Here we demonstrate a unique workflow of characterization using micro computer tomography, FIB-SEM and laser lamellar preparation in order to characterize crack tips and crack stress. By extracting the fracture tip, both crystal plasticity and crystal deformity can be studied in detail resulting in orientation tomography of the corroded region of stress. Combining this correlative workflow we are able to demonstrate a unique technique in c-ring analysis and identifying structural defects not visible using typical microscopy techniques. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, High-Temperature Materials, Environmental Effects |