About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
L-48: Deformation Behaviour of Novel Beta-Ti Bcc-Superalloys |
Author(s) |
Vincent Gagneur, Tianhong Gu, Alexander Knowles |
On-Site Speaker (Planned) |
Vincent Gagneur |
Abstract Scope |
Increasing the operating temperature of aerospace gas turbines is a key means to improve their fuel efficiency for both economic and environmental reasons, the main limitation being the capability of materials employed. Our work focusses on new Beta-titanium ‘bcc-superalloys’ to unlock the high melting point refractory metals of Mo and Nb paired with the low-density of Ti. Inspired by the widely used Nickel superalloys, these bcc-superalloys exploit a combination of a β matrix with ordered-bcc β’ precipitates. However, such bcc-superalloy systems are often found to be too brittle for commercial applications, and the lack of mechanistic understanding concerning their mechanical behaviour limits ductilisation strategies. In this project, newly developed β-β’ Ti-TiFe & derivative alloys are investigated using micromechanical testing coupled with digital image correlation (DIC). This analysis offers new insights as the deformation behaviour in such bcc-superalloys, in particular load partitioning, and slip plane compatibility between β and β’ phases. |
Proceedings Inclusion? |
Planned: |
Keywords |
Titanium, Characterization, Mechanical Properties |