About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
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| Presentation Title |
Deformation Micromechanisms in Different Generation Ni-Based Single Crystal Superalloys with a Focus on TMS-238 Specific Behavior |
| Author(s) |
Benoit Mansoz, Kyoko Kawagishi, Satoshi Utada, Pierre Caron, Jonathan Cormier, Florence Pettinari-Sturmel |
| On-Site Speaker (Planned) |
Florence Pettinari-Sturmel |
| Abstract Scope |
The chemical composition of Ni-based single crystal superalloys plays an important role in their low temperature tensile behavior, which may have a significant impact on the fatigue durability. To better understand the mechanisms involved in the early stages of plastic deformation at these temperatures, Ni-based single crystal superalloys with different chemical compositions were tensile tested in the range 650°C – 950°C / 5.0 x 10-4 s-1. Large yield strength differences, up to 250 MPa, were highlighted by the tensile tests as well as a high work hardening rate for TMS-238 alloys. TEM observations were performed on the various Ni-based superalloys strained at 0.5% and 1% of plastic deformation. In the case of TMS-238, the deformation mechanisms are characterized by a homogeneous deformation, high density of dislocations in the g-matrix and a high density of stacking faults. These microstructural features are quantitatively analyzed to interpret the macroscopic tensile behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Temperature Materials, Mechanical Properties |