| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
Flow Stress Behavior, Deformation Micro-Mechanisms and Microstructural Evolution of Heat-Treated Alloy 625 Using SASH Model |
| Author(s) |
Sonika Chahar, Suhrit Mula |
| On-Site Speaker (Planned) |
Sonika Chahar |
| Abstract Scope |
Ni-based superalloy 625 possesses high tensile strength, creep strength, fatigue strength and corrosion resistance at elevated temperatures, which make it a promising alloy for high-temperature applications. The current investigation aims to understand the microstructural evolution of cast alloy 625 during ageing treatment and its impact on tensile characteristics. The experimental procedure involves ageing treatment of the homogenized alloy at 700oC up to 1500h followed by evaluation of mechanical properties. Subsequently, microstructural characterization is conducted with the help of SEM-EDS and TEM. Furthermore, uniaxial tensile test of selected aged samples is performed at room temperature followed by fracture analysis. The variation in tensile characteristics with ageing time is correlated with the evolution of secondary phases and other microstructural features. Alongside, a dislocation activity-based phenomenological model is used to predict the flow stress/deformation behavior of the homogenized and aged samples, correlating microstructural features well with strain hardening characteristics. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Temperature Materials, Mechanical Properties, Phase Transformations |