| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
An Investigation into the Effect of Primary Gamma Prime Stimulated Metadynamic Recrystallization on Supersolvus Grain Sizes in Ni Superalloy LSHR |
| Author(s) |
Eric J. Payton, Jared M Shank, Kayla S Evans, Denielle E Ricciardi, Victoria M Miller |
| On-Site Speaker (Planned) |
Eric J. Payton |
| Abstract Scope |
Recent work has generated considerable interest in some peculiarities in the recrystallization behavior of Ni superalloys, in particular the heteroepitaxial recrystallization mechanism and evidence of primary gamma prime reducing the barrier to nucleation during recrystallization. Grain size control in Ni superalloys is critical to their performance in turbine engine applications, and different grain sizes are optimal for fatigue resistance in the bore and creep resistance at the rim. An improved understanding of the role of dynamic and metadynamic recrystallization on grain size is needed to advance models of microstructure evolution during processing of these alloys. In this work, we systematically vary how the primary gamma prime phase affects recrystallization in the Ni superalloy LSHR through different subsolvus soak time, strain rate, and strain levels, then investigate how these variations in subsolvus dynamic and metadynamic recrystallization affect the matrix grain size after supersolvus heat treatment. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Characterization, Copper / Nickel / Cobalt |