About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Materials for High Temperature Applications: Next Generation Superalloys and Beyond
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Presentation Title |
Observation of Multiply Coherent Grains in Ni-Based Superalloy LSHR |
Author(s) |
Cameron R. Hale, Brady Dowdell, Victoria Mayne Miller |
On-Site Speaker (Planned) |
Cameron R. Hale |
Abstract Scope |
The primary gamma prime phase plays a critical role in controlling grain size evolution during thermomechanical processing of polycrystalline Ni superalloy. Recently, multiply coherent grains (MCG), or gamma grains containing multiple coherent primary gamma prime particles have been observed in the Ni-base superalloy LSHR over a range of thermomechanical processing conditions. These MCGs would provide stronger Zener pinning pressure than a conventional incoherent array of primary particles, so understanding their formation is important. MCGs in this paper are quantitatively characterized using energy dispersive spectroscopy (EDS) paired with electron backscatter diffraction (EBSD) techniques. Potential explanations for their formation and implications on the microstructural effects are discussed. |
Proceedings Inclusion? |
Planned: |