About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
Presentation Title |
Compressive Behavior of Pure Polycrystalline Cobalt and Other HCP Metals Investigated Using Acoustic Emission |
Author(s) |
Adam Gres, Michal Knapek, Patrik Dobroň, Peter Minárik, František Chmelík |
On-Site Speaker (Planned) |
Adam Gres |
Abstract Scope |
To assess the dependency of the compressive behavior of pure polycrystalline cobalt on the residual fcc phase content, samples are prepared first undergoing isothermal annealing at different temperatures. This leads to recrystallization and grain growth, allowing for targeted modification of the microstructure. Annealing at such temperatures leaves residual high temperature fcc phase in the material. Additional thermal cycling around the phase transition temperature was applied. This leads to grain growth and a significant drop of the fcc phase content. Dependence of the compressive behavior on the microstructure is subsequently examined using deformation testing with constant speed of deformation combined with acoustic emission (AE). Additional testing was performed with Mg and Ti samples. Further analysis of acquired AE data provides an in-depth look at the deformation mechanisms that take place in the observed materials. Observed power law distribution of the AE event parameters confirms the collective nature of the dislocation motion. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, |