| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials
|
| Presentation Title |
Microstructure Evolution During Tensile Deformation of Polycrystalline Cobalt |
| Author(s) |
Frantisek Chmelik, Michal Knapek, Patrik Dobron, Mayerling Martinez, Eric Hug |
| On-Site Speaker (Planned) |
Frantisek Chmelik |
| Abstract Scope |
The microstructure evolution of polycrystalline cobalt (hexagonal close packed structure) in rolled condition and at different stages of tensile straining has been studied. The deformation mechanisms were identified by acoustic emission testing and transmission electron microscopy. Plastic deformation starts by dislocation glide which is accompanied by twinning, subsequently. Four single twinning modes were identified, from which two types correspond to tensile strain and two types to compressive strain (with respect to the c direction), double twins were also observed. A relative importance of various twinning systems is estimated and it is shown that the vast majority of twins correspond to the {10-12} twinning system. |
| Proceedings Inclusion? |
Planned: |