About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-Grained and Heterostructured Materials (UFGH) XIV
|
| Presentation Title |
Microstructural Gradients in Cobalt Investigated Through Quantitative Characterization |
| Author(s) |
Nathan Brown, Brian J. Jensen, David P. Field |
| On-Site Speaker (Planned) |
Nathan Brown |
| Abstract Scope |
Heterogeneous microstructures can enable engineered materials to have enhanced strength and ductility, outperforming homogeneous structures of similar composition. The development of such microstructures often involves the formation and control of gradients. Pure cobalt is unique in that it undergoes an allotropic phase transformation between its high-temperature face-centered cubic (FCC) phase and its low-temperature hexagonal close-packed (HCP) phase, allowing for the control of additional microstructural constituents. This study investigates the microstructural evolution of cobalt subjected to high-pressure torsion (HPT) to elucidate the effects of gradient microstructures and the corresponding morphological, phase, and defect density gradients induced during severe plastic deformation. To understand these imposed gradients, quantitative characterization techniques aid in correlating the structure-property relationship of these materials. The techniques used in this work to fabricate and characterize gradient structures provide a pathway to tailor microstructures for enhanced mechanical properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Phase Transformations |