About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Micro-mechanical Investigation of a High-pressure Torsion Processed Nano-crystalline WCu Composite |
Author(s) |
Michael Burtscher, Markus Alfreider, Klemens Schmuck, Daniel Kiener |
On-Site Speaker (Planned) |
Michael Burtscher |
Abstract Scope |
In this study, the micro-mechanical properties of a high-pressure torsion processed WCu alloy were determined. To this end, a coarse-grained WCu rod material was deformed at room temperature and 200°C with 0.5, 5 and 50 turns, respectively. In the following, the microstructure was illuminated by SEM and TEM imaging, and the grain size of the respective material was determined by a customized watershed algorithm. The phase composition was analyzed using XRD measurements, while micromechanical properties were investigated using in-situ cantilever experiments. This enabled to determine the fracture toughness and J-integral, where a strong influence of the microstructural conditions could be determined. This phenomenon is largely governed by the remaining coarse W grains within the nanocrystalline WCu matrix, as well as the mechanical alloying of Cu in W and vice versa. Hence, the current work enables to identify favourable deformation conditions for optimised fracture toughness of WCu alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nanotechnology, Mechanical Properties, |