| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
|
| Presentation Title |
Self-lubricating Ni-based Superalloy Composites Processed by Severe Plastic Deformation |
| Author(s) |
Manoel Kasalo, Sebastian Suarez, Andrea Bachmaier |
| On-Site Speaker (Planned) |
Manoel Kasalo |
| Abstract Scope |
Low friction and high wear resistance can result in a prolonged operating lifespan of mechanically stressed components. Both characteristics could be achieved in nanostructured self-lubricating metal matrix composites, by adjusting the matrix microstructure and the lubricant integration to it. In this work, high-pressure torsion (a severe plastic deformation technique) was used to incorporate solid lubricants (e.g., Graphite, MoS2) in different quantities into Ni-based superalloys. The aim is to determine which amount of solid lubricant and which deformation parameters ensure an improvement of the tribological performance, without compromising the mechanical properties of the composites. A better distribution of the solid lubricant phase was observed by scanning electron microscopy when the powders were colloidally mixed before the deformation process. Mechanical properties were evaluated by micro tensile tests and microhardness measurements, observing increased values in the latter. The self-lubricity of the composites was investigated by using a ball-on-flat tribometer. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Other |