| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials: Sustainable and Eco-Friendly Material Development and Applications
|
| Presentation Title |
Innovative Processing of Ni-Based Superalloy Composites Reinforced With Graphite |
| Author(s) |
Manoel Kasalo, Sebastian Suarez, Andrea Bachmaier |
| On-Site Speaker (Planned) |
Andrea Bachmaier |
| Abstract Scope |
Friction and wear are common problems with mechanical components that move relative to each other. In order to extend their service life and be environmentally friendly, low friction and high wear resistance are required. Both can be achieved in nanostructured self-lubricating metal matrix composites (MMC). This study discusses the development of graphite-reinforced Inconel 718 MMCs for high-temperature applications produced by severe plastic deformation (SPD) using powder blends. First, a pre-treatment by colloidal mixing is performed, which reduces the agglomeration of graphite particles and improves the homogeneity of the powder mixture. Scanning electron microscopy confirms the formation of a nanocrystalline matrix microstructure after SPD. Comprehensive statistical image analysis is used to investigate graphite evolution as a function of graphite concentration and SPD processing method. Raman spectroscopy show the structural state of the graphite, which exhibits structural degradation but no amorphization with constant crystalline domain sizes in the range of 15 nm. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Composites, Process Technology |