| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
High Temperature Wear and Deformation Behavior of Compositionally Complex Oxide Formed on Metal Surfaces |
| Author(s) |
Zhengyu Zhang, Wenjun Cai |
| On-Site Speaker (Planned) |
Wenjun Cai |
| Abstract Scope |
Critical current and future technologies require structural materials that can withstand high temperature frictional contact in an oxidative environment. Under such conditions, the metal surfaces reacts with the high temperature air to form a compositionally complex oxide layer, aka glaze layer, whose mechanical properties governs the overall tribological response. In this study, the glaze layer formed during high temperature wear of Ni-based superalloys are investigated as a function of heat treatment. A small wear speed of 0.01 m/s was employed to allow adequate oxidation between successive wear passes to study the glaze layer formation. Tribological properties, surface and subsurface microstructure and composition were analyzed using multi-scale materials characterization (e.g. SEM/EDS, XRD, and XPS) and nanomechanical measurements. These experimental results are then integrated with DFT calculation results to shed light on the future manufacture and design of compositionally complex alloys and high entropy oxides for high temperature applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Other |