| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals
|
| Presentation Title |
Development of Heat-treatable Crss-Cr3Si-based Alloys: Microstructure, Oxidation, and Creep |
| Author(s) |
Anke Silvia Ulrich, Petra Pfizenmaier, Uwe Glatzel, Mathias Christian Galetz |
| On-Site Speaker (Planned) |
Mathias Christian Galetz |
| Abstract Scope |
Crss-Cr3Si-based alloys are promising candidates in the field of refractory metals for high temperature applications. In comparison to the commonly used Ni-base superalloys, these materials offer possible higher working temperatures and lower densities. In addition, Cr is the only refractory metal which intrinsically builds an oxide scale suitable for protecting the alloy from detrimental oxidation. Si improves the oxide scale formation even further as well as high temperature strength by Cr3Si formation. In this study it was found, that the addition of further alloying elements such as Mo, Ge, and Pt lead to an improvement in creep properties (Mo), oxidation resistance (Ge), and nitridation resistance (Pt) by simultaneously maintaining the two-phase microstructure. Tests were conducted at temperatures up from 980 °C. The microstructures, scales, and reaction products were investigated using XRD, SEM, EPMA, and Image Analysis. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Environmental Effects |