| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2020
|
| Presentation Title |
Alloying for Precipitation Hardening in Chromium |
| Author(s) |
Mathias C. Galetz, Anke Silvia Ulrich, Petra Pfitzenmaier, Uwe Glatzel |
| On-Site Speaker (Planned) |
Mathias C. Galetz |
| Abstract Scope |
Refractory alloys based on chromium have been disregarded for a long time mainly due to its strong nitridation behavior above 1000°C and its accompanying embrittlement, when it transforms into a ceramic. Another challenge of such alloy system are their ductile to brittle transition temperature (DBTT) above room temperature. On the other hand, chromium offers a lower density compared to Ni, a high oxidation resistance along with high availability and competitive pricing.
Thus in this work a new class of heat treatable Cr-alloys is presented. Alloying with A15 forming elements (Ge, Si, Pt) or Mo that substitutes Cr in solid solution and A15 has a major impact on the microstructure, high temperature strength and oxidation resistance. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |