| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
2021 Technical Division Student Poster Contest
|
| Presentation Title |
Utilizing CALPHAD Methods to Determine Phases in a Compositionally Complex Fe-Cr-based Alloy |
| Author(s) |
Kaitlyn Paulsen, Alexandra Loumidis, Patrick Conway, Karen Privat, Kevin Laws, Lori Bassman |
| On-Site Speaker (Planned) |
Kaitlyn Paulsen |
| Abstract Scope |
Fe-Cr-based ferritic steels exhibit excellent corrosion resistance. However, their use and application are limited by the formation of a brittle sigma phase at intermediate temperatures. Prior experiments demonstrated that the addition of Mn and small amounts of Al eliminates the sigma phase for a specific range of compositions. In this work, extrapolating from binary and ternary systems, CALPHAD methods were used to explore the boundaries of the quaternary Fe-Cr-Mn-Al composition space for which sigma is eliminated. Results from ThermoCalc’s TCFE7 (Iron) and TCHEA4 (High Entropy Alloy) databases were cross-compared with one another and with experimental results. This work helps determine the applicability of ThermoCalc predictions for this compositionally complex system and is being utilized to refine further experiments. |
| Proceedings Inclusion? |
Undecided |