About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Thermodynamics and Kinetics of Alloys
|
Presentation Title |
Experimental Investigation and Thermodynamic Assessment of the Cr-Si Binary System |
Author(s) |
Kazushige Ioroi, Yuki Aono, Xiao Xu, Toshihiro Omori, Ryosuke Kainuma |
On-Site Speaker (Planned) |
Kazushige Ioroi |
Abstract Scope |
Cr-Si alloys are promising as high-temperature materials due to their high specific strength and oxidation resistance at high temperatures. The accurate phase diagram can guide the alloy design and heat treatment to enhance the mechanical properties of the Cr-Si alloys. However, reports on the phase equilibria, particularly in the Cr-rich portion, are limited because of the high melting point of Cr. In this study, phase equilibria in the Cr-Si binary system were evaluated experimentally and thermodynamically.
Transformation temperatures and the solubility ranges of each phase were determined by thermal and composition analyses. The single-phase region of the Cr3Si phase was found to tend to incline toward the Cr-rich side with increasing temperature. On the other hand, the Cr5Si3 phase has a solubility range, extending toward the Si-rich side. Thermodynamic assessment was conducted by the CALPHAD method based on the experimentally determined phase diagram. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Computational Materials Science & Engineering, High-Temperature Materials |