About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
Presentation Title |
Expansion of Natural Mixing Guided Design via Understanding the Solidification Behavior |
Author(s) |
Jae Kwon Kim, Min Seok Kim, Eun Soo Park |
On-Site Speaker (Planned) |
Jae Kwon Kim |
Abstract Scope |
Currently, the increasing demand for improved performance and efficiency in high-temperature structural materials spotlights the potential suitability of BCC refractory high entropy alloy (RHEA). However, systematic alloy design is challenging due to the similar fractions of many major elements in RHEA. A unique method, "Natural Mixing Guided Design (NMGD)," utilizes the classification characteristics of specific elements during the natural solidification of a master alloy composed of multiple BCC refractory elements. This allows the creation of single-phase RHEA with excellent phase stability through a simple melting-solidification process. Despite these advantages, the specific mechanisms of NMGD are not fully understood, limiting its universal application. This study investigates the solidification behavior of NMGD using thermodynamic calculations and experimental approaches to elucidate its mechanisms. We discovered 20 RHEA alloys with excellent phase stability using this method. Our research introduces a new paradigm in RHEA alloy design, expansion the alloy design method selected by nature. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Solidification, Other |