| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Overcoming Strength-Ductility Trade-off through Periodic Spinodal Decomposition in Ferrous Medium-Entropy Alloy |
| Author(s) |
Hyojin Park, Farahanz Haftlang, Yoon–Uk Heo, Jae Bok Seol, Zhijun Wang, Hyoung Seop Kim |
| On-Site Speaker (Planned) |
Hyojin Park |
| Abstract Scope |
Achieving an ideal balance between strength and ductility in advanced engineering materials has been a long-standing challenge for researchers. Conventional methods for enhancing materials often reduce ductility by hindering dislocation movement. In the present study, we introduce a novel technique involving spinodal decomposition, where Cu and Al are introduced into a ferrous medium–entropy alloy. The matrix undergoes nanoscale periodic spinodal decomposition via a simple one–step aging procedure. The chemical variations within these structures lead to spinodal hardening, resulting in a doubled increase in strength that exceeds traditional precipitation hardening methods. Remarkably, the periodic structures effectively counteract strain localization problems, thereby preserving elongation and greatly improving mechanical strength. Spinodal decomposition, as an innovative method, offers high versatility and can be applied with minimal elemental additions, presenting a promising strategy for enhancing the mechanical properties of various alloy systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, |