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Meeting

2025 TMS Annual Meeting & Exhibition

Symposium

Advances in Multi-Principal Element Alloys IV: Mechanical Behavior

Presentation Title

Fracture Toughness and Deformation Mechanisms in Cantor-Based Medium Entropy Alloys

Author(s)

Sheron S Tavares, David Cook, Punit Kumar, Robert O Ritchie, Bingfeng Wang, Marc A. Meyers

On-Site Speaker (Planned)

Sheron S Tavares

Abstract Scope

Five Cantor-based equiatomic quaternary alloys, undergoing identical homogenization (1150 C/ 24 hours) and thermomechanical treatments (30 pct upsetting in compression followed by 900 C/I hour) generated widely different microstructures with significant changes in the resultant compressive, tensile, strengths and fracture toughness. These results demonstrate that the composition plays a pivotal role in the properties of the alloys. The fracture toughness ranged from 25 MPam1/2 for the CrMnFeCo alloy to 340 MPam1/2 for the MnFeCoNi alloy. The progression of the cracks and principal toughening and embrittling mechanisms are analyzed for the five equiatomic Cantor-based alloys.

Proceedings Inclusion?

Planned:

Keywords

Mechanical Properties, High-Entropy Alloys, Characterization

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