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Meeting

2025 TMS Annual Meeting & Exhibition

Symposium

Advances in Multi-Principal Element Alloys IV: Mechanical Behavior

Presentation Title

E-8: Establishing Composition-Temperature-Grain-Strength Relationship of FCC Complex Concentrated Alloys

Author(s)

Dong Whan Kim, Heh Sang Ahn, Wook Ha Ryu, Hwi Yoon Jeong, Je In Lee, Eun Soo Park

On-Site Speaker (Planned)

Dong Whan Kim

Abstract Scope

FCC complex concentrated alloys (CCAs) with 3d transition metals have been reported to exhibit exceptional mechanical properties in extreme conditions. However, there is a large degree of freedom in the selection of elements in a CCA system, making it challenging to tailor-design novel alloys with desired properties. A new tool is required to indirectly predict the properties of unknown alloys. In the present study, A relationship between composition and mechanical properties of CCAs is suggested in terms of electronegativity difference. According to tensile test results under various grain sizes and temperature conditions, a positive correlation was found between the electronegativity difference and yield strength of the alloys. Furthermore, it was possible to construct a nonlinear equation including the effects of temperature and grain size. These results could provide a new perspective on not only the prediction of mechanical properties of unknown alloys, but tailor-designing new alloy systems with desired properties.

Proceedings Inclusion?

Planned:

Keywords

High-Entropy Alloys, Mechanical Properties,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Bidirectional Transformation in a Low Energy Interface Engineered Metastable High Entropy Alloy Under Dynamic Loading

Characteristic Dislocation Slips in Polycrystalline HfNbTiZr Equi-Atomic Alloy

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Computational Design of Cost-Effective High-Entropy Thermal/Environmental Barrier Coatings

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Damage Tolerance in bcc vs. fcc High-Entropy Alloys

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Deformation Induced Transformation in Metastability Engineered Alloys

Design of High Performance Fe-Based Superalloys for Elevated Temperature Applications

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E-12: High-Density Nanoprecipitates and Phase Reversion via Maraging Enable Ultrastrong Yet Strain-Hardenable Medium-Entropy Alloy

E-13: In-Situ Compression of Al5Co35CrFe20Ni5 Alloy Studied Using Synchrotron Radiation

E-14: In-Situ Deformation Study of Non-Shearable Nanodispersion Strengthened Refractory Complex Concentrated Alloys

E-15: Investigation of Elastic and Plastic Deformation Behavior of Nature Selected Refractory High Entropy Alloy

E-16: Low Cycle Fatigue of a Medium Entropy Alloy with Short-Range Ordering

E-17: Mechanical Behavior of 16 Refractory High Entropy Alloys Under Compressive and Tensile Stress: A Molecular Dynamics Study

E-18: Microstructural Evolution and Mechanical Behavior of HfTiZrNbx Refractory High-Entropy Alloys Under Different Annealing Conditions

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E-20: Modeling Dense Alloys in Discrete Dislocation Dynamics

E-21: Overcoming Strength-Ductility Trade-Off Through Periodic Spinodal Decomposition in Ferrous Medium-Entropy Alloy

E-22: Oxidation Behavior of Low-Density Non-Equiatomic AlCuFeNiTi High Entropy Alloy

E-23: Refractoriness, Thermal Expansion Behavior and Microstructure Stability at 1200�C of an Equimolar Cast CoNiFeCr Alloy and Its Versions with Addition of Titanium or of Tantalum

E-24: Revealing the Deformation Mechanism Competition in Multi-Principal Element Alloys by Nanobending Experiments

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E-26: Stretch Formability and Cryogenic Environmental Applicability of Fex(CoNi)90-xCr10 Ferrous Medium-Entropy Alloys

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E-30: Welding-Driven Compositional Heterogeneity Enhances Cryogenic Mechanical Properties in Metastable Ferrous Medium-Entropy Alloy Welds

E-3: Development of γ'-Strengthened Medium-Entropy Alloys with Mitigated Mechanical Instability at Extremely Low Temperatures

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