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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advances in Multi-Principal Element Alloys V: Mechanical Behavior
Presentation Title CALPHAD-Guided Development and Mechanical Evaluation of Dual-Phase CoFeNiVTi Alloys
Author(s) Andrew R. Roginski, Bernard Gaskey, Michael D. Sangid, Weinong (Wayne) W. Chen, Saryu J. Fensin
On-Site Speaker (Planned) Andrew R. Roginski
Abstract Scope This work investigates the design and mechanical behavior of dual-phase CoFeNiVTi multi-principal element alloys (MPEAs). This combination of elements can form a stable dual-phase microstructure with ordered BCC and disordered FCC structures. A CALPHAD-based approach was used to tailor the compositions of these individual phases to activate deformation mechanisms such as transformation-induced plasticity (TRIP) or the shape-memory effect (SME) for improved mechanical performance. Prototype compositions were manufactured, and their mechanical properties were evaluated under both quasi-static and high strain-rate conditions using a split-Hopkinson pressure bar (SHPB). Microstructural assessment before and after deformation enabled analysis of phase distribution and deformation behavior. These insights provide important composition-processing-structure-properties relationships to enable feedback for future computational MPEA design. This study contributes to the growing body of MPEA research by demonstrating the effectiveness of dual-phase microstructure design in achieving balanced mechanical properties across varied loading rates.
Proceedings Inclusion? Planned:

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