Lightweight Co-free eutectic high-entropy alloy with high strength and ductility by casting

Authors

Wen Chen
et. al.

Publication Date

2023

Journal or Book Title

Materials Research Letters

Abstract

We report a cast light-weight dual-phase eutectic high-entropy alloy (EHEA) of Ni₄₉Fe₂₈Al₁₇V₆ that comprises of alternating FCC and ordered B2 lamellae. Such lamellar EHEA exhibits a superior tensile strength of ∼ 1.3 GPa in combination with a large uniform elongation of ∼ 26%, well surpassing those of other state-of-the-art cast EHEAs. The high strength-ductility synergy originates largely from the extensive dislocation activities in both FCC and B2 lamellae. In addition, the martensitic transformation of the B2 lamellae during deformation further promotes the work hardening capability to enhance the tensile strength and ductility.

DOI

https://doi.org/10.1080/21663831.2023.2284328

Pages

26-33

Volume

12

Issue

1

License

UMass Amherst Open Access Policy

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 License.

Recommended Citation

Chen, Wen and et. al., "Lightweight Co-free eutectic high-entropy alloy with high strength and ductility by casting" (2023). Materials Research Letters. 653.
https://doi.org/10.1080/21663831.2023.2284328