Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C

Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C

The AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) presents a promising balance between high strength and ductility, with its excellent mechanical properties maintained up to 600–700 °C. C doping has been shown to further enhance its strength. However, the phase stability of the alloy remains unce...

Full description

Saved in:
Bibliographic Details
Main Authors: Y.S. Wang, J.Q. Yao, D.X. Wang, S.R. Li, Y. Shi, Z.H. Yin, X.P. Dong, X.W. Liu
Format: Article
Language:English
Published: Elsevier 2025-04-01
Series:Next Materials
Subjects:
Eutectic high-entropy alloy
Microstructure
Cast
Phase stability
Online Access:http://www.sciencedirect.com/science/article/pii/S2949822824003496
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) presents a promising balance between high strength and ductility, with its excellent mechanical properties maintained up to 600–700 °C. C doping has been shown to further enhance its strength. However, the phase stability of the alloy remains uncertain. This study evaluated the microstructure and phase stability of both the as-cast AlCoCrFeNi2.1 EHEA and its C-doped counterpart, (AlCoCrFeNi2.1)97C3, at 600 °C. After 20 days of annealing, the eutectic structure of the AlCoCrFeNi2.1 EHEA exhibited slight coarsening in localized areas without phase decomposition. In contrast, the C-doped alloy developed needle-like and granular precipitates within the BCC phase.
ISSN:2949-8228

Similar Items