The dynamic recrystallization microstructure characterizations of hot-rolled Fe50Mn30Co10Cr10 high-entropy alloy during different cooling rates

Jinchen Yang; Xiaoyang Zhang; Xiaolan Kang; Huanqing Li; Hua Hou; Ling Yang; Yuhong Zhao

doi:10.1016/j.jmrt.2025.03.050

Journal of Materials Research and Technology (Mar 2025)

The dynamic recrystallization microstructure characterizations of hot-rolled Fe50Mn30Co10Cr10 high-entropy alloy during different cooling rates

Jinchen Yang,
Xiaoyang Zhang,
Xiaolan Kang,
Huanqing Li,
Hua Hou,
Ling Yang,
Yuhong Zhao

Affiliations

Jinchen Yang: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China
Xiaoyang Zhang: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China
Xiaolan Kang: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China
Huanqing Li: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China
Hua Hou: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China; School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, PR China
Ling Yang: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China; Corresponding author. School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan 030051, PR China.
Yuhong Zhao: School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China; Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, PR China; Institute of Materials Intelligent Technology, Liaoning Academy of Materials, Shenyang, 110004, PR China; Corresponding author. School of Materials Science and Engineering, MOE Jointly Collaborative Innovation Center for High-performance Al/Mg Based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, 030051, PR China.

DOI: https://doi.org/10.1016/j.jmrt.2025.03.050
Journal volume & issue: Vol. 35
pp. 7441 – 7454

Abstract

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This study investigated the dynamic recrystallization microstructure and recrystallization mechanisms of hot-rolled Fe50Mn30Co10Cr10 high-entropy alloy (HEA) combining the microstructural characterizations and the phase-field-crystal (PFC) simulations. For this purpose, hot rolling at 800 °C with 50% thickness reduction was carried out after cold rolling. The samples were cooled using two different methods: air cooling and water quenching. Microstructural characterization was conducted using electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). Dynamic recrystallized grains were identified as grains with a grain orientation spread (GOS) value less than 2.2°. The results indicate that under different cooling rates, the occurrence of martensitic phase transformation was almost completely suppressed due to the small grain size. Furthermore, continuous dynamic recrystallization (CDRX) was the predominant DRX mechanism, while discontinuous dynamic recrystallization (DDRX) played a supplementary role in the dynamic recrystallization process. As the cooling rate increased, the proportion of CDRX also increased. The result of this work not only elaborate cooling have an effect on the dynamic recrystallization mechanism, but provide a conference for optimizing microstructure and mechanical properties through thermomechanical process.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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