Irreversible phase transition of the Fe50Mn30Cr10Co10 high entropy alloy under stress

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-12-02 DOI:10.1063/5.0232551

Pan Wang, Lianyang Chen, Mingzhi Yuan, Jialin Li, Wenhao Li, Yi Yang, Shun Wan, Xin Li, Guoxia Wu, Xiaoling Zhou

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引用次数: 0

Abstract

The Fe50Mn30Cr10Co10 high entropy alloy has attracted research interest in recent years due to its ability to overcome the strength-ductility trade-off. A recent study reported that a nanolaminate dual-phase microstructure, derived from the bidirectional transformation of Fe50Mn30Cr10Co10 alloy under stress, might be the main reason for its exceptional mechanical properties. Here, we report a unidirectional and irreversible phase transition from a face-centered-cubic to a hexagonal-close-packed (HCP) structure in the Fe50Mn30Cr10Co10 alloy under stress, using the in situ high-pressure x-ray diffraction method. An almost pure HCP phase is obtained at pressures exceeding 20 GPa. It remains stable in further loading and unloading processes. Transmission electron microscopy analysis indicates that dislocation motion along the {111}⟨11 2¯⟩ slip system results in the irreversible phase transition and the formation of nanolamellar microstructures in the Fe50Mn30Cr10Co10 alloy. Our study provides insights into understanding the deformation mechanism of Fe50Mn30Cr10Co10 alloy and suggests the potential to design the alloy through high-pressure manufacturing.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.