一种具有体心四方结构的新型共nial双相高熵合金

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-06-07 DOI:10.1016/j.intermet.2025.108868

Ning Xu , Dongpo Xuan , Han Guo , Yubo Huang , Xuming Liu , Shilei Li , Yan-dong Wang , Junsheng Wang

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引用次数: 0

摘要

体心四方（BCT）亚稳相通常在变形过程中出现，在热处理后很少出现。在此，我们通过高温处理开发了一种新的双相高熵合金（HEA），该合金具有约10 vol%的块状BCT和90 vol%的FCC相。我们设计的HEA具有良好的强度-延性平衡，并伴有特殊的断裂模式。这项工作不仅促进了对晶间裂纹行为的理解，而且为开发具有良好加工硬化的新型双相HEAs提供了策略。

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A novel CoCrNiAl duplex phase high entropy alloy featuring body-centered tetragonal structure

The body-centered tetragonal (BCT) metastable phases are usually observed during deformation and rarely after heat treatment. Here, we developed a novel dual-phase high-entropy alloy (HEA) featuring about 10 vol% blocky BCT and 90 vol% FCC phases by high temperature treatment. Our designed HEA exhibits a good strength–ductility balance, accompanied by a special fracture mode. This work not only advances the understanding of the intergranular cracking behaviors but also offers a strategy to develop new duplex HEAs with good work hardening.

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.