镁熔体中AlTM金属间化合物通过反向包晶反应的演化机理研究

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-06-16 DOI:10.1016/j.intermet.2025.108879

Hongfu Su, Tong Gao, Xiangfa Liu

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引用次数: 0

摘要

金属间化合物的调制一直是金属材料领域的一个重要研究课题。在本研究中，将Al6Mn、Al11Ce3、Al13Fe4和Al3Y等一系列AlTM相颗粒通过不同保温时间引入Mg熔体中。结果表明，原始的粗颗粒全部开裂为细小的分散体，晶体结构的演化同时发生。析出相分别为Al8Mn5、Al2Ce、Al5Fe2和Al2Y，这些相的al贫化程度较高，熔点也较高。这种演化被认为是由Al原子扩散引起的固态相变引起的。应用反向包晶反应的概念解释了相结构演化机理。该研究为通过将金属间化合物引入另一金属熔体来控制它们提供了新的见解。

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On the evolution mechanism of AlTM intermetallics in Mg melt via reverse peritectic reactions

The modulation of intermetallic compounds has been a topic of significant interest in the field of metallic materials. In this study, a series of AlTM phase particles including Al₆Mn, Al₁₁Ce₃, Al₁₃Fe₄ and Al₃Y were introduced into Mg melt, with various holding times. It was found that all the original coarse particles crack into fine dispersions, while crystal structure evolution happens simultaneously. The phases finally evolve to Al₈Mn₅, Al₂Ce, Al₅Fe₂ and Al₂Y, respectively, which are more Al-depleted with higher melting point. The evolution is supposed due to a phase transition in the solid state caused by the diffusion of Al atoms. The concept of reverse peritectic reaction was applied to explain the phase structure evolution mechanisms. This study offers new insight for controlling intermetallics by introducing them into another metal melt.

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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.