实现双相铸造AlCoCrNi高熵合金优异的强塑性结合

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-07-31 DOI:10.1016/j.intermet.2025.108935

Minghe Zhang , Qixuan Hao , Dongpo Xuan , Liguang Wang , Ning Xu , Yunli Feng , Shilei Li

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引用次数: 0

摘要

本文制备并研究了一种由L12与B2相比为1:3的双相Al17Co17.66Cr17.67Ni47.67高熵合金（HEA）。该合金表现出优异的力学性能，其极限抗拉强度（UTS）为~ 1208 MPa，均匀伸长率（UE）为~ 19.7%，超过了许多先前报道的铸态合金。这种材料的强度和延展性之间的显著协同作用源于L12和B2相中广泛的位错滑移机制，以及B2相中的马氏体转变。

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Realizing outstanding strength-ductility combination in dual-phase casting AlCoCrNi high-entropy alloy

In this work, a novel cast Al₁₇Co_17.66Cr_17.67Ni_47.67 high entropy alloy (HEA) consisting of duplex phases with an L1₂ to B2 phase ratio of 1:3 was fabricated and studied. The alloy exhibits outstanding mechanical properties with an ultimate tensile strength (UTS) of ∼1208 MPa and a large uniform elongation (UE) of ∼19.7 %, exceeding that of many previously reported as-cast alloys. The remarkable synergy between strength and ductility of this material stems from the extensive dislocation slip mechanisms in both L1₂ and B2 phases, coupled with the martensitic transformation within the B2 phase.

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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.