AlxCoCrNi中熵合金在海洋环境耐蚀性研究 进展
Research Progress on the Corrosion Resistance of AlxCoCrNi Medium-Entropy Alloys in Marine Environments
DOI: 10.12677/ms.2026.167159, PDF,    科研立项经费支持
作者: 胡春艳, 罗 玉, 黎枚英, 陈 林*：百色学院材料科学与工程学院，广西 百色；吴孟丹：桂林理工大学材料科学与工程学院，广西 桂林
关键词: CoCrNi；中熵合金；海洋腐蚀；CoCrNi； Medium-Entropy Alloy； Marine Corrosion
摘要: 文章揭示了AlxCoCrNi中熵合金在海洋环境中的腐蚀行为机理及耐蚀设计策略。通过系统总结该合金的成分设计、组织演化规律、钝化膜特征及多尺度腐蚀机理，发现Al对耐蚀性的影响并非单调变化，而是取决于Cr主导的钝化能力、FCC/BCC/B2相比例、局部贫Cr区形成及富铝镍活性相分布的协同关系；过量Al会诱导B2相和贫Cr区，从而增加局部腐蚀敏感性。海洋腐蚀本质上是“成分–组织–膜稳定性–局部腐蚀萌生与扩展”的链式过程。因此，优化Al-Cr协同、调控组织均匀性及采用表面工程是提升耐蚀性的关键途径。
Abstract: In this paper, the corrosion behavior mechanism and corrosion resistance design strategy of AlxCoCrNi medium entropy alloys in a marine environment are revealed. The compositional design, microstructure evolution, passivation film characteristics, and multi-scale corrosion mechanism of the alloy are systematically summarized. It can be seen that the effect of Al on corrosion resistance is non-monotonous, depending on the synergistic relationship between Cr-dominated passivation ability, FCC/BCC/B2 ratio, local Cr-poor region formation, and aluminum-nickel-rich active phase distribution. Excessive Al induces the B2 phase and Cr-poor region, thereby increasing local corrosion susceptibility. Marine corrosion is essentially a chain process of “composition-structure-membrane stability-local corrosion initiation and expansion”. Consequently, optimizing Al-Cr synergy, regulating microstructure uniformity, and adopting surface engineering are the key ways to improve corrosion resistance.
文章引用：胡春艳, 吴孟丹, 罗玉, 黎枚英, 陈林. AlxCoCrNi中熵合金在海洋环境耐蚀性研究 进展[J]. 材料科学, 2026, 16(7): 97-104. https://doi.org/10.12677/ms.2026.167159

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