AlCrFe2Ni2Bx (x=0, 0.04, 0.1, 0.2) 高熵合金的微观结构和腐蚀特性

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2024-10-31 DOI:10.1016/j.electacta.2024.145303

Yinan Wang , Rui Fan , Zhenjie Zang , Xin Zhang , Bo Cui

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引用次数: 0

摘要

本研究探讨了不同的 B 元素浓度（x=0、0.04、0.1 和 0.2 at.%）如何影响 AlCrFe2Ni2Bx 高熵合金的微观结构、耐腐蚀性和被动膜的特性。研究结果表明，铸态铝铬铁镍2Bx合金从明显的晶粒结构过渡到树枝状结构。B 含量的增加显著增强了树枝状结构间区域，从而在这一转变过程中实现了明显的晶粒细化。在重量百分比为 3.5 的氯化钠溶液中，硼含量从 0%增加到 0.1%可提高耐腐蚀性，而 0.2%的硼含量则会略微降低耐腐蚀性。这些影响源于微观结构的变化和被动膜成分的变化。

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Microstructure and corrosion properties of AlCrFe2Ni2Bx (x = 0, 0.04, 0.1, 0.2) high entropy alloy

This study examined how varying B element concentrations (x = 0, 0.04, 0.1, and 0.2 at.%) affect the microstructure, corrosion resistance, and characteristics of passive films in AlCrFe₂Ni₂B_x high-entropy alloys. The findings indicated that as-cast AlCrFe₂Ni₂B_x alloys transitioned from distinct grain structures to dendritic structures. Increased B content significantly enhanced inter-dendritic regions, resulting in notable grain refinement during this transition. In a 3.5 wt.% NaCl solution, B content increase from 0 at.% to 0.1 at.% improved corrosion resistance, while a 0.2 at.% concentration slightly reduced resistance. These effects stemmed from microstructural changes and variations in passive film composition.

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.