Corrosion behaviors of Fe50Mn30Co10Cr10 high-entropy alloy wires with different processing states in various aqueous environments

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-09-15 DOI:10.1016/j.corsci.2025.113318

Xiaoyang Zhang , Jinchen Yang , Pengya Lei , Ruifeng Dong , Hua Hou , Yuhong Zhao

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Abstract

The electrochemical corrosion behavior and passive film characteristics of a low-stacking-fault-energy high-entropy alloy (HEA) cold-drawn wire with the composition of Fe₅₀Mn₃₀Co₁₀Cr₁₀ were studied in acidic, alkaline, and saline solutions with three different processing states: deformation, recovery, and recrystallization. In NaCl solutions, the cold-drawn sample exhibits the best corrosion resistance, attributed to its high dislocation density and the formation of stable Mn-rich passive films. In contrast, the recrystallized sample shows the highest corrosion susceptibility. In low concentration H₂SO₄ solution, the cold-drawn sample demonstrates the best corrosion resistance, with high dislocation density enhancing passive film stability. However, as the H₂SO₄ concentration increases to 1 M, corrosion resistance deteriorates, with the recrystallized sample showing the best performance. At 2 M H₂SO₄, the recovered sample performs relatively better. X-ray photoelectron spectroscopy (XPS) analysis reveals that the Cr₂O₃ content on the alloy surface is influenced by both the microstructure and acid concentration, which together regulate the competition between oxidation and dissolution kinetics. In alkaline solutions, corrosion resistance improves with increasing NaOH concentration, with the cold-drawn sample exhibiting the best performance due to enhanced passivation stability. This study establishes a framework for tailoring HEA wire processing strategies to achieve enhanced durability in diverse corrosive environments by elucidating the critical relationships between microstructure, processing history, and corrosion resistance.

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不同加工状态下Fe50Mn30Co10Cr10高熵合金丝在不同水环境中的腐蚀行为

研究了含Fe50Mn30Co10Cr10的低叠错能高熵合金（HEA）冷拔丝在变形、恢复和再结晶三种不同加工状态下的电化学腐蚀行为和钝化膜特性。在NaCl溶液中，冷拔样品具有较高的位错密度和稳定的富锰钝化膜，具有最佳的耐蚀性。相比之下，再结晶样品的腐蚀敏感性最高。在低浓度H2SO4溶液中，冷拔样品表现出最好的耐腐蚀性，高位错密度增强了被动膜的稳定性。当H2SO4浓度增加到1 M时，耐蚀性能下降，再结晶样品的耐蚀性能最好。在2 M H2SO4下，回收的样品性能相对较好。x射线光电子能谱（XPS）分析表明，合金表面Cr2O3含量受微观结构和酸浓度的影响，两者共同调控氧化和溶解动力学的竞争。在碱性溶液中，耐腐蚀性随着NaOH浓度的增加而提高，由于钝化稳定性增强，冷拔样品表现出最佳性能。本研究通过阐明微观结构、加工历史和耐腐蚀性之间的关键关系，为定制HEA线材加工策略建立了一个框架，以提高其在不同腐蚀环境中的耐久性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.