模拟舰载平台环境下GH4169合金的腐蚀机制

贾润川; 刘泽萌; 李明; 陈宇; 崔腾飞; 吴建国

doi:10.7643/issn.1672-9242.2025.08.005

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (8) : 38-44. DOI: 10.7643/issn.1672-9242.2025.08.005

专题——复杂环境轻武器应用与协同评估技术

模拟舰载平台环境下GH4169合金的腐蚀机制

贾润川^1,2, 刘泽萌^1,2, 李明^1,2, 陈宇^1,2, 崔腾飞³, 吴建国³

作者信息 +

Corrosion Mechanism of GH4169 Alloy in Simulated Shipboard Platform Environment

JIA Runchuan^1,2, LIU Zemeng^1,2, LI Ming^1,2, CHEN Yu^1,2, CUI Tengfei³, WU Jianguo³

Author information +

文章历史 +

摘要

目的获取GH4169合金在模拟舰载平台环境下的腐蚀损伤规律及其腐蚀影响因素。方法对2种不同热处理制度的GH4169合金样品开展模拟舰载平台的盐雾/SO₂复合试验,通过扫描电子显微镜观察并表征其微观腐蚀形貌。结果在盐雾/SO₂复合试验环境下,2种GH4169合金比其他常见金属出现腐蚀的周期更晚,但最终都出现腐蚀,产生绿色腐蚀产物。与δ相含量低的样品相比,δ相含量更高的样品出现腐蚀的时间更早,腐蚀程度呈现明显的随试验周期而加深的趋势,腐蚀点数量更多,单个点蚀的尺寸及深度更大,总体来说腐蚀程度更深。结论 GH4169合金的耐舰载平台环境腐蚀能力较强,热处理制度导致的δ相含量及分布不同是合金在盐雾/SO₂复合试验中具有不同腐蚀表现的主要原因,δ相含量多的合金更容易发生腐蚀。

Abstract

The work aims to investigate the corrosion damage mechanisms and influencing factors of GH4169 alloy under simulated shipboard environments. Salt spray/SO₂ composite tests were conducted on samples subject to two distinct heat treatment regimes. Micro-corrosion morphologies were characterized via scanning electron microscopy (SEM). Results revealed that under salt spray/SO₂ conditions, two GH4169 samples exhibited delayed corrosion initiation compared with common metals, but ultimately succumbed to corrosion, which produced green corrosion products. Samples with higher δ-phase content demonstrated earlier corrosion onset and progressively severe corrosion, characterized by increased pit density, larger pit dimensions, and greater depths, indicating exacerbated overall corrosion. These findings underscore the alloy's robust corrosion resistance in shipboard environments. Variations in corrosion behavior during testing are primarily attributed to heat treatment-induced differences in δ-phase content and distribution, with higher δ-phase fractions correlating with increased corrosion susceptibility.

导出引用

贾润川, 刘泽萌, 李明, 陈宇, 崔腾飞, 吴建国. 模拟舰载平台环境下GH4169合金的腐蚀机制[J]. 装备环境工程. 2025, 22(8): 38-44 https://doi.org/10.7643/issn.1672-9242.2025.08.005

JIA Runchuan, LIU Zemeng, LI Ming, CHEN Yu, CUI Tengfei, WU Jianguo. Corrosion Mechanism of GH4169 Alloy in Simulated Shipboard Platform Environment[J]. Equipment Environmental Engineering. 2025, 22(8): 38-44 https://doi.org/10.7643/issn.1672-9242.2025.08.005

中图分类号： TG172

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