AF1410鋼電子束焊接件在模擬海洋環境中的腐蝕行為

郝雪龍; 張東暉; 劉建華; 李松梅; 于美

doi:10.13374/j.issn1001-053x.2013.06.008

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AF1410鋼電子束焊接件在模擬海洋環境中的腐蝕行為

doi: 10.13374/j.issn1001-053x.2013.06.008

1. 北京有色金屬研究總院國家有色金屬及電子材料分析測試中心,北京 100088;
2. 北京航空航天大學材料科學與工程學院空天材料與服役教育部重點實驗室,北京 100191

基金項目:

國家自然科學基金資助項目(51001007)

詳細信息

通訊作者:
郝雪龍,E-mail:xlhao@mse.buaa.edu.cn

中圖分類號: TG456.3
計量
- 文章訪問數: 251
- HTML全文瀏覽量: 83
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 2012-03-05

Corrosion of AF1410 steel electron beam welding joints in simulated marine environment

1. National Center of Analysis and Testing for Non-ferrous Metals & Electronic Materials, General Research Institute for Nonferrous Metals, Beijing 100088, China;
2. Key Laboratory of Aerospace Materials and Performance (Ministry of Education., School of Materials Science and Engineering, Beihang University, Beijing 100191, China

摘要

摘要: 采用中性鹽霧試驗模擬海洋環境,研究了AF1410鋼電子束焊接接頭不同位置、不同暴露時間的腐蝕電化學阻抗譜特征,并結合電子束焊接接頭組織結構分析評價了焊縫熔合區及母材的耐腐蝕性能及電化學行為.開路電位及阻抗譜研究表明,焊縫熔合區的粗大回火馬氏體和析出碳化物易構成腐蝕電池,比基材腐蝕反應阻力小,易引起電化學腐蝕.建立了不同腐蝕階段的阻抗譜等效電路,并對其進行了擬合.
- 鋼腐蝕 /
- 大氣腐蝕 /
- 電子束焊 /
- 電化學阻抗譜 /
- 等效電路
Abstract: The corrosion electrochemical impedance spectroscopy characteristics of AF1410 steel electron beam welding joints at different positions and for different exposure time were investigated in a simulated marine environment by neutral salt spray testing. The corrosion resistance and the electrochemical behaviors of the weld fusion zone and the base metal were evaluated according to the microstructure analysis of the welded joints. The investigation of open circuit potential and impedance spectroscopy indicates that thick tempered martensite and carbide precipitates at the weld fusion zone are easy to form a corrosion cell, and the corrosion reaction resistance is less than that of the base metal, which easily leads to electrochemical corrosion. Equivalent circuits of impedance spectroscopy were established and fitted for the different corrosion stages.
- steel corrosion /
- atmospheric corrosion /
- electron beam welding /
- electrochemical impedance spectroscopy /
- equivalent circuits