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Improvement of corrosion resistance of twinning-induced plasticity steel by hot-dipping aluminum with subsequent thermal diffusion treatment

机译:通过热浸铝和随后的热扩散处理来改善孪晶诱导塑性钢的耐腐蚀性

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摘要

Fe-Al intermetallic layers were formed on the surface of twinning induced plasticity (TWIP) steel by hot-dipping aluminum (HDA) and subsequent thermal diffusion treatment (TDT). It was shown that the coating layer was composed of Al, FeAl3 and Fe2Al5 phases in the hot-dip state while only Fe3Al phase retained after subsequent TDT. It was found that, the corrosion resistance of TWIP steel had been significantly improved with a shift of 224 mV in the E-corr towards anodic direction and the j(corr) reduced from 26.1 mu A/cm(2) to 2.70 mu A/cm(2). Fe-Al intermetallics could lower the corrosion rate because the Al2O3 film formed during stable soak stage was slightly stable due to the higher aluminum content than matrix steel. (C) 2019 Elsevier B.V. All rights reserved.
机译:通过热浸铝(HDA)和随后的热扩散处理(TDT)在孪生感应塑性(TWIP)钢的表面上形成Fe-Al金属间化合物层。结果表明,涂​​层由热浸状态的Al,FeAl3和Fe2Al5相组成,而在随后的TDT之后仅保留了Fe3Al相。结果发现,随着E-corr向阳极方向移动224 mV,TWIP钢的耐腐蚀性得到了显着提高,并且j(corr)从26.1μA/ cm(2)降低到2.70μA/厘米(2)。 Fe-Al金属间化合物可能会降低腐蚀速率,因为在稳定的浸泡阶段形成的Al2O3膜由于铝含量高于基体钢而略微稳定。 (C)2019 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Materials Letters》 |2019年第1期|60-64|共5页
  • 作者

    Wang Wen; Wang Dan; Han Fusheng;

  • 作者单位

    Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China|Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China;

    Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China;

    Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    TWIP steel; Intermetallic alloys and compounds; Hot-dipping aluminum; Corrosion;

    机译:TWIP钢;金属间合金和化合物;热浸铝;腐蚀;

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