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Effect of applied potential on hydrogen embrittlement of weld simulated HSLA–80 steel in sea water

机译：施加电位对海水中模拟HSLA-80焊接钢氢脆化的影响

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摘要

Hydrogen embrittlement behaviour of an HSLA–80 steel in the weld simulated, grain coarsened heat affected zone condition, in synthetic sea water under cathodic charging in the applied potential range of -600 to -1400 mV(SCE) has been studied using a slow strain rate technique. Loss of ductility, as reflected in the percentage elongation and percentage reduction in area values, was substantial at and beyond -800 mV(SCE). The material in the weld simulated condition showed more susceptibility than the as received material, which is considered to be a result of increased strength and a bainitic–martensitic microstructure. Fracture showed both microvoid coalescence and quasi-cleavage features and was indicative of hydrogen induced void nucleation. Both hardening and softening effects on hydrogen charging were experienced.
机译：使用慢应变研究了HSLA–80钢在模拟充电，晶粒粗化热影响区条件下，在合成海水中在阴极充电下在-600至-1400 mV（SCE）的施加电势下的氢脆行为。率技术。在-800 mV（SCE）或更高的范围内，延展性的损失表现为伸长率的百分比降低和面积值的百分比降低。在焊接模拟条件下的材料比收到的材料表现出更高的磁化率，这被认为是强度提高和贝氏体-马氏体微观结构的结果。断裂显示微孔聚结和准裂解特征，并指示氢诱导的空核。氢气充入过程中均经历了硬化和软化作用。

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  • 来源
    《British Corrosion Journal》 |2000年第4期|273-278|共6页
  • 作者

    Banerjee K.; Chatterjee U.K.;

  • 作者单位

    The Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, India;

    The Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, India;

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