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Role of Ca treatment in hydrogen induced cracking of hot rolled API pipeline steel in acid sour media

机译:钙处理在酸性介质中氢诱导热轧API管线钢开裂的作用

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摘要

The effect of Ca treatment on hydrogen-induced cracking (HIC) resistance of hot rolled pipeline steel was evaluated. HIC testing was carried out in acidic condition according to NACE standard; results clearly prove that HIC resistance is very sensitive to Ca/S ratio. When Ca/S ratio is below the stoichiometric ratio, HIC occurred at mid-thickness of the steel regardless of the S content. This is closely related to the formation of spherical CaS inclusion with Ca treatment instead of MnS inclusion, which acts on crack initiation sites.
机译:评估了Ca处理对热轧管线钢抗氢致开裂(HIC)的影响。根据NACE标准在酸性条件下进行HIC测试;结果清楚地证明,HIC电阻对Ca / S比非常敏感。当Ca / S比低于化学计量比时,无论S含量如何,HIC都发生在钢的中厚度处。这与用Ca处理而不是MnS夹杂物形成球形CaS夹杂物密切相关,后者作用在裂纹萌生部位。

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  • 来源
    《Metals and Materials International》 |2013年第1期|45-48|共4页
  • 作者单位

    Ferrous Alloy Department Advanced Metallic Materials Division Korea Institute of Materials Science">(1);

    Sheet Products Design Team RD center Hyundai Steel Company">(2);

    Division of Material Science and Engineering Hanyang University">(3);

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