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首页> 外文期刊>ISIJ international >Effect of Surface Hydrogen Concentration on Hydrogen Embrittlement Properties of Stainless Steels and Ni Based Alloys
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Effect of Surface Hydrogen Concentration on Hydrogen Embrittlement Properties of Stainless Steels and Ni Based Alloys

机译：表面氢浓度对不锈钢和镍基合金氢脆性能的影响

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摘要

Hydrogen embrittlement properties of several stainless steels and Ni based alloys under cathodic charge (CHE) were investigated. Hydrogen concentration in the materials was varied by controlling hydrogen charging conditions. Slow strain rate test (SSRT) under cathodic charge in aqueous solution was carried out to evaluate CHE susceptibility. Mechanical degradation by hydrogen was evaluated by relative fracture elongation (relative fracture El.) against that in air. Critical surface hydrogen concentration (H_C), the maximum hydrogen at which El. was hard to be decreased, was derived from SSRT results under various hydrogen charging levels. H_C strongly depended on Ni equivalent (Ni_(eq)), which is a parameter consisting of alloy chemical compositions, reflecting stability of austenitic phase. CHE test results were compared to susceptibilities to hydrogen gas embrittlement (HGE) and internal reversible hydrogen embrittlement (IRHE), which are caused by highly pressurized gaseous hydrogen. Materials accepting higher H_C generally showed higher resistance to HGE and IRHE. Comparing H_C to H_E, concentration of hydrogen absorbing from highly pressurized gaseous hydrogen, enables the risk assessment of hydrogen embrittlement in actual service conditions.
机译：研究了几种不锈钢和镍基合金在阴极电荷（CHE）下的氢脆性能。通过控制氢的填充条件来改变材料中的氢浓度。在水溶液中的阴极电荷下进行慢应变速率测试（SSRT），以评估CHE的敏感性。通过相对于空气的相对断裂伸长率（相对断裂El。）来评估氢的机械降解。临界表面氢浓度（H_C），El处的最大氢。难以减少，是根据在各种氢气充量水平下的SSRT结果得出的。 H_C强烈依赖于Ni当量（Ni_（eq）），Ni当量是由合金化学成分组成的参数，反映了奥氏体相的稳定性。将CHE测试结果与由高压气态氢引起的氢气脆化（HGE）和内部可逆氢气脆化（IRHE）的敏感性进行了比较。接受更高H_C的材料通常对HGE和IRHE表现出更高的抵抗力。将H_C与H_E（从高压气态氢吸收的氢的浓度）进行比较，可以评估实际使用条件下氢脆的风险。

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  • 来源
    《ISIJ international》 |2016年第3期|405-412|共8页
  • 作者

    Tomohiko OMURA; Jun NAKAMURA; Hiroyuki HIRATA; Kana JOTOKU; Masaki UEYAMA; Takahiro OSUKI; Masaaki TERUNUMA;

  • 作者单位

    Steel Research Laboratory, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fuso-cho, Amagasaki, 660-0891 Japan;

    Steel Research Laboratory, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fuso-cho, Amagasaki, 660-0891 Japan;

    Steel Research Laboratory, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fuso-cho, Amagasaki, 660-0891 Japan;

    Steel Research Laboratory, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fuso-cho, Amagasaki, 660-0891 Japan;

    Amagasaki Works, Nippon Steel & Sumitomo Metal Corporation, 1, Nishino-cho, Higashi-Mukojima, Amagasaki, 660-0856 Japan;

    Amagasaki Works, Nippon Steel & Sumitomo Metal Corporation, 1, Nishino-cho, Higashi-Mukojima, Amagasaki, 660-0856 Japan;

    Amagasaki Works, Nippon Steel & Sumitomo Metal Corporation, 1, Nishino-cho, Higashi-Mukojima, Amagasaki, 660-0856 Japan;

  • 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

    hydrogen embrittlement; hydrogen gas embrittlement; stainless steel; highly pressurized hydrogen;

    机译：氢脆氢气脆化不锈钢;高压氢气;

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