AUSTENITIC STAINLESS STEEL, AND HYDROGENATION METHOD THEREOF
    1.
    发明申请
    AUSTENITIC STAINLESS STEEL, AND HYDROGENATION METHOD THEREOF 审中-公开
    奥氏体不锈钢及其加氢方法

    公开(公告)号:US20110139321A1

    公开(公告)日:2011-06-16

    申请号:US13057578

    申请日:2009-07-17

    IPC分类号: C21D1/613 C22C38/00

    摘要: Disclosed are an austenitic stainless steel, and a hydrogenation method thereof, in which occurrence of fatigue cracks and growth of fatigue cracks are suppressed by charging the austenitic stainless steel with hydrogen.In particular, focusing on the amount of diffusible hydrogen and non-diffusible hydrogen, which cause hydrogen embrittlement in austenitic stainless steel, the fatigue strength characteristics of austenitic stainless steel are improved by bringing the amount of diffusible hydrogen and non-diffusible hydrogen contained in the austenitic stainless steel to 0.0030 wt % (30 wt ppm) or higher. The austenitic stainless steel is subjected to a thermal treatment at a heating temperature of 200 to 500° C. for up to 460 hours in a hydrogen environment. The hydrogen (H) contained in the austenitic stainless steel is brought thereby to 0.0030 wt % (30 wt ppm) or higher.

    摘要翻译: 公开了一种通过用氢气填充奥氏体不锈钢来抑制疲劳裂纹的发生和疲劳裂纹的生长的奥氏体不锈钢及其氢化方法。 特别是关注在奥氏体不锈钢中引起氢脆的扩散氢和非扩散性氢的量,奥氏体不锈钢的疲劳强度特性通过使含有氢的可扩散氢和非扩散性氢的量得到改善 奥氏体不锈钢为0.0030重量%(30重量ppm)以上。 奥氏体系不锈钢在氢气环境下,在200〜500℃的加热温度下进行长达460小时的热处理。 奥氏体不锈钢中所含的氢(H)由此达到0.0030重量%(30重量ppm)以上。

    AUSTENITIC STAINLESS STEEL, AND METHOD FOR REMOVING HYDROGEN THEREFROM
    2.
    发明申请
    AUSTENITIC STAINLESS STEEL, AND METHOD FOR REMOVING HYDROGEN THEREFROM 审中-公开
    奥氏体不锈钢及其除氢方法

    公开(公告)号:US20110005645A1

    公开(公告)日:2011-01-13

    申请号:US12919353

    申请日:2009-02-09

    IPC分类号: C21D6/00 C22C38/00

    摘要: The present invention focuses on diffusible hydrogen and non-diffusible hydrogen that cause hydrogen embrittlement in an austenitic stainless steel, and provides the austenitic stainless steel having diffusible hydrogen and non-diffusible hydrogen removed therefrom, and a method for removing hydrogen therefrom. In order to remove diffusible hydrogen and non-diffusible hydrogen, which cause hydrogen embrittlement in the austenitic stainless steel, an aging treatment is performed to the austenitic stainless steel at a temperature ranging from 200 to 1100° C. while being kept in an air atmosphere. As a result, the hydrogen (H) content in the austenitic steel is removed to 0.001 wt % (1 wt ppm) or less.

    摘要翻译: 本发明着重于在奥氏体不锈钢中引起氢脆的扩散氢和不扩散氢,并提供从其中除去可扩散氢和不扩散氢的奥氏体不锈钢,以及从其中除去氢的方法。 为了去除在奥氏体不锈钢中引起氢脆的可扩散的氢和不可扩散的氢,在200-1100℃的温度下对奥氏体不锈钢进行时效处理,同时保持在空气气氛中 。 结果,将奥氏体钢中的氢(H)含量除去至0.001重量%(1重量ppm)以下。