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公开(公告)号：US20090263269A1
公开(公告)日：2009-10-22
申请号：US12301707
申请日：2007-10-05
CPC分类号： C21D3/06 , C21D6/004 , C21D2211/001 , C21D2211/008 , C22C38/44
摘要： By focusing on the non-diffusible hydrogen that causes hydrogen embrittlement of austenitic stainless steel, the present invention provides an austenitic stainless steel in which the non-diffusible hydrogen is removed by maintaining the austenitic stainless steel in a vacuum of 0.2 Pa or less and heating at a heating temperature of 200° C. to 500° C. for 460 hours or less to remove the hydrogen (H) contained therein to a level of 0.00007 mass % (0.7 mass ppm) or less.
摘要翻译： 通过关注导致奥氏体不锈钢的氢脆化的非扩散性氢，本发明提供一种奥氏体不锈钢，其中通过将奥氏体不锈钢维持在0.2Pa以下的真空中并除去加热而除去不扩散氢 在加热温度200℃〜500℃，460小时以下，除去其中所含的氢（H）至0.00007质量％（0.7质量ppm）以下的水平。
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公开(公告)号：US20110139321A1
公开(公告)日：2011-06-16
申请号：US13057578
申请日：2009-07-17
申请人： Yukitaka Murakami , Yoji Mine , Toshihiko Kanezaki
发明人： Yukitaka Murakami , Yoji Mine , Toshihiko Kanezaki
CPC分类号： C22C38/44 , C21D6/004 , C21D2211/001 , C22C38/001 , C22C38/02 , C22C38/06 , C22C38/46 , C22C38/50 , C22C38/54 , C22C38/58
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。
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公开(公告)号：US20110005645A1
公开(公告)日：2011-01-13
申请号：US12919353
申请日：2009-02-09
CPC分类号： C22C38/40 , C21D3/06 , C21D6/002 , C21D6/004 , C21D9/00 , C21D9/28 , C21D9/30 , C21D2211/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/44
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。
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公开(公告)号：US20110005329A1
公开(公告)日：2011-01-13
申请号：US12677175
申请日：2009-01-09
IPC分类号： G01N19/08
CPC分类号： G01N3/34 , G01N2203/0066 , G01N2203/0242 , G01N2203/027
摘要： There is provided a fatigue test method with which the crack growth can be checked for a plurality of cycle rates in a single test. At a first cycle rate f1 of 0.01 Hz, hydrogen has a greater effect on crack growth than at a second cycle rate f2 of 1 Hz. As a result, an area of large hydrogen effect (an area developed at the cycle rate f1) and an area of small hydrogen effect (an area developed at the cycle rate f2) appear alternately on the fatigue fracture surface, and since these two areas have different fracture surface morphologies, it is possible to see the boundary lines. Consequently, the lengths of the cracks developed under each set of conditions can be specified, and a fatigue crack growth curve can be acquired for each set of conditions.
摘要翻译： 提供了一种疲劳试验方法，通过该方法，可以在单次试验中检查多个循环速率的裂纹扩展。 在0.01Hz的第一循环速率f1下，与在1Hz的第二循环速率f2相比，氢对裂纹生长的影响更大。 结果，在氢疲劳效应大的区域（以循环速度f1发展的区域）和小氢效应区域（以循环速度f2发展的区域）交替地出现在疲劳断裂面上，由于这两个区域 具有不同的断裂面形态，可以看到边界线。 因此，可以规定在各种条件下产生的裂纹的长度，并且可以针对每一种条件获得疲劳裂纹扩展曲线。
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公开(公告)号：US08671768B2
公开(公告)日：2014-03-18
申请号：US13438239
申请日：2012-04-03
申请人： Toshihiko Kanezaki , Kazuo Miyagawa
发明人： Toshihiko Kanezaki , Kazuo Miyagawa
CPC分类号： F17C13/02 , F17C2201/0109 , F17C2201/056 , F17C2203/0619 , F17C2203/0646 , F17C2203/0663 , F17C2203/069 , F17C2221/012 , F17C2221/033 , F17C2223/0123 , F17C2223/036 , F17C2250/043 , F17C2250/0469 , F17C2250/0473 , F17C2250/0491 , F17C2250/0495 , F17C2260/042 , F17C2270/0168 , Y02E60/321
摘要： A remaining lifetime of a pressure vessel mounted on a fuel cell vehicle or the like and comprises a liner at its inner side and a reinforcing layer at its outer side can be predicted with high precision and in short time. An artificial imperfect structure is formed at an outer surface of the liner in a size capable of being maintained by a weakest part of a hydrogen gas tank throughout the total period of use of the hydrogen gas tank. A detector is, for example, comprised of a crack gauge intervening between the liner and the reinforcing layer, and is fixed to the outer surface of the liner close to the artificial imperfect structure. A crack length increases accompanying the increase of a pressure cycle of an internal pressure caused by usage of the hydrogen gas tank. The detector increases a resistance value accompanying a crack growth.
摘要翻译： 安装在燃料电池车辆等上的压力容器的剩余寿命可以以高精度和短时间预测，其内侧包括衬垫和外侧的增强层。 在衬套的外表面上形成人造不完美的结构，其尺寸能够在氢气罐的整个使用期间由氢气罐的最弱部分维持。 例如，检测器包括介于衬套和加强层之间的裂纹计，并且固定到靠近人造不完美结构的衬垫的外表面。 伴随着由氢气罐的使用引起的内部压力的压力循环的增加，裂纹长度增加。 检测器增加伴随裂纹扩展的电阻值。
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