Hydrogen environment embrittlement of austenitic stainless steels at low temperatures
Hydrogen environment embrittlement of austenitic stainless steels at low temperatures
复制标题
DOI：
10.1016/j.ijhydene.2008.02.021
复制
发表时间：
2008-04-01
影响因子：
7.2
通讯作者：
Naumann, Joerg
中科院分区：
文献类型：
--
作者：
Michler, Thorsten;Naumann, Joerg
氢环境脆化（HEE）是材料科学中众所周知的现象。对于汽车行业来说，由于即将推出的氢技术，这个主题特别重要。对各种商用奥氏体不锈钢的结果表明，镍含量是满足 HEE 耐受性的主要参数之一。在慢应变速率拉伸测试中，当镍含量高于 12.5wt% 时，在 -50 摄氏度下没有发现断面收缩率损失。还发现，在本文研究的范围内，微量合金元素和杂质（例如 Mo、Mn、Ti 和 S）的影响可以忽略不计。另一个重要参数是局部冶金学。结果表明，HEE 耐受性很大程度上取决于半成品的类型，尤其是在 10 至 12.5 wt% 的镍含量范围之间。尽管标称化学成分相同，但与具有偏析的轧制板材相比，具有非常均匀结构的拉拔棒材料显示出更好的耐受性。 (C) 2008 年国际氢能协会。由爱思唯尔有限公司出版。保留所有权利。
Hydrogen environment embrittlement (HEE) is a well-known phenomenon in materials science. For the automotive industry this topic is of special importance due to the upcoming hydrogen technology. Results on a wide variety of commercially austenitic stainless steels are presented which show that the Nickel content is one of the main parameters to meet HEE resistance. In slow strain rate tensile testing no loss in reduction of area at -50 degrees C was found for Ni contents above 12.5wt%. It was also found that the influence of minor alloying elements and impurities like Mo, Mn, Ti and S is negligible within the range investigated here. Another important parameter is local metallurgy. It is shown that the HEE resistance strongly depends on the type of the semi-finished product especially between a Nickel range of 10 and 12.5 wt% Drawn bar materials with a very homogeneous structure show a better resistance compared to rolled plate materials with segregations despite identical nominal chemical compositions. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.