Hydrogen embrittlement of 20# seamless steel in medium and low pressure gaseous hydrogen
作者
单位
1 School of Materials Science and Engineering、University of Science and Technology of China、Shenyang 110016、China 2 CAS Key Laboratory of Nuclear Materials and Safety Assessment、Institute of Metal Research、Chinese Academy of Sciences、Shenyang 110016、China 3 Institute of Corrosion Science and Technology、Guangzhou 510530、China
关键词
收录来源
International Corrosion Congress · 第22届国际腐蚀大会
摘要
Tubular tensile specimens containing gaseous pure hydrogen inside were used to study the hydrogen embrittlement (HE) of 20# seamless steel by using slow strain rate tensile test. Obvious HE phenomenon was found when containing hydrogen compared to the one containing nitrogen and the percentage elongation and percentage reduction of area after fracture were used to evaluate the HE sensitivity. In addition, as hydrogen pressure increases, the HE sensitivity becomes l arger. It is concluded that tubular tensile specimen is suitable for studying the HE sensitivity for materials exposed to gaseous hydrogen.