H_(2)中O_(2)和CO掺杂对X52管线钢氢脆敏感性影响研究  

Effect of Small Amount of O_(2) and CO on Hydrogen Embrittlement Susceptibility of X52 Pipeline Steel

作　　者：万红江 明洪亮 王俭秋[1] 韩恩厚[1,3] WAN Hongjiang;MING Hongliang;WANG Jianqiu;HAN En-Hou(Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Institute of Corrosion Science and Technology,Guangzhou 510530,China)

机构地区：[1]中国科学院金属研究所,沈阳110016 [2]中国科学技术大学材料科学与工程学院,沈阳110016 [3]广东腐蚀科学与技术创新研究院,广州510530

出　　处：《中国腐蚀与防护学报》2025年第2期371-380,共10页Journal of Chinese Society For Corrosion and Protection

基　　金：国家重点研发计划(2021YFB4001601);中国科学院青年创新促进会(2022187)。

摘　　要：通过慢应变速率拉伸实验研究了纯氢气体中O_(2)和CO含量对X52管线钢氢脆敏感性的影响,并采用扫描电子显微镜对试样的断口进行了观察。结果表明,X52管线钢的氢脆敏感性随H_(2)中O_(2)和CO含量的增大而降低,当H_(2)中O_(2)体积分数为0.01%或CO体积分数为0.02%时,X52管线钢的氢脆敏感性指数分别为0.83%和8.11%,仅分别为纯氢环境下的3.96%和38.66%。O_(2)和CO与H_(2)在金属表面的竞争吸附是导致管线钢氢脆敏感性降低的根本原因。The effect of small injected amount of O_(2) and CO on the hydrogen embrittlement susceptibility of X52 pipeline steel in pure gaseous hydrogen was investigated by slow strain rate tensile tests,while the fracture of the tested steel was characterized by scanning electron microscope.Results reveal that the hydrogen embrittlement susceptibility of X52 pipeline steel decreases with the increase of the injected amount of O_(2) and CO in the gaseous hydrogen.For the gaseous hydrogen with either 0.01%(volume fraction)O_(2) or 0.02%(volume fraction)CO,the acquired hydrogen embrittlement index of X52 pipeline steel is 0.83%and 8.11%,which correspond to 3.96%and 38.66%those in pure gaseous hydrogen,respectively.It follows that the competitive adsorption of O_(2) and CO with the presence of H_(2) leads to the reduction of hydrogen embrittlement sensitivity of the pipeline steel.

关 键 词：X52管线钢 氢脆 O_(2) CO 竞争吸附 

分 类 号：TG172[金属学及工艺—金属表面处理]