Hydrogen induced cracking behaviors of X70 pipeline steel and its welds under electrochemical charging
文献类型：期刊论文
| 作者 | Zhang, YR; Dong, CF; Li, XG; Rui, XL; Zhou, HR |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2006-05-11 |
| 卷号 | 42期号:5页码:521-527 |
| 关键词 | X70 pipeline steel hydrogen induced cracking hydrogen permeation weld |
| ISSN号 | 0412-1961 |
| 通讯作者 | Zhang, YR(eddie_zh00@sina.com) |
| 英文摘要 | The hydrogen induced cracking (HIC) of X70 pipeline steel was studied in H2SO4 solutions with different concentrations by means of electrochemical charging. Larger current densities, longer charging time and lower pH values of solution would promote the hydrogen atoms to enter into X70 steel. Non-metallic inclusions such as nitrides and oxides play different roles in HIC of X70 steel. Microscopic observation showed that there is no dependent relation between cracks induced by hydrogen and the inclusions of nitrides. Otherwise, the oxides of magnesium, aluminum and calcium etc are more harmful as the sources of hydrogen induced cracks. According to the results of hydrogen permeation test, the effective diffusivity (D-eff) of hydrogen at room temperature is 3.34 x 10(-9) cm(2)/s. Tensile specimens of X70 steel and welds showed severe plasticity loss after hydrogen charging, while the welds have lower plasticity than that of X70 base metal. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000237981200015 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/85430]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, YR |
| 作者单位 | 1.Univ Sci & Technol Beijing, Coll Mat Sci & Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, YR,Dong, CF,Li, XG,et al. Hydrogen induced cracking behaviors of X70 pipeline steel and its welds under electrochemical charging[J]. ACTA METALLURGICA SINICA,2006,42(5):521-527. |
| APA | Zhang, YR,Dong, CF,Li, XG,Rui, XL,&Zhou, HR.(2006).Hydrogen induced cracking behaviors of X70 pipeline steel and its welds under electrochemical charging.ACTA METALLURGICA SINICA,42(5),521-527. |
| MLA | Zhang, YR,et al."Hydrogen induced cracking behaviors of X70 pipeline steel and its welds under electrochemical charging".ACTA METALLURGICA SINICA 42.5(2006):521-527. |
入库方式： OAI收割
来源：金属研究所
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