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| The effect of crack tip environment on crack growth behaviour of a low alloy steel at cathodic potentials in artificial seawater | |
| Li, Yong1; Liu, Zhiyong1,2; Fan, Endian1; Cui, Zhongyu3; Zhao, Jinbin1,4 | |
| 2020-10-01 | |
| 发表期刊 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| 卷号 | 54页码:119-131 |
| 摘要 | The environment at crack tip and its effect on the crack growth behaviour of low alloy steel-E690 steel were studied at cathodic potentials in artificial seawater. The results showed that the micro environment at crack tip and crack growth behaviour were related to the electrochemical reactions at crack tip, which were affected by the stress state and applied potentials. The crack tip environment was acidified under cyclic loading, resulting from the crack tip anodic dissolution reaction and corresponding hydrolysis reaction. Because of the hydrogen evolution and the inhibited anodic dissolution inside the crack, the crack tip pH increases as the cathodic potential decreases. The effect of cathodic potentials on the electrochemical reactions caused the variation of the hydrogen content, which influenced the crack growth rate because the crack growth behaviour was controlled by hydrogen embrittlement mechanism. This resulted in a fact that with the negative decrease of potential, the crack growth rate first decreased and then increased, with the minimum rate at -0.75 V. And the crack growth path exhibited transgranular fracture. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 关键词 | Low alloy steel Stress state Cathodic potential Crack tip environment Crack growth behaviour |
| DOI | 10.1016/j.jmst.2020.04.034 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Open Fund of Shandong Key Laboratory of Corrosion Science[KLCS201909]; National Natural Science Foundation of China[51771028]; National Natural Science Foundation of China[51871024]; National Natural Science Foundation of China[51601182] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:000545310500013 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/167922 |
| 专题 | 海洋环境腐蚀与生物污损重点实验室 |
| 通讯作者 | Liu, Zhiyong |
| 作者单位 | 1.Univ Sci & Technol Beijing, Corros & Protect Ctr, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Shandong Key Lab Corros Sci, Qingdao 266071, Peoples R China 3.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China 4.Nanjing Iron & Steel United Co Ltd, Jiangsu Key Lab Premium Steel Mat, Nanjing 210035, Peoples R China |
| 通讯作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Li, Yong,Liu, Zhiyong,Fan, Endian,et al. The effect of crack tip environment on crack growth behaviour of a low alloy steel at cathodic potentials in artificial seawater[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,54:119-131. |
| APA | Li, Yong,Liu, Zhiyong,Fan, Endian,Cui, Zhongyu,&Zhao, Jinbin.(2020).The effect of crack tip environment on crack growth behaviour of a low alloy steel at cathodic potentials in artificial seawater.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,54,119-131. |
| MLA | Li, Yong,et al."The effect of crack tip environment on crack growth behaviour of a low alloy steel at cathodic potentials in artificial seawater".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 54(2020):119-131. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| The effect of crack （8247KB） | 期刊论文 | 作者接受稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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