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| X70管线钢在不同温度近中性pH溶液中的应力腐蚀破裂行为 | |
| 引用本文： | 郭浩,李光福,蔡珣,杨武.X70管线钢在不同温度近中性pH溶液中的应力腐蚀破裂行为[J].金属学报,2004,40(9):967-971. |
| 作者姓名： | 郭浩 李光福 蔡珣 杨武 |
| 作者单位： | 1. 上海交通大学材料学院,上海,200030;上海材料研究所腐蚀研究室,上海,200437 2. 上海材料研究所腐蚀研究室,上海,200437 3. 上海交通大学材料学院,上海,200030 |
| 基金项目： | 国家重点基础研究发展规划G19990650，上海市科技发展基金025258036，上海市自然科学基金02ZE14031资助项目 |
| 摘 要： | 采用慢应变速率实验(SSRT)研究了不同温度和电位下X70管线钢在近中性pH溶液中的应力腐蚀破裂(SCC)行为．结果表明，不同温度下，X70管线钢在近中性pH溶液中的开裂方式都是穿晶型的，具有准解理特征，并且随着外加阴极电位的降低，SCC敏感性增加，氢致开裂占主导．随温度的下降，溶液pH值略有降低，SCC敏感性增加。 |
| 关 键 词： | 管线钢 应力腐蚀破裂 近中性pH溶液 |
| 文章编号： | 0412-1961(2004)09-0967-05 |
| 收稿时间： | 2003-09-26 |
| 修稿时间： | 2004-01-04 |
Stress Corrosion Cracking Behavior of X70 PipelineSteel in Near-Neutral pH Solutions at Different Temperatures |
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| GUO Hao,LI Guangfu,CAI Xun,YANG Wu.Stress Corrosion Cracking Behavior of X70 PipelineSteel in Near-Neutral pH Solutions at Different Temperatures[J].Acta Metallurgica Sinica,2004,40(9):967-971. | |
| Authors: | GUO Hao LI Guangfu CAI Xun YANG Wu |
| Affiliation: | College of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030;Shanghai Research Institute of Materials, Shanghai 200437 |
| Abstract: | The stress corrosion cracking (SCC) behaviors of X70 pipeline steel in near-neutral pH solutions at different temperatures and applied potentials are studied with slow strain rate testing (SSRT). The results show that the cracking mode of X70 pipeline steel in near-neutral pH solutions is transgranular at different temperatures with the feature of quasi-cleavage. The susceptibility to SCC increases as the applied potential moved towards the cathodic direction. Hydrogen induced cracking (HIC) dominates the process. The value of pH decreases slightly with decreasing temperature of the solution, and the susceptibility to SCC increases. |
| Keywords: | pipeline steel stress corrosion cracking near-neutral pH solution |
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