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| 外加电位对X70管线钢在近中性pH溶液中的应力腐蚀破裂的影响 | |
| 引用本文： | 郭浩,李光福,蔡珣,周建江,黄春波,杨武.外加电位对X70管线钢在近中性pH溶液中的应力腐蚀破裂的影响[J].中国腐蚀与防护学报,2004,24(4):208-212. |
| 作者姓名： | 郭浩 李光福 蔡珣 周建江 黄春波 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,上海,200437 2. 上海材料研究所,上海,200437 3. 上海交通大学材料学院,上海,200030 |
| 基金项目： | 国家重点基金研究专项目经费资助项目 (G19990 65 0 )，上海市科技发展基金项目 ( 0 2 5 2 5 80 3 6)，上海市自然科学基金 ( 0 2ZE14 0 3 1) |
| 摘 要： | 采用慢应变速率试验(SSRT)研究了不同电位下X70管线钢在近中性pH溶液中的应力腐蚀破裂(SCC)行为．同时研究丁溶液中通入不同含量CO2对SCC的影响．结果表明．X70管线钢在近中性pH溶液中的开裂方式是穿晶型的．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；随CO2含量的增加，pH值降低，SCC敏感性增加．均表现为氢致开裂占主导． |
| 关 键 词： | 管线钢 应力腐蚀破裂 近中性pH 电位 CO2含量 |
| 文章编号： | 1005-4537(2004)04-0208-05 |
EFFECT OF APPLIED POTENTIALS ON STRESS CORROSION CRACKING OF X70 PIPELINE STEEL IN NEAR-NEUTRAL-pH SOLUTIONS |
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| GUO Hao ,LI Guangfu,CAI Xun,ZHOU Jianjiang,HUANG Chunbo,YANG Wu.EFFECT OF APPLIED POTENTIALS ON STRESS CORROSION CRACKING OF X70 PIPELINE STEEL IN NEAR-NEUTRAL-pH SOLUTIONS[J].Journal of Chinese Society For Corrosion and Protection,2004,24(4):208-212. | |
| Authors: | GUO Hao LI Guangfu CAI Xun ZHOU Jianjiang HUANG Chunbo YANG Wu |
| Affiliation: | GUO Hao 1,2,LI Guangfu2,CAI Xun1,ZHOU Jianjiang2,HUANG Chunbo2,YANG Wu2 |
| Abstract: | The stress corrosion cracking(SCC)behavior of X70 pipeline steel in near-neutral-pH solutions at different applied potentials and the effect of different levels of CO 2 on SCC were studied with slow strain rate testing(SSRT).The results showed that the cracking mode of X70 pipeline steel in near-neutral-pH solutions was transgranular,with the features of quasi-cleavage.The susceptibility to SCC increased as the applied potential moved towards the cathodic direction.The value of pH decreased with the increased addition of CO 2 in the solution,which increased the susceptibility to SCC.Hydrogen induced cracking(HIC)dominated the process. |
| Keywords: | pipeline steel stress corrosion cracking near-neutral pH potential carbon dioxide |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
