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应变速率对X80管线钢在库尔勒土壤环境中应力腐蚀开裂的影响

谢飞, 王丹, 吴明, 孙东旭

谢飞, 王丹, 吴明, 孙东旭. 应变速率对X80管线钢在库尔勒土壤环境中应力腐蚀开裂的影响[J]. 焊接学报, 2015, 36(1): 55-58.
引用本文: 谢飞, 王丹, 吴明, 孙东旭. 应变速率对X80管线钢在库尔勒土壤环境中应力腐蚀开裂的影响[J]. 焊接学报, 2015, 36(1): 55-58.
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XIE Fei, WANG Dan, WU Ming, SUN Dongxu. Effects of strain rate on stress corrosion cracking of X80 pipeline steel in ku'erle soil environment[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(1): 55-58.
Citation: XIE Fei, WANG Dan, WU Ming, SUN Dongxu. Effects of strain rate on stress corrosion cracking of X80 pipeline steel in ku'erle soil environment[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(1): 55-58.
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应变速率对X80管线钢在库尔勒土壤环境中应力腐蚀开裂的影响

  • 辽宁石油化工大学石油天然气工程学院, 抚顺 113001

基金项目: 国家自然科学基金资助项目(50771053);辽宁省教育厅科学研究基金资助项目(L2014156);辽宁石油化工大学科学基金资助项目(2013XJJ-019)

Effects of strain rate on stress corrosion cracking of X80 pipeline steel in ku'erle soil environment

  • College of Petroleum Engineering, Liaoning Shihua University, Fushun 113001, China

摘要

    摘要
  • 摘要: 利用慢应变速率拉伸试验(SSRT)、动电位扫描及扫描电镜(SEM)技术研究了X80管线钢在库尔勒模拟溶液中应力腐蚀开裂(SCC)行为.结果表明,随着应变速率的增加,X80管线钢在模拟溶液中的腐蚀速率先增大后减小.当应变速率为5×10-7/s时,试样腐蚀较为缓慢,此过程电化学腐蚀起决定性作用;当应变速率为5×10-6/s时,试样的腐蚀情况最为严重,此时力学作用占主导地位.
    Abstract: Slow strain rate testing (SSRT), potention dynamic polarization curves and scanning electron microscope (SEM) were employed to study the stress corrosion cracking (SCC) behavior of X80 pipeline steel in Ku'erle soil simulated solution. The results showed that the corrosion rate of X80 steel first increased and then decreased with the increase of strain rate. When the strain rate was 5×10-7/s, the corrosion phenomenon of X80 steel was not obvious. At this time. electrochemical corrosion played a decisive role. When the strain rate was 5×10-6/s, the corrosion behavior of X80 steel was the most serious. This is due to the combined effects of electrochemical and mechanical on the electrode surface, solution. which the mechanical action was dominating role.
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    • 参考文献(10)
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  • 收稿日期:  2013-07-04

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