王炳英,司姗姗,苗燕

• 1:中国石油大学(华东)机电工程学院

摘要(Abstract)：

通过超声表面滚压(Ultrasonic Surface Rolling Processing,USRP)技术对X80管线钢及焊缝进行加工处理,利用透射电镜对超声表面加工后母材和焊缝表面进行观察,用交流阻抗技术和动电位极化技术对X80钢及焊缝在高p H值溶液中表面的电化学腐蚀行为进行研究。结果表明,USRP处理可以使X80管线钢及焊缝表层晶粒细化至纳米级别,降低电化学腐蚀发生的可能性;试样在腐蚀介质中发生活化-钝化转变,USRP处理能够增大极化电阻,使得X80管线钢及焊缝的电化学腐蚀倾向降低。

关键词(KeyWords)： 超声表面加工;X80管线钢母材及焊缝;动电位极化曲线;交流阻抗

Abstract:

Keywords:

基金项目(Foundation): 环境-力学耦合作用下焊接管道表面纳米化对应力腐蚀开裂性能的影响(51105383)

作者(Author): 王炳英,司姗姗,苗燕

DOI: 10.13289/j.issn.1009-6264.2014.12.037

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