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Influence of residual tensile stress on stress corrosion behavior of the base metal of X80 pipe

  • Qingren Xiong
  • , Daoxin Liu
  • , Guanjun Zhang
  • , Jiming Zhang
  • , Changyi Qin
  • , Zipeng Xu
  • China National Petroleum Corporation
  • Northwestern Polytechnical University Xian

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

The influence of residual stress on stress corrosion behavior was studied by way of SSRT test on the base metal of X80 pipe with different residual tensile stress in the simulating soil environment aqueous solution; and the electrochemical test techniques were adopted to test the effect of the residual stress on electrochemical polarization behavior and AC impedance characteristics of the base metal. It is shown that the base metal specimens without introducing the residual stress of X80 UOE pipe and X80 SAWH pipe have different stress corrosion sensitivity in this solution. The base metal specimens with different residual stress of X80 pipe only occurs the anodic metal dissolution reaction on the material surface in this kind of solution without forming the passive film.The residual tensile stress leads to the increase of the electrochemical activity and the reduction of impedance of the base metal surface of X80 pipe, and it accelerates the nucleation and early propagation of the stress corrosion crack, which promotes the SCC sensitivity of the base metal.

源语言英语
主期刊名Codes and Standards
出版商American Society of Mechanical Engineers (ASME)
ISBN(电子版)9780791845981
DOI
出版状态已出版 - 2014
活动ASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, 美国
期限: 20 7月 201424 7月 2014

丛书

姓名American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
1
ISSN(印刷版)0277-027X

会议

会议ASME 2014 Pressure Vessels and Piping Conference, PVP 2014
国家/地区美国
Anaheim
时期20/07/1424/07/14

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