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| Influences of Applied Tensile Stress on the Pitting Electrochemical Behavior of X80 Pipeline Steel |
| YUAN Wei，HUANG Feng，HU Qian，LIU Jing，HOU Zhenyu |
| School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081,China |
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Abstract Abstract：The influence of applied tensile stress on the pitting electrochemical behavior of X80 pipeline steel in NaHCO3 + NaCl solution was investigated by using electrochemical noise measurement combining with potentiodynamic polarization measurement. The results showed that the pitting of X80 pipeline steel was inhibited when the applied tensile stress lower than 100 MPa, and the lower the stress was, the weaker the inhibition was. The pitting of X80 pipeline steel was promoted when applied tensile stress higher than 200 MPa, and the higher the stress was, the stronger the promotion role was.
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