@inproceedings{edb5a56dd2554179988af3729956a0c0,
title = "Influence of ultrasonic nanocrystal surface modification on the corrosion and stress corrosion cracking behavior of welded joint in district heating pipe",
abstract = "The effect of ultrasonic nanocrystal surface modification (UNSM) on the corrosion and stress corrosion cracking behavior of welded joint in district heating pipe were investigated. After UNSM treatment, the microstructure of welded joint was transformed from the grain boundary ferrite, widmanst{\"a}tten ferrite to polygonal ferrite and grain refinement. In the electrochemical tests, the corrosion resistance of welded joint was increased after UNSM treatment. The grain refinement and microstructure change influence the oxide film stability, which cause the increase of corrosion resistance. The stress corrosion cracking behavior was measured by slow-strain rate tests with accelerated anodic and cathodic reactions. The results indicated that the UNSM treatment has a significant effect on the corrosion condition, whereas no effect appeared in the hydrogen embrittlement.",
keywords = "Corrosion, Polarization, Steel, Stress corrosion cracking, Weld",
author = "Kim, \{Yong Sang\} and Kim, \{Jung Gu\}",
note = "Publisher Copyright: {\textcopyright} 2017 by NACE International.; Corrosion Conference and Expo 2017 ; Conference date: 26-03-2017 Through 30-03-2017",
year = "2017",
language = "English",
series = "NACE - International Corrosion Conference Series",
publisher = "National Assoc. of Corrosion Engineers International",
pages = "3388--3399",
booktitle = "Corrosion Conference and Expo 2017",
}
