期刊
CORROSION SCIENCE
卷 53, 期 12, 页码 4026-4032出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.08.005
关键词
Steel; Weight loss; Modeling studies; Pitting corrosion; Welding
资金
- Australian Research Council
Steel pipelines externally exposed to seawater pit more severely in heat-affected weld zones but longer-term quantitative data are scarce. Maximum pit depths and variability are reported for the longitudinal weld in API X56 Spec 5 L grade steel pipeline samples exposed continuously to natural Pacific Ocean seawater for 3.5 years. For the first year maximum pit depths and pit depth variability for the different weld zones were very similar. Both became much greater subsequently, with the greatest increases for the heat affected zone. This is compared with steel composition and grain size and potential reasons for the observations discussed. (C) 2011 Elsevier Ltd. All rights reserved.
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