کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
768861 897357 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Failure analysis of stress corrosion cracking occurred in a gas transmission steel pipeline
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Failure analysis of stress corrosion cracking occurred in a gas transmission steel pipeline
چکیده انگلیسی

In January 2010, stress corrosion cracking was occurred in a high-pressure gas pipeline steel in northern regions of Iran, after almost 40 years since its installation. In this study, failure mechanisms were determined based on available documents and metallographic studies conducted on this pipeline. The results showed that the applied polyethylene tape coating on the external surface of the pipeline became opened and disbonded in the corroded area causing external surface of buried pipeline to be exposed to wet soil around it. As a result of the chemical interactions and formation of carbonate/bicarbonate solution and with the presence of tensile stresses, stress corrosion cracking occurred in the longitudinal direction and at the outer surface of the pipe. In addition, mechanisms and morphology of cracks propagation due to stress corrosion cracking to internal side of the pipe wall were studied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 18, Issue 3, April 2011, Pages 963–970
نویسندگان
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