Fatigue crack growth modelling for pipeline carbon steels under gaseous hydrogen conditions

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• 作者：Ankang Cheng ; Nian-Zhong Chen ; ^{nianzhong.chen@ncl.ac.uk}
• 关键词：Fatigue crack growth ; Fracture mechanics ; Corrosion ; Hydrogen embrittlement ; Pipeline carbon steel
• 刊名：International Journal of Fatigue
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：96
• 期：Complete
• 页码：152-161
• 全文大小：1530 K
• 卷排序：96

文摘

A new corrosion-crack correlation model for fatigue behaviour is proposed. Fatigue crack growth behaviour of pipeline carbon steels in hydrogen gas is described. Formulae for the critical frequency and the transition stress intensity factor are derived. An equation is proposed to calculate plateau stress intensity range KpKp. The model can be applied to various API grade pipeline steels.