Investigation in Crack Growth of A537 Steel and Its Weld Metal in Artificial Sea Water

Abstract

Abstract: The crack growth rates of A537 c1.1 steel and its weld metal have been investigated both in air and in artificial sea water.The effects of stress ratio,frequency,residual stress of welds as well as corrosion products on cor- rosion fatigue crack growth rate have been exa- mined.Some electrochemical reactions occurred during tests and models for describing the cor- rosion fatigue crack growth process in low strength of offshore structural steel were discussed.

Key words: crack growth, stress ratio effect, corrosion fatigue

ZANG Qishan LIU Kang KE Wei ZHU Ziyong Laboratory of Fatigue and Fracture of Sinica,Materials,IMR,China.Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China.. Investigation in Crack Growth of A537 Steel and Its Weld Metal in Artificial Sea Water[J]. J Mater Sci Technol, 1989, 5(4): 254-258.

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Investigation in Crack Growth of A537 Steel and Its Weld Metal in Artificial Sea Water

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