Cathodic-polarization effects on the long/short corrosion-fatigue crack growth rate of an offshore steel

H. Hu, R. Akid

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

We study the cyclic crack growth rate of an offshore steel. Compact specimens with long cracks and cylindrical specimens with short surface cracks were tested in air (at frequencies of 5-10 Hz) and in a 3.5% aqueous solution of NaCl (0.2 Hz). In the presence of cathodic polarization (-950 mV/SCE), the growth rate of long cracks is higher than under the conditions of free corrosion. The plateau appearing in this case in the da/dN-ΔK diagrams indicates the presence of hydrogen embrittlement. For ΔK > 10 MPa, the growth rates of short and long cracks coincide.

源语言英语
页(从-至)902-909
页数8
期刊Materials Science
37
6
DOI
出版状态已出版 - 2001

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