It is necessary to know the mechanism of corrosion fatigue crack propagation and the influence of flow rate and electrochemistry for the design of offshore structures. In this study, the effects of flow rate on corrosion fatigue crack propagation was investigated by corrosion fatigue crack growth tests and anodic polarization measurements in flowing and stagnant synthesized sea water environments. The acceleration of crack propagation rate values were high in low flow rate environments and low in high flow rate conditions in corrosion fatigue tests at minus 450mv. In tests at minus 523mv, there was no difference in the rates between high and low flow rate conditions. This behavior is governed by the electrochemical potential and solution chemistry at the crack tip.
|Pages (from-to)||B. 152|
|Journal||Transactions of the Iron and Steel Institute of Japan|
|Publication status||Published - 1986 Dec 1|
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