Abstract
A low speed constant strain type of reverse bend corrosion fatigue machine using U-shaped specimens of rectangular section is described. The air-fatigue and corrosion-jatigue behaviour of a carbon steel at the fixed frequency of 1·7 Hz is reported in specimens tested with and without stress concentrations being present in the form of drilled holes. Measurements of corrosion potential and metallographic details of the fatigue cracks are presented. The possibility of establishing a ‘corrosion factor’ for use in conjunction with the well defined stress concentration factor is examined on the basis of the experimental data derived.
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