ISSN: 0090-3973
Page Count: 5

The Influence of Bulk-Solution-Chemistry Conditions on Marine Corrosion Fatigue Crack Growth Rate
Bogar, FD
Chemist, Marine Corrosion Research Laboratory, Naval Research Laboratory, Fla.

Crooker, TW
Mechanical engineer, Fatigue Criteria Section, Material Science and Technology Division, Naval Research Laboratory,

Abstract

An exploratory study has been conducted to determine the influence of bulk-solution-chemistry conditions on corrosion fatigue crack growth rate in high strength alloys. Various solutions commonly employed in studies relating to marine corrosion were evaluated for their relative severity in crack growth rate tests. Related aspects involving aeration and applied cathodic potential were included. The results indicate that bulk-solution-chemistry conditions can influence measured values of corrosion fatigue crack growth rate by as much as a factor of three; however, the relative severity of various solutions can vary, depending on alloy composition.

Keywords:
corrosion, fatigue (materials), crack propagation, steels, aluminum alloys, seawater, fracture mechanics

Paper ID: JTE11217J
DOI: 10.1520/JTE11217J
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