STP642: Corrosion Fatigue of 5456-H117 Aluminum Alloy in Saltwater

    Chu, HP
    Metallurgist and mechanical engineer, David W. Taylor Naval Ship Research and Development Center, Annapolis, Md

    Macco, JG
    Metallurgist and mechanical engineer, David W. Taylor Naval Ship Research and Development Center, Annapolis, Md

    Pages: 17    Published: Jan 1978


    Abstract

    Fatigue behavior of 5456-H117 aluminum alloy has been studied by fracture mechanics and conventional test methods in air and saltwater environments. The results show that fatigue resistance of the alloy is reduced greatly by the presence of saltwater at low stress or stress intensity levels. Test data of smooth and precracked specimens are combined and discussed with regard to failure predictions.

    Keywords:

    corrosion fatigue, crack propagation, fractures (materials), failure, fatigue tests, stress ratio, S-N, diagrams, Goodman diagram, aluminum alloys


    Paper ID: STP28723S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP28723S


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