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    Corrosion Fatigue Behavior and Life Prediction Method under Changing Temperature Condition

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    Axially strain controlled low cycle fatigue tests of a carbon steel in oxygenated high temperature water were carried out under changing temperature conditions. Two patterns of triangular wave were selected for temperature cycling. One was in-phase pattern synchronizing with strain cycling and the other was an out-of-phase pattern in which temperature was changed in anti-phase to the strain cycling. The fatigue life under changing temperature condition was in the range of the fatigue life under various constant temperature within the range of the changing temperature. The fatigue life of in-phase pattern was equivalent to that of out-of-phase pattern.

    The corrosion fatigue life prediction method was proposed for changing temperature condition, and was based on the assumption that the fatigue damage increased in linear proportion to increment of strain during cycling. The fatigue life predicted by this method was in good agreement with the test results.


    corrosion fatigue, high temperature water, carbon steel, changing temperature condition, life prediction

    Author Information:

    Kanasaki, H
    Senior research engineer, Takasago R&D Center, Mitubishi Heavy Industries Ltd., Hyogo,

    Hirano, A
    Researcher, Hitachi Laboratory, Hitachi, Ltd., Ibaraki,

    Iida, K
    Professor Emeritus, University of Tokyo, Japan Power Engineering and Inspection Corporation, Tokyo,

    Asada, Y
    Professor, University of Tokyo, Tokyo,

    Committee/Subcommittee: G01.06

    DOI: 10.1520/STP19966S