Quantitative residual strain analyses on strain hardened nickel based alloy

Toshio Yonezawa, Takaharu Maeguchi, Toru Goto, Hou Juan

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    4 Citations (Scopus)

    Abstract

    Many papers have reported about the effects of strain hardening by cold rolling, grinding, welding, etc. on stress corrosion cracking susceptibility of nickel based alloys and austenitic stainless steels for LWR pipings and components. But, the residual strain value due to cold rolling, grinding, welding, etc. is not so quantitatively evaluated. Therefore, authors quantitatively measured and evaluated the residual strain value for strain hardened tensile or torsion specimens of nickel based alloys by applied strain, FWHM of gamma X-ray diffraction, EBSD and Vickers' hardness measurement to make a calibration curve, at first. Using these curves, the residual strain in the heat affected zone of weld joint and cold worked plates, etc., was quantitatively evaluated from the measuring data of Vickers' hardness or EBSD or FWHM of gamma peak in X-ray diffraction. As a result, residual strain value in the heat affected zone of weld joint was evaluated as about 10% of von Mises equivalent strain from FWHM, EBSD and Vickers' hardness measurement. But the residual strain of the 20% and 30 % cold rolled Alloy 600 or TT690 were evaluated about 40% and 60 % of von Mises equivalent strain, respectively.

    Original languageEnglish
    Title of host publication15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
    Pages1666-1678
    Number of pages13
    Publication statusPublished - 2011 Dec 1
    Event15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011 - Colorado Springs, CO, United States
    Duration: 2011 Aug 72011 Aug 11

    Publication series

    Name15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
    Volume3

    Other

    Other15th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors 2011
    Country/TerritoryUnited States
    CityColorado Springs, CO
    Period11/8/711/8/11

    Keywords

    • Alloy 600
    • Alloy 690
    • Cold rolled plate
    • EBSD
    • FWHM
    • Heat affected zone
    • Vickers' hardness
    • Von Mises equivalent strain
    • Weld joint
    • X-ray diffraction

    ASJC Scopus subject areas

    • Nuclear Energy and Engineering
    • Pollution

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