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    STP1576

    In-Situ Synchrotron X-Ray Study of the Elevated Temperature Deformation Response of SS 316L Pressurized Creep Tubes

    Published: 2014


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    Abstract

    A high-energy diffraction technique is presented that uses synchrotron X-rays to characterize the in situ deformation response of pressurized creep tubes at elevated temperature. In addition to the X-ray diffraction measurement, the technique allows the macroscopic creep strain to be measured simultaneously during X-ray exposure. We demonstrated this technique in two areas at different temperatures in the tube specimen. From the X-ray diffraction patterns, we obtained a typical creep curve with identifiable secondary and tertiary creep response at the high temperature area, and only observed the secondary creep response at the low temperature area. The diffraction peak broadening analysis directly showed the development of the dislocation structures and lattice strain during deformation and make it possible to track the development of creep void nucleation, growth and coalescence.

    Keywords:

    synchrotron radiation, pressurized creep tubes, creep


    Author Information:

    Mo, Kun
    Department of Nuclear, Plasma, and Radiological Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL

    Argonne National Laboratory, Argonne, IL

    Tung, Hsiao-Ming
    Institute of Nuclear Energy Research, Longtan, Taoyuan

    Chen, Xiang
    Oak Ridge National Laboratory, Oak Ridge, TN

    Yun, Di
    Argonne National Laboratory, Argonne, IL

    Miao, Yinbin
    Department of Nuclear, Plasma, and Radiological Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL

    Chen, Weiying
    Department of Nuclear, Plasma, and Radiological Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL

    Almer, Jonathan
    Argonne National Laboratory, Argonne, IL

    Novak, April
    Department of Nuclear, Plasma, and Radiological Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL

    Stubbins, James F.
    Department of Nuclear, Plasma, and Radiological Engineering, Univ. of Illinois at Urbana–Champaign, Urbana, IL


    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP157620140014