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  1. No Access

    Article

    In Situ High-Cycle Fatigue Reveals Importance of Grain Boundary Structure in Nanocrystalline Cu-Zr

    Nanocrystalline metals typically have high fatigue strengths but low resistance to crack propagation. Amorphous intergranular films are disordered grain boundary complexions that have been shown to delay crac...

    Jennifer D. Schuler, Christopher M. Barr, Nathan M. Heckman, Guild Copeland… in JOM (2019)

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    Article

    Interplay Between Grain Boundaries and Radiation Damage

    The need for enhanced radiation-tolerant materials for advanced nuclear energy designs has resulted in a growing number of investigations that have explored the effect of grain boundaries under irradiation. Th...

    Christopher M. Barr, Osman El-Atwani, Djamel Kaoumi, Khalid Hattar in JOM (2019)

  3. No Access

    Article

    Application of In Situ TEM to Investigate Irradiation Creep in Nanocrystalline Zirconium

    This work characterizes the irradiation creep response of nanocrystalline zirconium by nanoscale quantitative tensile loading and ion irradiation experiments performed simultaneously in situ inside a transmiss...

    Daniel C. Bufford, Christopher M. Barr, Baoming Wang, Khalid Hattar, Aman Haque in JOM (2019)