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Limited Effect of Twin Boundaries on Radiation Damage

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The different influences of the general grain boundary and the twin boundary on the cavity formation were investigated in copper irradiated by helium at room temperature. Large number of the cavities with sizes smaller than 5 nm formed after irradiation, which were almost homogenously distributed inside the grains. However, the distribution of the cavities varied near the general grain boundary and the twin boundary. Cavities-depleted zone was readily observed near the general grain boundaries, which was rarely observed near the twin boundaries. Meanwhile, decoration of dense cavities within the grain boundary plane was observed. The results suggested the limited influence of the twin boundaries as the point defect sinks compared with the general grain boundaries.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (No. 11275023) and the National Magnetic Confinement Fusion Program (No. 2011GB110004).

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Authors and Affiliations

  1. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Jin Gao, Zhi-Jun Liu & Fa-Rong Wan

Authors
  1. Jin Gao
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  2. Zhi-Jun Liu
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  3. Fa-Rong Wan
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Correspondence to Fa-Rong Wan.

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Gao, J., Liu, ZJ. & Wan, FR. Limited Effect of Twin Boundaries on Radiation Damage. Acta Metall. Sin. (Engl. Lett.) 29, 72–78 (2016). https://doi.org/10.1007/s40195-015-0363-0

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  • DOI: https://doi.org/10.1007/s40195-015-0363-0

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