Nanocrystalline and nanolaminated materials show enhanced radiation tolerance compared with their coarse-grained counterparts, since grain boundaries and layer interfaces act as effective defect sinks. Although the effects of layer interface and layer thickness on radiation tolerance of crystalline nanolaminates have been systematically studied, radiation response of crystalline/amorphous nanolaminates is rarely investigated. In this study, we show that irradiation can lead to formation of nanocrystals and nanotwins in amorphous CuNb layers in Cu/amorphous-CuNb nanolaminates. Substantial element segregation is observed in amorphous CuNb layers after irradiation. In Cu layers, both stationary and migrating grain boundaries effectively interact with defects. Furthermore, there is a clear size effect on irradiation-induced crystallization and grain coarsening. In situ studies also show that crystalline/amorphous interfaces can effectively absorb defects without drastic microstructural change, and defect absorption by grain boundary and crystalline/amorphous interface is compared and discussed. Furthermore, our results show that tailoring layer thickness can enhance radiation tolerance of crystalline/amorphous nanolaminates and can provide insights for constructing crystalline/amorphous nanolaminates under radiation environment.
Fan, Zhe, et al. "An in situ study on Kr ion–irradiated crystalline Cu/amorphous-CuNb nanolaminates." Journal of Materials Research, vol. 34, no. 13, Mar. 2019. https://doi.org/10.1557/jmr.2019.24
Fan, Zhe, Fan, Cuncai, Li, Jin, et al., "An in situ study on Kr ion–irradiated crystalline Cu/amorphous-CuNb nanolaminates," Journal of Materials Research 34, no. 13 (2019), https://doi.org/10.1557/jmr.2019.24
@article{osti_1559042,
author = {Fan, Zhe and Fan, Cuncai and Li, Jin and Shang, Zhongxia and Xue, Sichuang and Kirk, Marquis A. and Li, Meimei and Wang, Haiyan and Zhang, Xinghang},
title = {An in situ study on Kr ion–irradiated crystalline Cu/amorphous-CuNb nanolaminates},
annote = {Nanocrystalline and nanolaminated materials show enhanced radiation tolerance compared with their coarse-grained counterparts, since grain boundaries and layer interfaces act as effective defect sinks. Although the effects of layer interface and layer thickness on radiation tolerance of crystalline nanolaminates have been systematically studied, radiation response of crystalline/amorphous nanolaminates is rarely investigated. In this study, we show that irradiation can lead to formation of nanocrystals and nanotwins in amorphous CuNb layers in Cu/amorphous-CuNb nanolaminates. Substantial element segregation is observed in amorphous CuNb layers after irradiation. In Cu layers, both stationary and migrating grain boundaries effectively interact with defects. Furthermore, there is a clear size effect on irradiation-induced crystallization and grain coarsening. In situ studies also show that crystalline/amorphous interfaces can effectively absorb defects without drastic microstructural change, and defect absorption by grain boundary and crystalline/amorphous interface is compared and discussed. Furthermore, our results show that tailoring layer thickness can enhance radiation tolerance of crystalline/amorphous nanolaminates and can provide insights for constructing crystalline/amorphous nanolaminates under radiation environment.},
doi = {10.1557/jmr.2019.24},
url = {https://www.osti.gov/biblio/1559042},
journal = {Journal of Materials Research},
issn = {ISSN applab},
number = {13},
volume = {34},
place = {United States},
publisher = {Materials Research Society},
year = {2019},
month = {03}}
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 267, Issue 8-9https://doi.org/10.1016/j.nimb.2009.01.081
Ziegler, James F.; Ziegler, M. D.; Biersack, J. P.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 268, Issue 11-12https://doi.org/10.1016/j.nimb.2010.02.091