Cavity Evolution at Grain Boundaries as a Function of Radiation Damage and Thermal Conditions in Nanocrystalline Nickel

Brittany Muntifering; Sarah Jane Blair; Cajer Gong; Aaron Dunn; Remi Dingreville; Jianmin Qu; Khalid Hattar

doi:10.1080/21663831.2015.1121165

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Cavity Evolution at Grain Boundaries as a Function of Radiation Damage and Thermal Conditions in Nanocrystalline Nickel

Original Reports | 更新时间：2026-08-19

- Cavity Evolution at Grain Boundaries as a Function of Radiation Damage and Thermal Conditions in Nanocrystalline Nickel
- Materials Research Letters Vol. 4, Issue 2, Pages: 96-103(2016)
- 作者机构：
  
  1. Department of Civil and Environmental Engineering Northwestern University Evanston
  2. Department of Chemical Engineering University of New Mexico Albuquerque
  3. Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh
  4. Sandia National Laboratories Albuquerque 85 USA,NM871
  5. W. Woodruff School of Mechanical Engineering Georgia Institute of Technology UMI Georgia Tech CNRS,George,2958
  6. Sandia National Laboratories Albuquerque
  7. Department of Civil and Environmental Engineering Northwestern University Evanston 08 USA,IL602
  8. School of Engineering Tufts University Medford
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2015.1121165
  CLC：
- Online First：30 December 2015，
  
  Published：2016
- 稿件说明：
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Brittany Muntifering, Sarah Jane Blair, Cajer Gong, et al. Cavity Evolution at Grain Boundaries as a Function of Radiation Damage and Thermal Conditions in Nanocrystalline Nickel[J]. Materials Research Letters, 2016, 4(2): 96-103.
DOI：

Brittany Muntifering, Sarah Jane Blair, Cajer Gong, et al. Cavity Evolution at Grain Boundaries as a Function of Radiation Damage and Thermal Conditions in Nanocrystalline Nickel[J]. Materials Research Letters, 2016, 4(2): 96-103. DOI： 10.1080/21663831.2015.1121165.

摘要

Abstract

Enhanced radiation tolerance of nanostructured metals is attributed to the high density of interfaces that can absorb radiation-induced defects. Here

cavity evolution mechanisms during cascade damage

helium implantation

and annealing of nanocrystalline nickel are characterized via

in situ

transmission electron microscopy (TEM). Films subjected to self-ion irradiation followed by helium implantation developed evenly distributed cavity structures

whereas films exposed in the reversed order developed cavities preferentially distributed along grain boundaries. Post-irradiation annealing and orientation mapping demonstrated uniform cavity growth in the nanocrystalline structure

and cavities spanning multiple grains. These mechanisms suggest limited ability to reduce swelling

despite the stability of the nanostructure.

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