Journal
JOURNAL OF MATERIALS RESEARCH
Volume 27, Issue 21, Pages 2724-2736Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2012.303
Keywords
-
Categories
Funding
- Center for Integrated Nanotechnologies (CINT), a DOE nanoscience center
- Berkeley nuclear research center (BNRC)
- NRC faculty development grant [NRC-38-09-948]
- Austrian Science Fund (FWF) [J2834-N20]
- U.S. Department of Energy [DE-AC02-05CH11231]
Ask authors/readers for more resources
Small-scale testing techniques such as nanoindentation and micro-/nanocompression are promising methods for addressing mechanical properties of ion-beam-irradiated materials. We performed different proton irradiations and critically evaluated the results obtained from nanoindentation and pillar compression, both performed parallel and perpendicular to the irradiation direction. Experiments parallel to beam direction suffer from variation of material properties with penetration depth. This is improved by cross-sectional experiments, thereby probing the effect of different doses along the beam penetration depth on mechanical properties. Finally, we demonstrate that, compared with nanoindentation, miniaturized uniaxial compression experiments offer a more reliable and straightforward interpretation of the mechanical data, as they impose a nominally uniaxial stress on a well-defined volume at a specific position. Moreover, the exposed pillar geometry is not influenced by surface contamination and enables in situ observation of the governing mechanical processes, which is typically not possible during indentation experiments in a half-space geometry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available