Hot Nanoindentation of Nanocrystalline Ni-W Alloys
Name
Schuh-Hot Nanoindentation of Nanocrystalline with figures.pdf
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928.74 KB
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Adobe PDF
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Author(s)
Trelewicz, Jason R.
Schuh, Christopher A.
Date Issued
August 2009
Journal
Scripta Materialia
Publisher
Elsevier
Citation
Trelewicz, Jason R., and Christopher A. Schuh. “Hot nanoindentation of nanocrystalline Ni–W alloys.” Scripta Materialia 61.11 (2009): 1056-1059.
Version
Author's final manuscript
Abstract
High-temperature nanoindentation experiments are conducted to assess the activation enthalpy for deformation of nanocrystalline Ni–W alloys, for grain sizes between 3 and 80 nm. Thermal softening becomes less pronounced at finer grain sizes, and the activation enthalpy has an apparent inflection at a grain size near ∼10–20 nm, in the vicinity of the Hall–Petch breakdown. This inflection is related to that observed in the activation volume for deformation, and is associated with a shift to grain boundary-mediated deformation at the finest grain sizes.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1016/j.scriptamat.2009.08.026
