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Title: Spherical indentation response of a Ni double gyroid nanolattice
Authors: Prusty, R. K.
Narayan, R. L.
Scherer, M.
Steiner, U.
Deshpande, V. S.
Fleck, N. A.
Ramamurty, Upadrasta
Keywords: Engineering::Mechanical engineering
Issue Date: 2020
Source: Prusty, R. K., Narayan, R. L., Scherer, M., Steiner, U., Deshpande, V. S., Fleck, N. A. & Ramamurty, U. (2020). Spherical indentation response of a Ni double gyroid nanolattice. Scripta Materialia, 188, 64-68.
Journal: Scripta Materialia
Abstract: The effect of indentation strain εi upon hardness H and elastic modulus E of a Ni Double Gyroid (DG) nanolattice was investigated using a spherically-tipped nanoindenter. H remains invariant, while E decreases linearly, with increasing εi. Results reveal the progressive collapse of the DG lattice beneath the indenter. The measured values of H and extrapolated value of E at εi = 0 were used to estimate the yield strength and elastic modulus of the Ni cell walls. The latter was compared with the ideal strength of Ni, nanocrystalline films and of sub-100 nm diameter single crystals.
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2020.07.011
Rights: © 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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