CUED Publications database

Spherical indentation response of a Ni double gyroid nanolattice

Prusty, RK and Narayan, RL and Scherer, M and Steiner, U and Deshpande, VS and Fleck, NA and Ramamurty, U (2020) Spherical indentation response of a Ni double gyroid nanolattice. Scripta Materialia, 188. pp. 64-68. ISSN 1359-6462

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Abstract

© 2020 Acta Materialia Inc. 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.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 31 Jul 2020 23:19
Last Modified: 17 Sep 2020 02:57
DOI: 10.1016/j.scriptamat.2020.07.011