BROWSE

Related Researcher

Author

Kim, Young-Cheon
Robust Multifunctional Materials Lab
Research Interests
  • Effect of Material Characteristic Lengths on Mechanical Behavior of Metals

ITEM VIEW & DOWNLOAD

Indentation size effect for spherical nanoindentation on nanoporous gold

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Indentation size effect for spherical nanoindentation on nanoporous gold
Author
Kim, Young-CheonGwak, Eun-JiAhn, Seung-MinKang, Na-RiHan, Heung NamJang, Jae-ilKim, Ju-Young
Keywords
Nanoporous gold; Nanoindentation; Porous materials; Hardness; Indentation size effect
Issue Date
201801
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
SCRIPTA MATERIALIA, v.143, no., pp.10 - 14
Abstract
We find that the indentation size effect (ISE) occurs during spherical indentation on nanoporous gold (np-Au). The hardness increases as the indenter radius decreases at a fixed representative strain. We prepare np-Au samples with a ligament size of 26 nm by free-corrosion dealloying and perform multiple spherical nanoindentations with nominal indenter radii of 4, 12, and 50 μm. A nanomechanics model for the ISE during spherical indentation is developed, and the model accurately describes the hardness depending on the indenter radius. We also correlate the ISE trends of spherical and Berkovich indentations along with their differences in terms of the representative strain and the indentation work.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/j.scriptamat.2017.09.002
ISSN
1359-6462
Appears in Collections:
MSE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU