Indentation size effect for spherical nanoindentation on nanoporous gold
- Authors
- Kim, Young-Cheon; Gwak, Eun-Ji; Ahn, Seung-min; Kang, Na-Ri; Han, Heung Nam; Jang, Jae-il; Kim, Ju-Young
- Issue Date
- Jan-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Nanoporous gold; Nanoindentation; Porous materials; Hardness; Indentation size effect
- Citation
- SCRIPTA MATERIALIA, v.143, pp.10 - 14
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 143
- Start Page
- 10
- End Page
- 14
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/17891
- DOI
- 10.1016/j.scriptamat.2017.09.002
- ISSN
- 1359-6462
- 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 mu m. 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.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/17891)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.