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Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

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Influence of surface-roughness on indentation size effect

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Title
Influence of surface-roughness on indentation size effect
Author
Kim, Ju-YoungKang, Seung-KyunLee, Jung-JunJang, Jae-ilLee, Yun-HeeKwon, Dongil
Keywords
Hardness; Indentation size effect; Nanoindentation; Surface-roughness
Issue Date
2007-06
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ACTA MATERIALIA, v.55, no.10, pp.3555 - 3562
Abstract
During nanoindentation of a material with a naturally rough-surface, a flattening of the rough-surface is additionally accomplished compared to nanoindentation on a flat surface. By separating analytically the work expended to flatten the rough-surface and to deform the flattened surface, we develop here a new rough-surface indentation size effect (ISE) model. This new model is applied to nanoindentation results for three Ni samples of different surface-roughness and the applicability of the model is discussed in terms of a critical contact depth for the surface-roughness effect on ISE.
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DOI
10.1016/j.actamat.2007.02.006
ISSN
1359-6454
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MSE_Journal Papers
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