The correlation of indentation size effect experiments with pyramidal and spherical indenters


Experiments were conducted in annealed iridium using pyramidal and spherical indenters over a wide range of load. For a Berkovich pyramidal indenter, the hardness increased with decreasing depth of penetration. However, for spherical indenters, hardness increased with decreasing sphere radius. Based on the number of geometrically necessary dislocations generated during indentation, a theory that takes into account the work hardening differences between pyramidal and spherical indenters is developed to correlate the indentation size effects measured with the two indenters. The experimental results verify the theoretical correlation.

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Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
College of Engineering & Physical Sciences
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Uncontrolled Keywords: annealed iridium,pyramidal indenters,spherical indenters, Iridium alloys,Indentation,Indentation size effect
Publication ISSN: 0272-9172
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://journals ... ine&aid=8226658 (Publisher URL)
PURE Output Type: Article
Published Date: 2001
Authors: Swadener, J.G. (ORCID Profile 0000-0001-5493-3461)
George, E.P.
Pharr, G.M.



Version: Accepted Version

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