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Further analysis of the size effect in indentation hardness tests of some metals

Published online by Cambridge University Press:  03 March 2011

M. Atkinson
M. Atkinson
Affiliation:
Golden Gully Road, Jamberoo, New South Wales 2533, Australia
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Abstract

The variation of apparent hardness observed in previously reported Vickers indentation tests of metals is reexamined. Common deseriptions of the effect are shown to be inaccurate: the variation of apparent hardness is monotonic but not simple. The effect is consistent with varying size of a previously postulated “plastic hinge” at the perimeter of the indent. This complexity confers uncertainty on the estimation of characteristic macrohardness from small scale tests. Association of the indentation size effect with friction and with strain hardening is confirmed.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 11 , November 1995 , pp. 2908 - 2915
Copyright
Copyright © Materials Research Society 1995

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References

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