The correlation of indentation size effect experiments with pyramidal and spherical indenters [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2001.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 6 pages : digital, PDF file
Additional Creators:: Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

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.

Report Numbers:

E 1.99:la-ur-01-6528
la-ur-01-6528

Subject(s):

Materials Science

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Note:

Published through SciTech Connect.
01/01/2001.
"la-ur-01-6528"
Submitted to: 2001 MRS Fall Meeting/Materials Research Society, November 26-30, 2001, Boston, MA.
Swadener, J. G.; George, Easo P.; Pharr, G.M.

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