The correlation of indentation size effect experiments with pyramidal and spherical indenters.
- John G.
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.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 975885
- Report Number(s):
- LA-UR-01-6528; TRN: US201018%%971
- Resource Relation:
- Journal Volume: 695; Conference: Submitted to: 2001 MRS Fall Meeting/Materials Research Society, November 26-30, 2001, Boston, MA
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Indentation Size Effect: A Critical Examination of Experimental Observations and Mechanistic Interpretations
Indentation size effect in tungsten: Quantification of geometrically necessary dislocations underneath the indentations using HR-EBSD
Indenter geometry effects on the measurements of mechanical properties by nanoindentation with sharp indenters
Journal Article
·
Fri Jan 01 00:00:00 EST 2010
· Annual Review of Materials Research
·
OSTI ID:975885
Indentation size effect in tungsten: Quantification of geometrically necessary dislocations underneath the indentations using HR-EBSD
Journal Article
·
Wed Aug 15 00:00:00 EDT 2018
· Materials Characterization
·
OSTI ID:975885
+1 more
Indenter geometry effects on the measurements of mechanical properties by nanoindentation with sharp indenters
Conference
·
Wed May 01 00:00:00 EDT 1996
·
OSTI ID:975885