Journal article icon

Journal article

Calibration and data-analysis routines for nanoindentation with spherical tips

Abstract:
Instrumented spherical nanoindentation with a continuous stiffness measurement has gained increased popularity in microphysical investigations of grain boundaries, twins, dislocation densities, ion-induced damage, and more. These studies rely on different methodologies for instrument and tip calibration. Here, we test, integrate, and re-adapt published strategies for tip and machine-stiffness calibration for spherical tips. We propose a routine for independently calibrating the effective tip radius and the machine stiffness using standard reference materials, which requires the parametrization of the effective radius as a function of load. We validate our proposed workflow against key benchmarks and apply the resulting calibrations to data collected in materials with varying ductility to extract indentation stress–strain curves. We also test the impact of the machine stiffness on recently proposed methods for identification of yield stress. Finally, we synthesize these analyses in a single workflow for use in future studies aiming to extract and process data from spherical nanoindentation.
Publication status:
Published
Peer review status:
Peer reviewed

Actions


Access Document


Publisher copy:
10.1557/s43578-023-01041-6

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author


Publisher:
Springer Nature
Journal:
Journal of Materials Research More from this journal
Volume:
38
Pages:
4042–4056
Publication date:
2023-08-18
Acceptance date:
2023-05-09
DOI:
EISSN:
2044-5326
ISSN:
0884-2914


Language:
English
Keywords:
Pubs id:
1517731
Local pid:
pubs:1517731
Deposit date:
2023-09-09

Terms of use



Views and Downloads






If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP