Cai, B;
Lee, PD;
Karagadde, S;
Marrow, TJ;
Connolley, T;
(2016)
Time-resolved synchrotron tomographic quantification of deformation during indentation of an equiaxed semi-solid granular alloy.
Acta Materialia
, 105
pp. 338-346.
10.1016/j.actamat.2015.11.028.
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Abstract
Indentation is a well-established technique for measuring mechanical properties, such as hardness and creep, in solid materials at a continuum level. In this study, we performed indentation of a semi-solid granular alloy with an equiaxed dendritic microstructure. The resulting microstructural effects were quantified using a novel thermo-mechanical setup combined with 4D (three spatial dimensions plus time) synchrotron tomography and digital volume correlation. The experiments not only revealed the multitude of deformation mechanisms occurring at a microstructural level, (e.g. dilatancy, liquid flow, macrosegregation, shrinkage voids, and intra-granular deformation), but also allowed quantification of the evolution of the strain fields within the material. The resulting methodology is a powerful tool for assessing the evolution of localized deformation and hence material properties.
| Type: | Article |
|---|---|
| Title: | Time-resolved synchrotron tomographic quantification of deformation during indentation of an equiaxed semi-solid granular alloy |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.actamat.2015.11.028 |
| Publisher version: | https://doi.org/10.1016/j.actamat.2015.11.028 |
| Language: | English |
| Additional information: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Granular materials, Semi-solid, Indentation, X-ray tomography, Digital volume correlation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10062981 |
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