THE MECHANICAL THRESHOLD OF DYNAMICALLY DEFORMED COPPER AND NITRONIC 40
Open Access
- 1 August 1985
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 46 (C5) , C5-25
- https://doi.org/10.1051/jphyscol:1985504
Abstract
Measurements of the mechanical threshold, or threshold stress, are reported on quasi-statically and dynamically deformed copper and Nitronic 40. The results for copper show that the increase of the threshold stress with strain rate is similar to that of the flow stress. In Nitronic 40 the results show that the ratio of the flow stress to the threshold stress is ~0.6. Both results indicate that the increased rate sensitivity found in these materials at high strain rates is not due to the predominance of a viscous drag deformation mechanism, as has been previously suggestedKeywords
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