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Strain-rate history effects and microstructural aspects in lithium fluoride and aluminium single crystals after dynamic loading |
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| Authors: | C. Y. Chiem J. Duffy |
| Affiliation: | (1) E.N.S.M., Laboratoire de Physique du Métal, 1 rue de la Noë, F-44072 Nantes Cedex, France;(2) Division of Engineering, Brown University, Box D, 02912 Providence, RI, USA |
| Abstract: | Single crystals of LiF and Al are deformed in shear at a number of constant strain-rates in the range 10–4 to 1600 s–1. These constant rate tests are supplemented by a series of jump tests in which a sharp increment in strain rate is imposed during the quasi-static straining. Dislocation arrangements are observed by etch-pits technique for LiF crystals and by TEM for Al crystals. It is shown that cell sizes vary inversely with flow stress and strain-rate sensitivity. |
| Keywords: | Strain-rate history effect dynamic torsional loading single-crystal dislocation arrangement Kolsky bar |
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