The effect of work-hardening on the low strain amplitude fatigue of copper crystals
- 1 February 1975
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 31 (2), 411-417
- https://doi.org/10.1080/14786437508228941
Abstract
The effect of work-hardening on the fatigue of single crystals of pure copper was investigated by giving the crystals a pre-stress between 2·0 Kg/mm2 compression and 4·6 Kg/mm2 tension before fatiguing them at a constant plastic strain amplitude of 0·3%. The initial deformation was found to have very little effect on the fatigue properties, the saturation dislocation microstructures and the saturation stress being unaffected. A tensile pre-stress was found to fragment the persistent slip bands and to cause them to be more uniformly distributed than on an initially unstrained crystal.Keywords
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