SYMPOSIA PAPER Published: 01 January 1988

The Role of Cross-Slip of Screw Dislocations in Fatigue Behavior of Copper Single Crystals


Differently oriented copper single crystals were fatigued, where the Schmid factor for primary screw dislocations moving on the cross-slip plane differed markedly while that for primary slip remained more or less constant. The experimental results show that the cyclic hardening rate depends on crystal orientation. The saturation properties, the saturation stress, and the plastic strain in the persistent slipbands, are orientation independent. It seems likely that cross-slip is important only in the early stage of cyclic deformation, but not in the saturation.

Author Information

Jin, NY
Cavendish Laboratory, Cambridge, England Shanghai Jiao Tong University, Shanghai, China
Winter, AT
Cavendish Laboratory, Cambridge, England
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Developed by Committee: E08
Pages: 17–25
DOI: 10.1520/STP23207S
ISBN-EB: 978-0-8031-5034-8
ISBN-13: 978-0-8031-0925-4