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Anomalous temperature dependence of the yield stress by {1122}〈1123〉secondary pyramidal slip in cadmium crystals—I. Experiments

Tonda, Hideki and Ando, Shinji and Takashima, Kazuki and Vreeland, Thad, Jr. (1994) Anomalous temperature dependence of the yield stress by {1122}〈1123〉secondary pyramidal slip in cadmium crystals—I. Experiments. Acta Metallurgica et Materialia, 42 (8). pp. 2845-2851. ISSN 0956-7151.

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Yield stress σ_y due to {1122}〈1123〉slip (SPCS) in cadmium crystals is proportional to temperature T (anomalous temperature dependence). An increment of strain rate causes σ_y to increase. The deformation proceeds inhomogeneously with the nucleation and growth of bundles of slip steps (BSS) which correspond to etch pit bands (EPB). The strain ϵB in BSS or EPB is constant independent of applied strain. The density of dislocations in EPB is nearly constant independent of strain, strain rate and T. ϵ_B and the mean free path of edge dislocations decrease exponentially with increasing T. The above results suggest that the deformation mode by SPCS is similar to Lüders deformation and the growth rate of BSS or EPB width increases with increasing T and strain rate. The anomalous temperature dependence is interpreted by the immobilization of edge dislocations and the growth rate related with double cross slip.

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Additional Information:© 1994 Elsevier Science Ltd. Received 29 September 1993.
Issue or Number:8
Record Number:CaltechAUTHORS:20150325-080643601
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Official Citation:Hideki Tonda, Shinji Ando, Kazuki Takashima, Thad Vreeland Jr., Anomalous temperature dependence of the yield stress by {1122}〈1123〉 secondary pyramidal slip in cadmium crystals—I. Experiments, Acta Metallurgica et Materialia, Volume 42, Issue 8, August 1994, Pages 2845-2851, ISSN 0956-7151, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56053
Deposited By: Tony Diaz
Deposited On:25 Mar 2015 16:22
Last Modified:03 Oct 2019 08:10

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