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Second-Order Pyramidal Slip in Zinc Single Crystals

Adams, K. H. and Blish, R. C. and Vreeland, T., Jr. (1967) Second-Order Pyramidal Slip in Zinc Single Crystals. Materials Science and Engineering, 2 (4). pp. 201-207. ISSN 0025-5416.

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Measurements of strain, dislocation mobility and dislocation density have been made in 99.999% zinc single crystals stressed at room temperature in compression along the hexagonal axis, [0001]. Slip bands on the〈1213〉{1212}, second-order pyramidal system were observed. Etch pit observations indicate that the average dislocation density increases linearly with strain. The velocity of edge dislocations in slip bands obeys the relation v = v_0(τ/τ_0)^n with v_0 = 1 in./sec, n = 8.7, τ_0 = 870 lb./in.^2, and τ the resolved shear stress in lb./in.2. These observations together with measurements of the strain-rate sensitivity of the flow stress show that the stress dependence of the density of moving dislocations is more important than the stress dependence of the dislocation velocity in determining the strain-rate sensitivity.

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Additional Information:© 1967 Elsevier Publishing Company. Received May 26, 1967: revised July 17, 1967. The authors wish to express their appreciation to the U. S. Atomic Energy Commission for sponsorship of this work under Contract No. AT(04-3)-473 and to Professor D. S. Wood for his interest and advice during the course of this work. The assistance of J. L. Held in the testing and data analysis is gratefully acknowledged. CALT-473-18.
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Atomic Energy CommissionAT(04-3)-473
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Issue or Number:4
Record Number:CaltechAUTHORS:20150120-142940808
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Official Citation:K.H. Adams, R.C. Blish, T. Vreeland Jr., Second-order pyramidal slip in zinc single crystals, Materials Science and Engineering, Volume 2, Issue 4, November 1967, Pages 201-207, ISSN 0025-5416, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53896
Deposited By: Tony Diaz
Deposited On:20 Jan 2015 22:37
Last Modified:03 Oct 2019 07:53

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