Heterogeneity of Deformation in Cold-Rolled Brass

[+] Author and Article Information
N. J. Thompson, W. L. Bradley

Department of Mechanical Engineering, Texas A&M University, College Station, Tex.

J. Eng. Ind 100(2), 217-221 (May 01, 1978) (5 pages) doi:10.1115/1.3439412 History: Received August 01, 1977; Online July 15, 2010


The heterogeneity of deformation produced in alpha brass during cold rolling for various deformation zone geometries has been studied. The strain variation through the thickness was measured indirectly using indentation hardness. The redundant strain factor Φ, which is the ratio of the average strain through the thickness to the geometric strain, was found to increase from 1.0 to 16.3 as the deformation zone height to width ratio (Δ) increased from 1.0 to 11.2. Slip line field predictions of the redundant strain factor for various Δ values were made assuming no friction and no strain hardening. The predictions were in surprisingly good agreement with the experimental observations.

Copyright © 1978 by ASME
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