Strain Cycling Effects in 1100 Aluminum

[+] Author and Article Information
H. A. Moreen

Metallurgical Engineering, University of Washington, Seattle, Wash.; The Boeing Company, Renton, Wash.

J. Basic Eng 92(1), 126-130 (Mar 01, 1970) (5 pages) doi:10.1115/1.3424919 History: Received June 04, 1969; Online October 27, 2010


The cyclic hysteresis-loop stress-strain behavior, i.e., the hysteresis-loop-shape, of 1100 aluminum was investigated. A power function:

ep = K1Sn1 + K2Sn2
describes the saturated hysteresis-loop-shape behavior. The exponents n1 and n2 are hysteresis-loop strain-hardening exponents corresponding to the behavior at high and low values of strain and are material properties with the values 0.12 and 0.02, respectively, for annealed material. The flow stress parameters, K1 and K2 , depend on cyclic history and plastic anisotropy. A dislocation shuttling model is consistent with the observed behavior.

Copyright © 1970 by ASME
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