Table of Contents
Textures and Microstructures
Volume 26 (1996)–27
http://dx.doi.org/10.1155/TSM.26-27.479

On the Crystallographic Basis of Yield Criteria

Department of Materials Science and Engineering, The University of Michigan, 2034 Dow Building, 2300 Hayward St., Ann Arbor, Ml 48109-2136, USA

Received 10 November 1995; Accepted 10 January 1996

Copyright © 1996 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Consideration of crystallographic texture has lead to a much better understanding of anisotopic yielding behavior than yield criteria postulated without regard to deformation mechanisms. Continuum anisotropic yield criteria have been developed to simulate the results of calculations based on the crystallographic nature of slip. These criteria, which involve high stress exponents, describe actual forming behavior much better than the quadratic yield criterion postulated by Hill. Today it is possible to calculate anisotropic yielding behavior directly from texture data, although for metal forming analyses, some other means must be used to characterize the strain-hardening behavior.