Portevin–Le Chatelier effect

Scott V. Franklin, F. Mertens, and M. Marder
Phys. Rev. E 62, 8195 – Published 1 December 2000
PDFExport Citation

Abstract

Aluminum subjected to smooth mechanical loading does not often deform in a correspondingly smooth manner. Typically it deforms inhomogeneously through the propagation of deformation fronts that slowly traverse the sample. These are called Portevin–Le Chatelier fronts; what determines their velocity has been somewhat mysterious. We present a phenomenological theory for deformation fronts that centers on a nonlocal rate dependence of the flow stress. In a one-dimensional idealization the equations can be solved exactly, and compared directly with experiment. Many significant features of deformation fronts are captured, including a well-known transition from hopping to continuous front motion. The phenomenology’s predictions are confirmed by our experiments.

  • Received 29 November 1999

DOI:https://doi.org/10.1103/PhysRevE.62.8195

©2000 American Physical Society

Authors & Affiliations

Scott V. Franklin*, F. Mertens, and M. Marder

  • Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Austin, Texas 78712

  • *Present address: Department of Physics, Rochester Institute of Technology, Rochester, NY 14623.

Comments & Replies

Reply to “Comment on ‘Portevin–Le Chatelier effect’ ”

Scott V. Franklin, M. Marder, and F. Mertens
Phys. Rev. E 65, 053502 (2002)

Comment on “Portevin–Le Chatelier effect”

L. P. Kubin, G. Ananthakrishna, and C. Fressengeas
Phys. Rev. E 65, 053501 (2002)

References (Subscription Required)

Click to Expand
Issue

Vol. 62, Iss. 6 — December 2000

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×