A dynamical model for the Portevin–Le Chatelier bands

We show that an extension of Ananthakrishna’s model to include spatial degrees of freedom produces spatially uncorrelated bands, hopping type and the continuously propagating type with increasing applied strain rate. The velocity of the continuously propagating bands is found to vary linearly with a...

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Bibliographic Details
Published in:Scripta materialia 2003-05, Vol.48 (9), p.1355-1360
Main Authors: Bharathi, M.S., Rajesh, S., Ananthakrishna, G.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Deformation and plasticity (including yield, ductility, and superplasticity)
Dislocation densities
Dynamic strain aging
Dynamical model
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Metals. Metallurgy
Physics
Types of bands
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Summary:We show that an extension of Ananthakrishna’s model to include spatial degrees of freedom produces spatially uncorrelated bands, hopping type and the continuously propagating type with increasing applied strain rate. The velocity of the continuously propagating bands is found to vary linearly with applied strain rate.
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(02)00653-X