Effective dimensionality of the Portevin - Le Chatelier effect

Details Effective dimensionality of the Portevin - Le Chatelier effect Effective dimensionality of the Portevin - Le Chatelier effect

2009-10-08

arxiv.org/abs/0910.1450v1

Phil. Mag. Lett. 90 (2010) 149-157

Physics

Condensed Matter

Materials Science

12 pages, 5 figures

Scientific paper

Tensile tests have been carried out by deforming polycrystalline samples of substitutional Al-2.5%Mg alloy at room temperature at a range of strain rates. The Portevin - Le Chatelier (PLC) effect was observed. From an analysis of the experimental stress versus time series data we have inferred that the dynamics of the PLC effect in a local finite time is controlled by a finite number of degrees of freedom and this effective dimension becomes reduced with increasing strain.

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