Markov Property of Continuous Dislocation Band Propagation

Details Markov Property of Continuous Dislocation Band Propagation Markov Property of Continuous Dislocation Band Propagation

2008-02-20

arxiv.org/abs/0802.2754v2

Phy. Lett. A 372 (2008) 4016-4020

Physics

Condensed Matter

Materials Science

17 pages, 8 figures, to appear in Physics Letters A

Scientific paper

10.1016/j.physleta.2008.03.013

Tensile tests were carried out by deforming polycrystalline samples of substitutional Al-2.5%Mg alloy at room temperature for a range of strain rates. The Portevin-Le Chatelier (PLC) effect was observed throughout the strain rate regime. The deformation bands in this region are found to be of type A in nature. From the analysis of the experimental stress time series data we could infer that the dynamics of type A dislocation band propagation is a Markov process.

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