Markov Property of Continuous Dislocation Band Propagation

A. Chatterjee; A. Sarkar; N. Gayathri; P. Barat; P. Mukherjee; Sourav Bhattacharya

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arxiv 0802.2754 v2 pith:OI4NDO2D submitted 2008-02-20 cond-mat.mtrl-sci

Markov Property of Continuous Dislocation Band Propagation

A. Chatterjee , A. Sarkar , Sourav Bhattacharya , P. Mukherjee , N. Gayathri , P. Barat This is my paper

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keywords banddislocationmarkovpropagationstraintypeal-2alloy

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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.

Markov Property of Continuous Dislocation Band Propagation

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