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Elastic behavior of an edge dislocation inside the nanoscale coating layer

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Abstract

The problem of an edge dislocation inside the nanoscale coating layer accounting for the interface effects is addressed. By combining the sectionally holomorphic function, Laurent series expansion techniques and the complex variable function method, the stress fields in the coating layer and the image force acting on the edge dislocation are derived analytically. The results indicate that an additional repulsive force or attractive force will act on the edge dislocation for considering the interface effects, and there exists more than one stable (unstable) dislocation equilibrium point. The material elastic dissimilarity, the coating thickness, the interface stress as well as the relative position of the dislocation have great influence on the force acting on the edge dislocation in the coating layer. The present solutions contain previously several known results, which can be shown to be special cases.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, Hunan Province, People’s Republic of China

    Y. W. Liu, Y. X. Zhao & S. Lin

  2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, Hunan Province, People’s Republic of China

    Y. W. Liu, Y. X. Zhao & S. Lin

  3. School of Engineering and Material Sciences, Queen Mary, University of London, London, E1 4NS, UK

    P. H. Wen

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  1. Y. W. Liu
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Correspondence to Y. X. Zhao.

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Liu, Y.W., Zhao, Y.X., Wen, P.H. et al. Elastic behavior of an edge dislocation inside the nanoscale coating layer. Acta Mech 223, 1917–1935 (2012). https://doi.org/10.1007/s00707-012-0689-x

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  • DOI: https://doi.org/10.1007/s00707-012-0689-x

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