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The many facets of deformation mechanism mapping and the application to nanostructured materials

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Abstract

Deformation mechanism maps are well established in the field of high temperature creep for materials having conventional coarse grain sizes but they are almost unknown within the field of nanostructured materials. This paper summarizes the background to deformation mechanism mapping, presents simplified examples that may be used to easily construct appropriate maps for any selected condition, demonstrates the potential extension of this approach to other areas such as creep fracture, and then considers the potential limitations associated with using the same approach to predict the deformation mechanisms in true nanostructured materials. Two representative deformation mechanism maps are shown for an ultrafine-grained alloy processed either by equal-channel angular pressing or by high-pressure torsion.

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Acknowledgments

This work was supported in part by the National Science Foundation of the United States under Grant No. DMR-1160966 and in part by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS.

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Authors and Affiliations

  1. Division of Materials Science and Engineering, Hanyang University, Seongdong-gu, Seoul, 133-791, South Korea

    Megumi Kawasaki

  2. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, California, 90089-1453, USA

    Megumi Kawasaki

  3. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, California, 90089-14533, USA

    Terence G. Langdon

  4. Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, SO17 1BJ, United Kingdom

    Terence G. Langdon

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  1. Megumi Kawasaki
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Correspondence to Megumi Kawasaki.

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Kawasaki, M., Langdon, T.G. The many facets of deformation mechanism mapping and the application to nanostructured materials. Journal of Materials Research 28, 1827–1834 (2013). https://doi.org/10.1557/jmr.2013.55

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