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Peculiarities in the Texture Formation of Intermetallic Compounds Deformed by High Pressure Torsion

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Abstract

NiAl, YCu and TiAl polycrystals with B2 and L10 structure, respectively, have been deformed by high pressure torsion (HPT) at temperatures between 20°C and 500°C at a hydrostatic pressure of 8 GPa to high shear strains. Local texture measurements were done by diffraction of high-energy synchrotron radiation and X-ray microdiffraction. In addition, the microstructure was analyzed by electron backscatter diffraction (EBSD). Besides typical shear components an oblique cube component is observed with quite large rotations about the transverse direction. Based on the temperature dependence of this component as well as on microstructure investigations it is concluded that it is formed by discontinuous dynamic recrystallization. The influence of high pressure on recrystallization of intermetallics at low temperatures is discussed.

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Acknowledgements

The help of T. Reiter with sample cutting is gratefully acknowledged. Beamtime at DESY was supported by Helmholtz-Zentrum Geesthacht (HZG). Part of this work was supported by the European Union and the Free State of Saxony within the framework of the “European Centre for Emerging materials and Processes (ECEMP), contract number 100111842.

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Authors and Affiliations

  1. Institute of Structural Physics, Dresden University of Technology, D-01062, Dresden, Germany

    Christine Tränkner, Aurimas Pukenas & Werner Skrotzki

  2. Physics of Nanostructured Materials, Faculty of Physics, University of Vienna, A-1090, Vienna, Austria

    Jelena Horky & Michael Zehetbauer

Authors
  1. Christine Tränkner
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  2. Aurimas Pukenas
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  3. Jelena Horky
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  4. Michael Zehetbauer
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  5. Werner Skrotzki
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Tränkner, C., Pukenas, A., Horky, J. et al. Peculiarities in the Texture Formation of Intermetallic Compounds Deformed by High Pressure Torsion. MRS Online Proceedings Library 1760, 43–48 (2014). https://doi.org/10.1557/opl.2014.963

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  • DOI: https://doi.org/10.1557/opl.2014.963

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