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

Published online by Cambridge University Press:  02 January 2015

Christine Tränkner ,
Aurimas Pukenas ,
Jelena Horky ,
Michael Zehetbauer  and
Werner Skrotzki
Christine Tränkner
Affiliation:
Institute of Structural Physics, Dresden University of Technology, D-01062 Dresden, Germany
Aurimas Pukenas
Affiliation:
Institute of Structural Physics, Dresden University of Technology, D-01062 Dresden, Germany
Jelena Horky
Affiliation:
Physics of Nanostructured Materials, Faculty of Physics, University of Vienna, A-1090 Vienna, Austria
Michael Zehetbauer
Affiliation:
Physics of Nanostructured Materials, Faculty of Physics, University of Vienna, A-1090 Vienna, Austria
Werner Skrotzki
Affiliation:
Institute of Structural Physics, Dresden University of Technology, D-01062 Dresden, Germany
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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.

Keywords

texturepolycrystalx-ray diffraction (XRD)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1760: Symposium YY – Advanced Structural and Functional Intermetallic-Based Alloys , 2015 , mrsf14-1760-yy02-06
Copyright
Copyright © Materials Research Society 2014 

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References

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