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Deformation processing of massive nanostructured materials

  • Gerhard Wilde , Guru Prasad Dinda and Harald Rösner
Published/Copyright: May 23, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 98 Issue 4

Abstract

Deformation processing of initially polycrystalline material can lead to ultrafine-grained or even to nanocrystalline material, depending on the applied deformation route. In addition to different grain sizes, materials processed by different deformation methods also display different thermal stabilities. In order to analyze the impact of defects – particularly dislocations – near the grain boundaries, pure Pd and pure Ni have been processed sequentially by different methods. Transmission electron microscopy investigations at high resolution were conducted to characterize the microstructures of the materials. In addition, geometrical phase analysis was used to locate defects and visualize their strain fields. The results indicate that the presence of a high dislocation density at the grain boundaries increases the stability of the nanocrystalline structure against coarsening.

Keywords: Nanocrystal; Severe plastic deformation; Nanostructured material; Geometrical phase analysis; Thermal stability
* Correspondence address, Prof. Dr. Gerhard Wilde, University of Münster, Institute of Materials Physics, Wilhelm-Klemm-Str. 10, D-48149 Münster, Germany, Tel.: +49 0251 83 3571, Fax: +49 0251 83 38346, E-mail:

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Received: 2006-9-22
Accepted: 2007-2-9
Published Online: 2013-05-23
Published in Print: 2007-04-01

© 2007, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Ultrafine-grained materials: a personal perspective
  7. Retained coarse grains in bulk nanocrystalline Ni3Al
  8. The effect of grain size on strain rate sensitivity and activation volume – from nano to ufg nickel
  9. Thermal stability of ECAP processed pure Cu and CuZr
  10. Grain refinement and texture formation in torsion deformed NiAl
  11. Shear deformation of submicron-structured materials
  12. Non-microscopical methods for characterization of microstructures and properties of UFG metals
  13. Applied
  14. Deformation processing of massive nanostructured materials
  15. Effect of Nb–V addition on the mechanical behaviour and structural stability of ultrafine grained steels
  16. New trends in superplasticity in SPD-processed nanostructured materials
  17. Deformation behaviour, microstructure and processing of accumulative roll bonded aluminium alloy AA6016
  18. The influence of post-ECAP annealing on the properties of ultrafine-grained 5005 aluminum alloy sheet
  19. Enhancement in mechanical behavior and wear resistance of severe plastically deformed two-phase Zn–Al alloys
  20. Mechanical behavior of nanostructured metals and alloys in the 300–4.2 K temperature interval
  21. Notifications
  22. DGM News
https://doi.org/10.3139/146.101474
Keywords for this article
Nanocrystal; Severe plastic deformation; Nanostructured material; Geometrical phase analysis; Thermal stability

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Ultrafine-grained materials: a personal perspective
  7. Retained coarse grains in bulk nanocrystalline Ni3Al
  8. The effect of grain size on strain rate sensitivity and activation volume – from nano to ufg nickel
  9. Thermal stability of ECAP processed pure Cu and CuZr
  10. Grain refinement and texture formation in torsion deformed NiAl
  11. Shear deformation of submicron-structured materials
  12. Non-microscopical methods for characterization of microstructures and properties of UFG metals
  13. Applied
  14. Deformation processing of massive nanostructured materials
  15. Effect of Nb–V addition on the mechanical behaviour and structural stability of ultrafine grained steels
  16. New trends in superplasticity in SPD-processed nanostructured materials
  17. Deformation behaviour, microstructure and processing of accumulative roll bonded aluminium alloy AA6016
  18. The influence of post-ECAP annealing on the properties of ultrafine-grained 5005 aluminum alloy sheet
  19. Enhancement in mechanical behavior and wear resistance of severe plastically deformed two-phase Zn–Al alloys
  20. Mechanical behavior of nanostructured metals and alloys in the 300–4.2 K temperature interval
  21. Notifications
  22. DGM News
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