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Journal of Materials Science

, Volume 47, Issue 22, pp 7888–7893 | Cite as

Microstructure and microtexture evolution in pure metals after ultra-high straining

  • Alexander P. Zhilyaev
  • Terence G. Langdon
Ultrafine Grained Materials

Abstract

Ultrafine-grained, and even nanostructured materials can be manufactured by ultra-high straining by equal-channel angular pressing (ECAP), high-pressure torsion (HPT), by machining, and through combinations, such as machining of ECAP specimens, HPT plus ECAP, and HPT of machining chips. This report describes the results of investigations of the microstructure and microtexture of pure aluminium and copper subjected to different deformation processes to high imposed strains. The microstructures, dislocation densities, and microhardness developed during combinations of different strain paths were investigated and all characteristics were analyzed by X-ray, transmission and scanning electron microscopy, and by orientation imaging microscopy. The influence of different processing routes is examined in terms of the accumulated strain and microstructure refinement. A saturation in grain refinement is also considered with reference to the occurrence of recovery during ultra-high strain deformation.

Keywords

Pole Figure Equal Channel Angular Pressing Friction Stir Processing Inverse Pole Figure Orientation Imaging Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work was supported by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Materials Research Group, Faculty of Engineering and the EnvironmentUniversity of SouthamptonSouthamptonUK
  2. 2.Institute for Metals Superplasticity ProblemsRussian Academy of ScienceUfaRussia
  3. 3.Departments of Aerospace and Mechanical Engineering and Materials ScienceUniversity of Southern CaliforniaLos AngelesUSA

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