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Advances in Materials Science and Engineering
Volume 2015, Article ID 613839, 7 pages
http://dx.doi.org/10.1155/2015/613839
Research Article

Microstructure and Texture of Hydrostatic Extrusion Deformed Ni Single Crystals and Polycrystal

1Materials Science and Engineering Faculty, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland
2Institute of High Pressure Physics (Unipress), Polish Academy of Sciences, 01-142 Warsaw, Poland

Received 3 July 2015; Revised 18 August 2015; Accepted 23 August 2015

Academic Editor: Ying Li

Copyright © 2015 D. Jakubowska et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The differences in the microstructure and texture of two Ni single crystals, with different initial orientations ( and ), and of polycrystalline nickel, before and after severe plastic deformation (SPD) produced by hydrostatic extrusion (HE), have been investigated. The crystals were deformed by a two-step HE process with a total deformation value of . The global texture, mechanical properties, and microstructure were examined after the deformation. In every investigated sample, the presence of fibre texture was noted, while the starting orientation of a Ni single crystal was preserved in 50% of the volume. The results obtained were compared with the relevant literature data.