An investigation of the deformation process during equal-channel angular pressing of an aluminum single crystal


Furukawa, Minoru, Kawasaki, Yoshiyasu, Miyahara, Yuichi, Horita, Zenji and Langdon, Terence G. (2005) An investigation of the deformation process during equal-channel angular pressing of an aluminum single crystal. Materials Science and Engineering: A, 410-411, 194-200. (doi:10.1016/j.msea.2005.08.082).

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Description/Abstract

This investigation examines the deformation process when an aluminum single crystal is subjected to equal-channel angular pressing (ECAP) using a die having a channel angle of 90°. The crystal within the entrance channel was oriented so that the {1 1 1} slip plane and the (1 1 0) slip direction were inclined at 20° in a counter-clockwise direction from the theoretical shear plane and the theoretical shear direction. The crystal was pressed through one pass at room temperature and then carefully examined. After passing through the shear plane, it is shown that the initial orientation remains in the upper portion of the specimen within the exit channel but there is a rotation by ~60° in a counter-clockwise direction near the lower die wall. These observations show that shear occurs in the upper portion of the specimen but there is a rotation in the lower portion due to the arc of curvature at the outer point of intersection of the two channels.

Item Type: Article
Additional Information: The Langdon Symposium: Flow and forming of Crystalline Materials
ISSNs: 0921-5093 (print)
Related URLs:
Keywords: aluminum single crystal, equal-channel angular pressing, deformation process, slip systems
Subjects: T Technology > T Technology (General)
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 23819
Date Deposited: 21 Mar 2006
Last Modified: 27 Mar 2014 18:13
Contact Email Address: furukawm@fukuoka-edu.ac.jp
URI: http://eprints.soton.ac.uk/id/eprint/23819

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