Microstructural evolution in commercial purity aluminum during high-pressure torsion


Zhilyaev, A.P., Oh-ishi, K., Langdon, T.G. and McNelley, T.R. (2005) Microstructural evolution in commercial purity aluminum during high-pressure torsion. Materials Science and Engineering: A, 410-411, 277-280. (doi:10.1016/j.msea.2005.08.044).

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Description/Abstract

An investigation was conducted to evaluate the microstructural evolution occurring in disks of commercial purity aluminum processed by high-pressure torsion (HPT) under constrained conditions. Microhardness measurements were taken to assess the variation in hardness across the diameters of disks subjected to different imposed strains and the microstructures were observed at the edges and in the centers of the disks using transmission electron microscopy. The results show the microhardness is lower and there is less grain refinement in the central regions of the disks in the initial stages of torsional straining but the microstructures become reasonably homogeneous across the disks at high imposed strains.

Item Type: Article
Additional Information: The Langdon Symposium: Flow and forming of Crystalline Materials
ISSNs: 0921-5093 (print)
Related URLs:
Keywords: aluminum, high-pressure torsion (hpt), microstructure, ultrafine grains
Subjects: T Technology > TN Mining engineering. Metallurgy
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 23847
Date Deposited: 22 Mar 2006
Last Modified: 27 Mar 2014 18:13
Contact Email Address: apzhilya@nps.edu
URI: http://eprints.soton.ac.uk/id/eprint/23847

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