Optimizing the procedure for equal-channel angular pressing for maximum superplasticity


Komura, S., Furukawa, M., Horita, Z., Nemoto, M. and Langdon, T.G. (2001) Optimizing the procedure for equal-channel angular pressing for maximum superplasticity. Materials Science and Engineering: A, 297, (1-3), 111-118. (doi:10.1016/S0921-5093(00)01255-7).

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Description/Abstract

The imposition of severe plastic straining on an Al–3% Mg–0.2% Sc alloy through equal-channel angular pressing (ECAP) reduces the grain size to ca. 0.2 μm and provides an opportunity to achieve superplastic elongations at high strain rates. Experiments were conducted to evaluate the procedure for optimizing the ECAP process in order to attain maximum superplastic ductilities. The results show that: (i) high elongations are achieved only after each sample has been subjected to a sufficiently high strain to establish a homogeneous array of grains separated by high angle boundaries and (ii) elongations are a maximum when using processing route BC in which the sample is rotated by 90° in the same sense between each consecutive pressing through the ECAP die.

Item Type: Article
Related URLs:
Subjects: T Technology
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 23378
Date Deposited: 23 Mar 2006
Last Modified: 27 Mar 2014 18:12
URI: http://eprints.soton.ac.uk/id/eprint/23378

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