ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The effect of fine, non-shearable, dispersoids on the grain refinement of aluminiumalloys, severely deformed by ECAE, has been studied using a model Al-0.2%Sc alloy, duringdeformation by Routes A and BC (+90degrees rotation) using a 120°, or 90°, die. Themicrostructure in the dispersoid-containing alloy was compared to a single-phase alloy using highresolution EBSD analysis. With Route A the presence of fine dispersoids was found tosignificantly retard the development of new high-angle grain boundaries and the formation of a finegrain structure, by homogenising slip and inhibiting microshear bands. This difference was greatlyenhanced, using Route BC. Similar results were obtained with the two die angles, but with Route Arefinement tended to be slightly less effective when using the 90° die
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.114.151.pdf
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