An analysis of microband orientation in hot deformed aluminium alloy AA5052 using forward and reverse torsion

Lopez-Pedrosa, M., Wynne, B.P., Rainforth, W.M. and Cizek, P. 2006, An analysis of microband orientation in hot deformed aluminium alloy AA5052 using forward and reverse torsion, Materials science forum, vol. 519, no. 521, pp. 877-882.


Title An analysis of microband orientation in hot deformed aluminium alloy AA5052 using forward and reverse torsion
Author(s) Lopez-Pedrosa, M.
Wynne, B.P.
Rainforth, W.M.
Cizek, P.
Journal name Materials science forum
Volume number 519
Issue number 521
Start page 877
End page 882
Publisher Trans Tech
Place of publication Stafa-Zurich, Switzerland
Publication date 2006
ISSN 0255-5476
Keyword(s) strain path
microbands
torsion
AA5052
EBSD
Summary The effects of strain path reversal on the macroscopic orientation of microbands in AA5052 have been studied using high resolution electron backscatter diffraction. Deformation was carried using two equal steps of forward/forward or forward/reverse torsion at a temperature of 300°C and strain rate of 1s-1 to a total equivalent tensile strain of 0.5. In both cases microbands were found in the majority of grains examined with many having more than one set. The microbands appear to cluster at specific angles to the macroscopic deformation. For the forward/forward condition microbands clustered around -20° and +45° to the maximum principle stress direction and at ± 30-35° to the principal strain direction. For the forward/reverse condition significantly more spread in microband angle was observed though peaks were visible at ±35° with respect to principal stress direction and at -40° and +30° with respect to the principal strain direction of the reverse torsion. This suggests the microbands formed in the forward deformation have or are dissolving and any new microbands formed are related to the deformation conditions of the final strain path.
Language eng
Field of Research 091207 Metals and Alloy Materials
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, Trans Tech Publications, Switzerland
Persistent URL http://hdl.handle.net/10536/DRO/DU:30025784

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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