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Influence of severe plastic deformation on PLC effect in Al 5XXX alloy
|Joanna Zdunek , Pawel Widlicki , Halina Garbacz , Jarosław Mizera , Krzysztof J. Kurzydlowski|
Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
In the present work, Al-Mg-Mn-Si alloy (5483) in as received state and after severe plastic deformation process was used. The plastic deformation was obtained by the hydroextrusion, so three different true strain values had been received correspondingly 1.39, 2.77 and 3.79. All specimens were subjected to the tensile tests with strain ratio 8,3*10-4 s-1. The investigated material revealed an instability of plastic deformation in the form of serration on stress-strain curves (so called Portevin- Le Chatelier effect). It is noticeable that the grain size reduction effects on the character of the instability.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium I, by Joanna Zdunek
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-04-27 14:31 Revised: 2009-06-07 00:44