On the Investigation of the Portevin-Le Chatelier Effect in the Rolling of AA 5083

Abstract:

The aim of this paper is to investigate about the Portevin-Le Chatelier Effect (PLC) on a AA 5083 sheet. In order to study the minimizing of the PLC effect, three different rolling cyles have been carried out and an experimental campaign on the three different AA 5083 rolled has been carried out. In particular, the experimental campaign, to better understand the evolution of the phenomena during the rolling process, is based on: microstructural analysis, tensile tests and fractographic observations. Finally it has been found that the greater grain size the smaller the PLC effect, even if this effect cannot be totally removed, furthermore the PLC effect occurs only in the rolling direction. The best rolling cycle is the one that provide a hot rolling until 4mm, then a cold rolling up to 2mm and a final heat treatment of annealing.

• Periodical: Key Engineering Materials (Volume 710)
• Pages: 175-180
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.710.175
• Online since: September 2016
• Authors: Antonello Astarita*, Mariacira Liberini, Carla Velotti, Ciro Sinagra, Antonino Squillace
• Keywords: Rolling , Aluminium Alloys, Microstructure, Plastic Deformation, Portevin-Le Châtelier Effect

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