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Title: Influence of phase composition on Portevin-Le Chatelier effect in Al-Mg alloys
Authors: Borisova, Yu.
Yuzbekova, D.
Mogucheva, A.
Keywords: technique
metal science
Al-Mg alloys
Portevin-Le Chatelier effect
plastic deformation
phase composition
Issue Date: 2019
Citation: Borisova, Yu. Influence of phase composition on Portevin-Le Chatelier effect in Al-Mg alloys / Yu. Borisova, D. Yuzbekova, A. Mogucheva // IOP Conference Series: Materials Science and Engineering. - 2019. - Vol.597.- Art. 012057.
Abstract: The temperature-strain rate domain of the Portevin-Le Chatelier (PLC) effect has been determined for three ultrafine grained aluminum alloys: Al-3Mg (А1), Al-4,57Mg0,35Mn-0,2Sc-0,09Zr (А2) and Al-5,4Mg-0,52Mn-0,1Zr (А3) (wt.%). The apparent activation energy of the serrated yielding was estimated. It was found that the presence of dispersed particles leads to a decrease in the activation energy and the temperature–strain rate domain of the PLC effect becomes narrower
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