3D analysis of macrosegregation in twin-roll cast AA3003 alloy before and after heat treatment

Jan Bajer, Stefan Zaunschirm, Michaela Šlapáková, Mariia Zimina, Bernhard Plank, Miroslav Cieslar, Johann Kastner

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

Abstract

Twin-roll casting allows production of sheets and strips with required thickness without subsequent homogenization or hot rolling and therefore has a high potential for industrial applications. One of the drawbacks of this method is a formation of inhomogeneous structure with central segregation. Sheet prepared from 3003 aluminum alloy with 1 wt.% Mn, 0.2 wt.% Fe, 0.5 wt.% Si, 0.2 wt.% Cu and small addition of Zr (0.2 wt.%) and Cr (0.1 wt.%) was studied by X-ray computed tomography. Segregations in the material form as manganese, iron and silicon rich channels spread in the rolling direction. The material annealed at 450 °C exhibits diffusion of alloying elements from segregations into their surroundings and formation of voids or a material with lower density in the center of segregation channels due to Kirkendall effect.

Original languageEnglish
Title of host publicationMETAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings
PublisherTANGER Ltd.
Pages1351-1357
Number of pages7
ISBN (Electronic)9788087294840
Publication statusPublished - 2018
Event27th International Conference on Metallurgy and Materials, METAL 2018 - Brno, Czech Republic
Duration: 23 May 201825 May 2018

Publication series

NameMETAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings

Conference

Conference27th International Conference on Metallurgy and Materials, METAL 2018
CountryCzech Republic
CityBrno
Period23.05.201825.05.2018

Keywords

  • Al-Mn-Zr alloy
  • Central segregation
  • Kirkendall effect
  • Twin-roll casting
  • X-ray computed tomography

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