3D analysis of macresegregation in twin-roll cast AA3003 alloy before an 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 contribution

Abstract

Twin-roll casting (TRC) 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. TRC prepared from 3003 aluminum alloy with 1 % Mn, 0.2 % Fe, 0.5 % Si, 0.2 % Cu and small addition of Zr (0.2 %) and Cr (0.1 %) was studied by X-ray computed tomography. Segregations in the material form as manganese, iron and silicon rich channels spread in rolling direction. Material annealed at 450°C exhibits diffusion of alloying elements from segregations into their surroundings and formation of voids or material with lower density in the center of segregation channels due to Kirkendall effect.
Original languageEnglish
Title of host publicationProceedings of the 27th International Conference on Metallurgy and Materials
Pages1351-1357
Publication statusPublished - 2018
Event27th International Conference on Metallurgy and Materials (METAL 2018) - Brno, Czech Republic
Duration: 23 May 201825 May 2018

Conference

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

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