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Chemical Thermodynamics and Reaction Kinetics of Bayer Process Desilication Read chapter Read first chapter

2024 | OriginalPaper | Chapter

Study of Vertical Fold Formation on Al–Mg Alloys During Direct Chill Casting

Authors : Marianthi Bouzouni, Theofani Tzevelekou, Spyridon Pinis, Sofia Papadopoulou, Andreas Mavroudis

Published in: Light Metals 2024

Publisher: Springer Nature Switzerland

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Abstract

The appearance of vertical folds (VF) is a known surface defect in direct chill (DC) aluminum casting of Al–Mg alloys, which affects both productivity and quality in the scalper and downstream rolling process, respectively. In this study, a series of industrial DC casting trials have been performed in terms of grain refiner additions and oxidation inhibitors with the objective to study their effect on VF formation. The number, length, and width of the VF on the surface of the produced ingots have been macroscopically recorded. In addition, the microstructure of corresponding as-cast samples has been examined by means of light optical microscopy (LOM) and scanning electron microscopy (SEM). Based on the results, a mechanism describing the contribution of oxidation and segregation phenomena on the formation of vertical folds is presented. Finally, the efficiency of employed measures to constrain vertical folds generation has been evaluated.

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Metadata
Title
Study of Vertical Fold Formation on Al–Mg Alloys During Direct Chill Casting
Authors
Marianthi Bouzouni
Theofani Tzevelekou
Spyridon Pinis
Sofia Papadopoulou
Andreas Mavroudis
Copyright Year
2024
Book
Light Metals 2024

Print ISBN: 978-3-031-50307-8

Electronic ISBN: 978-3-031-50308-5

Copyright Year: 2024

DOI
https://doi.org/10.1007/978-3-031-50308-5_137

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