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

2024 | OriginalPaper | Chapter

Influence of Chemistry and Direct Chill (DC) Casting Parameters on the Formation of Altenpohl Zone in 5xxx Alloys

Authors : Akash Pakanati, Snorre Rist, Thomas Hartmut Ludwig, Eystein Vada, Shiva Talatori, Jan-Erik Ødegård

Published in: Light Metals 2024

Publisher: Springer Nature Switzerland

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Abstract

Anodization of 1xxx and 5xxx aluminium alloy sheets improves the corrosion resistance, in addition to providing a bright and shiny appearance. These properties find application in a variety of building exterior and decorative purposes. However, Altenpohl zones are a typical defect observed in some of the 1xxx and 5xxx series aluminium alloys depending on their Fe-to-Si ratio. This defect is a consequence of different iron bearing particles responding differently to etching during the anodizing process. Considerable research has been conducted to study Altenpohl zone formation in 1xxx and 5xxx alloys. This paper aims to improve and extend the knowledge base where the influence of alloy chemistry, casting speed, and casting temperature on the formation and extent of Altenpohl zones in a commercially available 5005 alloy has been studied. Based on the results, recommendations on chemistry and process parameters are provided to control Altenpohl zone formation during DC casting of rolling slabs.

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previous chapter Measurement of the Heat Transfer in the Primary Cooling Area of a Laboratory Direct Chill Casting Plant for Alloy Design
next chapter Mechanisms of Twin-Roll Caster Tips Degradation
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Metadata
Title
Influence of Chemistry and Direct Chill (DC) Casting Parameters on the Formation of Altenpohl Zone in 5xxx Alloys
Authors
Akash Pakanati
Snorre Rist
Thomas Hartmut Ludwig
Eystein Vada
Shiva Talatori
Jan-Erik Ødegård
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_134

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