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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium The Science of Melt Refining: An LMD Symposium in Honor of Christian Simensen and Thorvald Abel Engh
Presentation Title Oxide Skin Strength on Molten AA5XXX Aluminum Alloy – Effect of Beryllium and Alternatives
Author(s) Martin Syvertsen
On-Site Speaker (Planned) Martin Syvertsen
Abstract Scope Aluminium alloys AA5XXX containing 4 - 5% magnesium is frequently used for marine applications due to its corrosion resistance in seawater. However, with the this amount of magnesium, the molten metal surface is much more likely to oxidize so the cast ingots may get a rough and uneven surface with a thick segregation layer. By adding a few parts per million of beryllium the surface properties are changed and better surface quality is obtained on the ingots. Previous oxide skin strength measurements have shown large impact of trace elements. In this paper, measurements of oxide skin strength with various Be/Mg-ratios are presented.
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Holistic Approach to Molten Metal Cleanliness
Developments in Inclusion Removal Technology
Effects of 2 ppm Beryllium on the Oxidation of a 5XXX Aluminum Alloy at Temperatures between 500 C and 750 C
Modelling of Hydrogen Removal in Gas Fluxing of Molten Aluminium
Overview of Ultrasonic Degassing Development
Oxide Skin Strength on Molten AA5XXX Aluminum Alloy – Effect of Beryllium and Alternatives
Results of Trials with a Multi Stage Filtration System Employing a Cyclone
The Contributions of Thorvald Engh and Christian Simensen to the Science of Melt Refining
The Fundamentals of Forming Microbubbles in Liquid Metal Systems
The Use of Nitrogen to Degas Molten Aluminium - Comparison of Metallurgical Results with Argon and Nitrogen Used in an ACD™
Understanding of Interactions between Pyrolysis Gases and Liquid Aluminum and Their Impact on Dross Formation

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