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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Cast Shop Technology: Recycling and Sustainability Joint Session
Presentation Title Tramp Element Accumulation and Its Effects on Secondary Phase Particles
Author(s) Robert Wagstaff, , Antoine Allanore
On-Site Speaker (Planned) Robert Wagstaff
Abstract Scope Increased demand for wrought aluminum products has put pressure on suppliers to increase the amount of recycled material used in the production stream. While this has financial and ecological benefits, even single-source scrap streams never exhibit the composition profile of the original product. This accumulation of so-called “tramp” elements such as iron, chromium, and vanadium can have an impact on the secondary phase inter-metallic particles formed during Direct-Chill (DC) casting. In order to better understand the influence of increased concentrations of certain tramp elements, an AA3104 ingot has been cast with an increased level of iron compared to the standard. The secondary phase particles have been analyzed as a function of position using a deep-etch technique and compared to grain size and macrosegregation profiles.
Proceedings Inclusion? Planned: Light Metals


Centrifugal Casting of Al-Si Scrap
Dross Formation Mechanisms of Thermally Pre-treated Used Beverage Can Scrap Bales with Different Density
Improved Recyclability of Cast Al-alloys by Engineering β-Al9Fe2Si2 Phase
Influence of Coating and De-coating on the Coalescence of Aluminium Drops in Salt
The Scale-up of High Shear Processing for the Purification of Recycled Molten Scrap Aluminium Alloy: Key Features of Fluid Flow
Tramp Element Accumulation and Its Effects on Secondary Phase Particles

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