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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Cast Shop Technology
Presentation Title NOW ON-DEMAND ONLY - Effects of Casting Temperature and Iron Content on the Microstructure of Hypoeutectic A380 Aluminum Alloy
Author(s) Reza Haghayeghi, Giulia Scampone, Özen Gürsoy, Giulio Timelli
On-Site Speaker (Planned) Özen Gürsoy
Abstract Scope Casting temperature and iron content are among the most important factors in obtaining superior mechanical properties in hypoeutectic Al-Si alloys. An A380 aluminum alloy that is one of the most spread alloys in HPDC was selected for examining different iron contents and casting temperatures. The alloy with contents of about 0.8 and 1.2 wt.% Fe was cast at different temperatures in the range between 680°C and 1030°C. The outcome indicates that dendrite arm spacing does not change significantly at different temperatures or iron contents. From 820°C in low-Fe containing alloy and from 890°C in high-Fe containing alloy, the precipitation of harmful β-phase is suppressed. Moreover, blocky or Chinese script α-Fe compounds become the dominant phase throughout the microstructure. The results suggest A380 with lower Fe content at casting superheat of 100°C superheat would result in uniform microstructure and removal of detrimental β-phase.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Characterization, Process Technology


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