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Subject: Al-Mg-Sc filler wire - ingot casting
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Date: 07/19/02 at 10:22 AM
Posted by: Julian Bassett
E-mail: jcbassett@QinetiQ.com
Message Posted:
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I am intending to make Al-Mg-Sc filler wire, and will soon begin the first phase, i.e. casting ingots. However, my previous attempts to produce ingots resulted in a serious segregation of the Sc, being richer at the bottom and leaner at the top compared to tha aim composition. I had some ideas why this might have occurred (e.g. the casting temperature was too low, causing high melting point AlSc compounds to form and sink to the bottom), but can anyone else give me a more informed reason, and how do you overcome it? Any other pitfalls?
Nikolay - I might be able to help you if it works! Julian
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