Affiliation:
1. BCAST, Brunel University
Abstract
Melt Conditioned Direct Chill (MC-DC) casting is a new development for producing
high-quality billets and slabs. In the MC-DC process, liquid metal is continuously fed into a
MCAST (melt conditioning by advanced shear technology) machine, where the liquid metal is
subjected to high shear rate and high degree of turbulence provided by a twin screw mechanism at
temperatures either above or below the alloy liquidus, and the conditioned liquid metal is then fed
continuously into a Direct Chill (DC) caster to produce billets or slabs. The MC-DC process is
applicable to both Al- and Mg-alloys. In this paper we present our experimental investigations of the
effects of processing parameters on the microstructural and compositional uniformity of 5xxx and
7xxx series Al-alloys. It has been confirmed by our experiments that the MC-DC process can
produce billets and slabs with fine and uniform microstructure, uniform chemical compositions and
much reduced cast defects, such as porosity and cracks.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Cited by
16 articles.
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