Mechanisms of grain refinement by intensive shearing of AZ91 alloy melt
نویسندگان
چکیده
منابع مشابه
Refining grain structure and porosity of an aluminium alloy with intensive melt shearing
Intensive melt shearing was achieved using a twin-screw machine to condition an aluminium alloy prior to solidification. The results show that intensive melt shearing has a significant grain-refining effect. In addition, the intensive melt shearing reduces both the volume fraction and the size of porosity. It can reduce the density index from 10.50% to 2.87% and the average size of porosity in ...
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Effects of different amounts of lead (Pb) and tin (Sn) on microstructure and tensile properties of the AZ91 alloy were studied. The results presented that the microstructure of AZ91 alloy is consisted the α-Mg phase and semi-continuous network of β-Mg17Al12 intermetallics. For the as-cast AZ91 alloy, the average grain siz and the β phase volume fraction were 96.2 µm and of 25.3%, respectively. ...
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ژورنال
عنوان ژورنال: Acta Materialia
سال: 2010
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2010.08.016