Abstract
This paper includes the results of high-temperature rheological experiments on semi-solid magnesium alloys and the verification of different models describing the rheological behaviour of semi-solid magnesium alloys. Such information is key from the point of view of designing alloy forming processes in their semi-solid states. Magnesium alloys are a very attractive material, due to their light weight and good plastic properties; on the other hand, this material is very reactive in a liquid (semi-solid) state, which is challenging from a testing and forming perspective. Formulating/finding models for an accurate description of the rheological behaviour of semi-solid magnesium alloys seems to be key from the standpoint of developing and optimising forming processes for semi-solid magnesium alloys.
Highlights
Magnesium alloys are currently growing in importance as materials for parts used in the automotive industry
With its specific gravity of 1.8 g/cm3, is the lightest structural material. It is over four times lighter than steel and 1.5 times lighter than aluminium; at the same time it maintains very good mechanical properties, including ductility, which can be modified by the addition of appropriate alloying elements
Magnesium ranks eighth as the most frequently-occurring element in the lithosphere
Summary
Magnesium alloys are currently growing in importance as materials for parts used in the automotive industry. With its specific gravity of 1.8 g/cm , is the lightest structural material. It is over four times lighter than steel and 1.5 times lighter than aluminium; at the same time it maintains very good mechanical properties, including ductility, which can be modified by the addition of appropriate alloying elements. Magnesium ranks eighth as the most frequently-occurring element in the lithosphere. It is produced from seawater, brines or magnesium rock and, its resources are enormous. Annual magnesium output is estimated at about 500,000 tonnes p.a
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