Abstract
Magnesium is a biocompatible and biodegradable metal, which has attracted much interest in biomedical engineering. Cast magnesium alloy shows the low strength and plasticity at ambient temperature. Microstructure, mechanical properties and degradation properties of the extrusion pressed magnesium alloy have been investigated for biomedical application in detail by optical microscopes, mechanical properties testing and corrosion testing. The magnesium alloy ingot were extrude into bar at the different extrusion ratio. Optical microscopy observation has indicated that the grain size of the extruding has been significantly decreased from extrusion rate is 25, which has mainly contributed to the high tensile strength and good elongation. Hot extruding has provided moderate corrosion resistance, which has opened a new window for materials design, especially for biomedical.
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