High strength magnesium-based alloys

Details High strength magnesium-based alloys High strength magnesium-based alloys

C - Chemistry, Metallurgy

22

C

75/1.1

C22C 23/00 (2006.01) C22C 45/00 (2006.01)

Patent

CA 1334896

The present invention provides high strength magnesium-based alloys which are at least 50% by volume composed of an amorphous phase, the alloys having a composition represented by the general formula (I) MgaXb; (II) MgaXcMd, (III) MgaXcLne; or (IV) MgaXcMdLne (wherein X is one or more elements selected from the group consisting of Cu, Ni, Sn and Zn; M is one or more elements selected from the group consisting of Al, Si and Ca; Ln is one or more elements selected from the group consisting of Y, La, Ce, Nd and Sm or a misch metal rare earth elements; and a, b, c, d and e are atomic percentages falling within the following ranges: 40 ? a ? 90, 10 ? b ? 60, 4 ? c ? 35, 2 ? d ? 25, and 4 ? e ? 25. Since the magnesium-based alloys have high hardness, high strength and high corrosion- resistance, they are very useful in various applications. Further, since their alloys exhibit superplasticity near the crystallization temperature, they can be processed into various bulk materials, for example, by extrusion, press working or hot-forging at the temperatures of the crystallization temperature ? 100°C.

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