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US 7,682,470 B2Granted
Magnesium alloy
AssigneeCast Centre Pty Ltd
InventorsColleen Joyce Bettles, Mark Antony Gibson
Life of this patent
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Abstract
A magnesium-based alloy consists of 1.5-4.0% by weight rare earth element(s), 0.3-0.8% by weight zinc, 0.02-0.1% by weight aluminum, and 4-25 ppm beryllium. The alloy optionally contains up to 0.2% by weight zirconium, 0.3% by weight manganese, 0.5% by weight yttrium and 0.1% by weight calcium. The remainder of the alloy is magnesium except for incidental impurities.
Claims9
A magnesium-based alloy consisting of 1.7-2.1% by weight neodymium, 0.5-0.7% by weight cerium, 0.3-0.5% by weight lanthanum, 0.03-0.09% by weight aluminium, 0.3-0.8% by weight zinc, 4-15 ppm beryllium;
- the remainder being magnesium except for incidental impurities and, optionally, trace amounts of rare earth elements other than neodymium, cerium and lanthanum.
Dependencies are inferred from the claim text.