Magnesium alloy
AssigneeCast Centre Pty Ltd
InventorsColleen Joyce Bettles, Mark Antony Gibson
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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 aluminium, 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.
Claims19
A magnesium-based alloy consisting of, by weight:
- 1.5-4.0% rare earth element(s),
- 0.3-0.8% zinc,
- 0.02-0.1% aluminium,
- 4-25 ppm beryllium,
- 0-0.2% zirconium,
- 0-0.3% manganese,
- 0-0.5% yttrium,
- 0-0.1% calcium, and
- the remainder being magnesium except for incidental impurities.
An alloy as claimed in any one of the preceding claims having a zinc content of 0.4-0.7% by weight.
An alloy as claimed in any one of the preceding claims containing zirconium in an amount of 0.2% by weight or less.
An alloy as claimed in any one of the preceding claims containing yttrium in an amount of 0.5% by weight or less.
An alloy as claimed in any one of the preceding claims containing manganese in an amount of 0.3% by weight or less.
An alloy as claimed in any one of the preceding claims containing calcium in an amount of 0.1% by weight or less.
An alloy as claimed in any one of the preceding claims having an aluminium content of 0.03-0.09% by weight.
An alloy as claimed in any one of the preceding claims having an aluminium content of 0.04-0.08% by weight.
An alloy as claimed in any one of the preceding claims having an aluminium content of 0.05-0.07% by weight.
An alloy as claimed in any one of the preceding claims having a beryllium content of 4-15 ppm.
Dependencies are inferred from the claim text.