| 简介 |
Magnesium alloys which possess good processability and/or ductility whilst retaining good resistance to corrosion and/or degradation comprising Y : 0 - 10% by weight, Nd : 0 - 5% by weight, wherein the total of Y + Nd is at least 0.05% by weight, one or more heavy rare earths selected from Ho, Lu, Tm and Tb in a total amount of above 0.5% and no more than 5.5% by weight, Gd : 0 - 3.0% by weight, and Sm : 0 –0.2% by weight. The alloy optionally includes one or more of : Dy : 0 - 8% by weight; Zr : 0 -1.2% by weight; Al : 0 – 7.5% by weight; Zn and/or Mn : 0 - 2% by weight in total; Sc : 0 - 15% by weight; In : 0 - 15% by weight; Ca : 0 - 3% by weight; Er up to 5.5% by weight, provided that the total of Er, Ho, Lu, Tm and Tb is no more than 5.5% by weight; and one or more rare earths and heavy rare earths other than Y, Nd, Ho, Lu, Tm, Tb, Dy, Gd and Er in a total amount of up to 0.5% by weight; the balance being magnesium and incidental impurities up to a total of 0.3% by weight. |
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