Magnesium alloy

Abstract

The present invention relates to a magnesium alloy based on 100% by weight of the total magnesium alloy, Al: 0.03 to 16.0% by weight, Mn: 0.015 to 1.0% by weight, Sc: 0.02 to 0.5% by weight, lanthanide rare earth element (RE): 0.03 to 2.0% by weight, and the balance Mg and inevitable impurities, wherein, the rare earth element (RE) comprise La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or a combination thereof.

1 . A magnesium alloy comprising:
 based on 100% by weight of the total magnesium alloy, Al: 0.03 to 16.0% by weight, Mn: 0.015 to 1.0% by weight, Sc: 0.02 to 0.5% by weight, lanthanide rare earth element (RE): 0.03 to 2.0% by weight, and the balance Mg and inevitable impurities,   wherein, the rare earth element (RE) comprise La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or a combination thereof.   
     
     
         2 . The magnesium alloy of  claim 1 ,
 wherein, the rare earth element (RE) is comprised 0.1 to 1.0% by weight.   
     
     
         3 . The magnesium alloy of  claim 1 ,
 the magnesium alloy further comprises:   with respect to the total 100% by weight of the magnesium alloy, Zn: less than 5.0% by weight.   
     
     
         4 . The magnesium alloy of  claim 3 ,
 the magnesium alloy further comprises:   with respect to the total 100% by weight of the magnesium alloy, Zn: 0.1 to 4.5% by weight.   
     
     
         5 . The magnesium alloy of  claim 1 ,
 the magnesium alloy further comprises:   with respect to the total 100% by weight of the magnesium alloy, Ca: 2.0% by weight or less.   
     
     
         6 . The magnesium alloy of  claim 1 ,
 the magnesium alloy further comprises:   with respect to the total 100% by weight of the magnesium alloy, Y: 0.5% by weight or less.   
     
     
         7 . A magnesium alloy comprising:
 based on 100% by weight of the total magnesium alloy, 0.02 to 2% by weight of rare earth element (RE), the balance Mg and unavoidable impurities.   
     
     
         8 . The magnesium alloy of  claim 7 ,
 the rare earth element is Sc.   
     
     
         9 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy is a binary alloy consisting of Mg and Sc.   
     
     
         10 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy is ternary alloy comprising Mg—Sc—Mn, Mg—Sc—Ca, Mg—Sc—Y, Mg—Sc—Zn, or Mg—Sc—Sn.   
     
     
         11 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy comprises a secondary phase particle which is Sc—Si—Fe, Sc—Si, or a combination thereof.   
     
     
         12 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy comprises 0.05 to 0.1% by weight of Sc.   
     
     
         13 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy further comprises Mn: 2.8% by weight or less.   
     
     
         14 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy further comprises Ca: 0.1% by weight or less.   
     
     
         15 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy further comprises Y: 1% by weight or less.   
     
     
         16 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy further comprises Zn: 2% by weight or less.   
     
     
         17 . The magnesium alloy of  claim 7 ,
 wherein, the magnesium alloy further comprises Sn: 5% by weight or less.