Alloy, alloy member, instrument, and method of manufacturing alloy

Abstract

An alloy contains Mg and Li, and the sum of the content of Mg and the content of Li is 90 mass % or more. The alloy has a content of Li in a range of higher than 11 mass % and 13.5 mass % or less and contains one or more elements selected from a first group consisting of Ge, Mn, and Si. The alloy has an α-phase at 25° C.

1 . An alloy comprising Mg and Li, where the sum of the content of Mg and the content of Li is 90 mass % or more, wherein
 the content of Li is in a range of higher than 11 mass % and 13.5 mass % or less,   the alloy contains one or more elements selected from a first group consisting of Ge, Mn, and Si,   the alloy has an α-phase at 25° C., and   proportion of the α-phase in the alloy at 25° C. is 8% or more.   
     
     
         2 . The alloy according to  claim 1 , wherein the content of Ge is 0.3 mass % or less. 
     
     
         3 . The alloy according to  claim 1 , wherein the content of Mn is 2 mass % or less. 
     
     
         4 . The alloy according to  claim 1 , wherein the content of Si is 0.5 mass % or less. 
     
     
         5 . The alloy according to  claim 1 , wherein proportion of the α-phase in the alloy at 25° C. is 20% or more. 
     
     
         6 . The alloy according to  claim 1 , wherein
 the alloy further contains one or more elements selected from a second group consisting of Al, Zn, Zr, Ca, and Be, and   the sum of contents of elements of the second group is 0.01 mass % or more and 7 mass % or less.   
     
     
         7 . The alloy according to  claim 6 , wherein
 the content of Al is 5 mass % or less,   the content of Zn is 2 mass % or less,   the content of Zr is 0.7 mass % or less,   the content of Ca is 0.3 mass % or less, and   the content of Be is 0.1 mass % or less.   
     
     
         8 . An alloy comprising Mg and Li, where the sum of the content of Mg and the content of Li is 90 mass % or more, wherein
 the content of Li in the alloy is in a range of 5.34 mass % or more and 11 mass % or less,   the alloy contains one or more elements selected from a first group consisting of Ge, Mn, and Si, and   the alloy satisfies y>0.3736x 2 −24.053x+217.79, where y (%) is proportion of an α-phase when temperature of the alloy is 25° C., and x (mass %) is the content of Li.   
     
     
         9 . The alloy according to  claim 8 , wherein the content of Ge is 0.3 mass % or less. 
     
     
         10 . The alloy according to  claim 8 , wherein the content of Mn is 2 mass % or less. 
     
     
         11 . The alloy according to  claim 8 , wherein the content of Si is 0.5 mass % or less. 
     
     
         12 . The alloy according to  claim 8 , further comprising one or more elements selected from a second group consisting of Al, Zn, Zr, Ca, and Be, wherein the sum of contents of elements of the second group is 0.01 mass % or more and 7 mass % or less. 
     
     
         13 . The alloy according to  claim 12 , wherein
 the content of Al is 5 mass % or less,   
       the content of Zn is 2 mass % or less, 
       the content of Zr is 0.7 mass % or less, 
       the content of Ca is 0.3 mass % or less, and 
       the content of Be is 0.1 mass % or less. 
     
     
         14 . An alloy member comprising:
 a base material; and   a coat provided on the base material, wherein   the base material includes the alloy according to  claim 1 .   
     
     
         15 . The alloy member according to  claim 14 , wherein the coat includes magnesium fluoride or magnesium phosphate. 
     
     
         16 . An instrument comprising:
 a housing; and   a component provided in the housing, wherein   the housing includes the alloy member according to  claim 14 .   
     
     
         17 . An alloy member comprising:
 a base material; and   a coat provided on the base material, wherein   the base material includes the alloy according to  claim 8 .   
     
     
         18 . The alloy member according to  claim 17 , wherein the coat includes magnesium fluoride or magnesium phosphate. 
     
     
         19 . An instrument comprising:
 a housing; and   a component provided in the housing, wherein   the housing includes the alloy member according to  claim 17 .