Pseudoelastic magnesium alloy, pseudoelastic magnesium alloy component, and production method thereof

Abstract

A pseudoelastic magnesium alloy contains magnesium as the main component thereof, and at least one element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein the pseudoelastic magnesium alloy has a unidirectional crystal structure.

What is claimed is: 
     
         1 . A pseudoelastic magnesium alloy comprising:
 magnesium as a main component of the pseudoelastic magnesium alloy; and   at least one element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein   the pseudoelastic magnesium alloy has a unidirectional crystal structure.   
     
     
         2 . The pseudoelastic magnesium alloy according to  claim 1 , wherein
 the unidirectional crystal structure is a single crystal.   
     
     
         3 . The pseudoelastic magnesium alloy according to  claim 1 , wherein
 the unidirectional crystal structure is a crystal texture.   
     
     
         4 . The pseudoelastic magnesium alloy according to  claim 1 , wherein
 the pseudoelastic magnesium alloy contains 1.0 to 6.0 atom % of Y, and a remainder is magnesium and unavoidable impurities.   
     
     
         5 . The pseudoelastic magnesium alloy according to  claim 1 , wherein
 a matrix of the pseudoelastic magnesium alloy contains 1.0 to 3.4 atom % of Y, and   a remainder is magnesium and unavoidable impurities.   
     
     
         6 . A pseudoelastic magnesium alloy component comprising
 the pseudoelastic magnesium alloy according to  claim 1 , wherein   a direction of applied compression stress to a finished component is a direction having an angle of 10° or less in a direction of a c-axis from a <10-10> direction of a hexagonal magnesium crystal constituting the pseudoelastic magnesium alloy.   
     
     
         7 . A production method of a pseudoelastic magnesium alloy component, comprising
 fabricating the pseudoelastic magnesium alloy according to  claim 1  such that a direction of applied compression stress to a finished component is a direction having an angle of 10° or less in a direction of a c-axis from a <10-10> direction of a hexagonal magnesium crystal constituting the pseudoelastic magnesium alloy.