Ti PARTICLE-DISPERSED MAGNESIUM-BASED COMPOSITE MATERIAL, AND MANUFACTURING METHOD THEREOF

Abstract

A Ti particle-dispersed magnesium-based composite material is a material having titanium particles uniformly dispersed in a magnesium matrix, and is characterized by having a titanium-aluminum compound layer at an interface between the magnesium alloy matrix and the titanium particles dispersed in the magnesium alloy matrix.

1 - 12 . (canceled) 
     
     
         13 . A Ti particle-dispersed magnesium-based composite material, characterized in that
 pure titanium particles are uniformly dispersed in a magnesium alloy matrix containing aluminum, and a titanium-aluminum compound layer is formed at an interface between the dispersed pure titanium particles and the magnesium alloy matrix by using a diffusion phenomenon of aluminum components in the magnesium alloy matrix.   
     
     
         14 . A method for manufacturing a Ti particle-dispersed magnesium-based composite material, comprising the steps of:
 placing pure titanium particles into a molten material containing magnesium and aluminum;   stirring the molten material for at least 30 minutes so as to uniformly disperse the pure titanium particles therein and to cause a diffusion reaction of the molten aluminum components and the pure titanium particles to proceed; and   producing a composite material by solidifying the molten material, the composite material having a titanium-aluminum compound layer formed at an interface between a magnesium alloy matrix containing aluminum and the pure titanium particles dispersed in the matrix.   
     
     
         15 . The method according to  claim 14 , wherein
 the step of producing the composite material includes solidifying the molten material to produce a cast material having the titanium-aluminum compound layer formed at the interface between the magnesium alloy matrix and the pure titanium particles dispersed in the matrix, and subjecting the cast material to a hot plastic working process.   
     
     
         16 . The method according to  claim 14 , wherein
 the step of producing the composite material includes solidifying the molten material to produce a cast material having the titanium-aluminum compound layer formed at the interface between the magnesium alloy matrix and the pure titanium particles dispersed in the matrix, and machining the cast material so as to make the cast material into powder.   
     
     
         17 . The method according to  claim 14 , wherein
 the step of producing the composite material includes solidifying the molten material into powder by using an atomization process.   
     
     
         18 . A method for manufacturing a Ti particle-dispersed magnesium-based composite material, comprising the steps of:
 mixing magnesium alloy powder containing aluminum with pure titanium particles; and   sintering and solidifying the mixed powder while holding the mixed powder at a temperature higher than a liquid phase transition temperature of the magnesium alloy powder, thereby forming a titanium-aluminum compound layer at an interface between the pure titanium particles and a magnesium alloy matrix, by using a diffusion phenomenon of aluminum components in the magnesium alloy powder.   
     
     
         19 . The method according to  claim 18 , further comprising the step of subjecting the sintered body to a hot plastic working process.