Magnesium alloy member and method for producing same

Abstract

The method of producing a magnesium alloy joined part has the following steps: a joining step of joining a reinforcing material made of metal to a plate material made of magnesium alloy without allowing an organic material to remain at the joined portion and a plastic-working step of performing plastic working on the plate material to which the reinforcing material is joined. A desirable means of joining the reinforcing material to the plate material can be to use an inorganic adhesive. Because the magnesium alloy joined part is formed by a structure in which the reinforcing material is joined to the plate material, in comparison with the case where the reinforcing material is formed by machining or the like, the magnesium alloy structural member can be obtained with high production efficiency.

1 . A method of producing a magnesium alloy joined part, the method comprising:
 (a) a joining step of joining at least one member selected from the group consisting of a reinforcing material, a boss, and a pin, all made of metal, to a rolled plate made of magnesium alloy without allowing an organic material to remain at the joined portion; and   (b) a plastic-working step of performing plastic working on the rolled plate having undergone the joining step;   wherein the joining is performed by forming a joining layer composed of an inorganic adhesive composed mainly of aluminum oxide.   
     
     
         2 . The method of producing a magnesium alloy joined part as defined by  claim 1 , wherein the rolled plate contains Al at a content of 1.0 mass % or more and 11 mass % or less. 
     
     
         3 . The method of producing a magnesium alloy joined part as defined by  claim 1 , wherein the difference in thermal expansion coefficient between the reinforcing material and the rolled plate is 10×10 −6 /K or less. 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . The method of producing a magnesium alloy joined art as defined by  claim 1 , wherein the joining step includes the performing of heat treatment in which the joined portion is heated at 80° C. or more and 350° C. or less. 
     
     
         8 . A magnesium alloy joined part, being obtained through the method as defined by  claim 1 . 
     
     
         9 . A magnesium alloy joined part, being obtained through the method as defined by  claim 2 . 
     
     
         10 . A magnesium alloy joined part, being obtained through the method as defined by  claim 3 . 
     
     
         11 . A magnesium alloy joined part, being obtained through the method as defined by  claim 7 .