US2008175744A1PendingUtilityA1

Magnesium alloys

42
Assignee: MOTEGI TETSUICHIPriority: Apr 17, 2006Filed: Apr 16, 2007Published: Jul 24, 2008
Est. expiryApr 17, 2026(expired)· nominal 20-yr term from priority
Inventors:Tetsuichi MotegiYosuke TamuraYukio Sanpei
C22C 23/02
42
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Claims

Abstract

A casting heat-resistance Mg alloy improved in heat resistance without relying upon expensive RE contains Cu. More specifically, it contains Al (8.0 weight %), Cu (1.0-5.0 weight %), Zn (2.0 weight %), Be (0.01 weight %) and Mg (the rest). The alloy can be prevented from deteriorating in corrosion resistance by adjusting the added amount of Cu to 1.0-1.5 weight %. The corrosion resistance of the alloy can be improved more by adding 0.5 to 1.0 weight % Mn as well.

Claims

exact text as granted — not AI-modified
1 . A casting Mg alloy comprising:
 a Mg—Al based alloy containing approximately 5.0 through 9.0 weight % Al; and   Cu added to the Mg—Al based alloy.   
     
     
         2 . The casting Mg alloy according to  claim 1  wherein the Mg—Al based alloy contains approximately 8.0 weight % Al. 
     
     
         3 . The casting Mg alloy according to  claim 1  wherein the added amount of Cu is approximately 1.0 through 5.0 weight %. 
     
     
         4 . The casting Mg alloy according to  claim 1  wherein the added amount of Cu is approximately 1.0 through 1.5 weight %. 
     
     
         5 . The casting Mg alloy according to  claim 4  wherein Mn is added. 
     
     
         6 . The casting Mg alloy according to  claim 5  wherein the added amount of Mn is approximately 0.5 through 1.0 weight %. 
     
     
         7 . A casting Mg alloy comprising:
 a Mg—Al based alloy; and   approximately 1.0 through 1.5 weight % Cu, approximately 2.0 weight % Zn and approximately 0.01 weight % Be that are added to the Mg—Al based alloy.   
     
     
         8 . The casting Mg alloy according to  claim 7  wherein the Mg—Al alloy contains approximately 5.0 through 9.0 weight % Al. 
     
     
         9 . The casting Mg alloy according to  claim 7  wherein the Mg—Al alloy contains approximately 8.0 weight % Al. 
     
     
         10 . A casting Mg alloy comprising:
 a Mg—Al based alloy; and   approximately 1.0 through 1.5 weight % Cu, approximately 2.0 weight % Zn, approximately 0.01 weight % Be and approximately 0.25 through 1.0 weight % Mn that are added to the Mg—Al based alloy.   
     
     
         11 . The casting Mg alloy according to  claim 10  wherein the Mg—Al alloy contains approximately 5.0 through 9.0 weight % Al. 
     
     
         12 . The casting Mg alloy according to  claim 10  wherein the Mg—Al alloy contains approximately 8.0 weight % Al. 
     
     
         13 . The casting Mg alloy according to  claim 2  wherein the added amount of Cu is approximately 1.0 through 5.0 weight %. 
     
     
         14 . The casting Mg alloy according to  claim 2  wherein the added amount of Cu is approximately 1.0 through 1.5 weight %.

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