METHOD OF MANUFACTURING MAGNESIUM ALLOY FORGING MEMBER

Title:

METHOD OF MANUFACTURING MAGNESIUM ALLOY FORGING MEMBER

Document Type and Number:

Japanese Patent JP2010149136

Kind Code:

A

Abstract:

To provide a method of manufacturing a magnesium alloy forging member capable of exhibiting a uniformed strength over a whole forging member including a portion to be dead metal by a normal forging method.

The forging member 1 is manufactured by forging a magnesium alloy material 12 containing an intermetallic compound indicating a long period structure. The portion 5 to be the dead metal is preliminarily specified, the magnesium alloy material 12 is stored in a closed mold 11 and forged, preliminary forming for introducing equivalent strain of 1.0 or higher to the portion 5 to be the dead metal is carried out, and the forging member 1 is obtained by forging the preliminarily formed magnesium alloy member 18. The magnesium alloy material 12 comprises magnesium alloy containing Mg, Zn, and Y. The intermetallic compound indicating the long period structure has Mg12ZnY phase. In the preliminary forming, a protrusion 16 formed at a press punch 17 is pressure-welded to the portion 5 to be the dead metal. The size of the protrusion 16 is determined based on a strength-strain curve preliminarily obtained about the magnesium alloy material 12.

Inventors:

NAKAMURA TAKEYOSHI
KANBARA KAZUO
YOSHIDA YOSHIAKI

Application Number:

JP2008328556A

Publication Date:

July 08, 2010

Filing Date:

December 24, 2008

Export Citation:

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Assignee:

HONDA MOTOR CO LTD
MIYAMOTO KOGYO KK

International Classes:

B21J1/04; B21J5/00; C22C23/06; C22F1/06; F02F3/00; C22F1/00

Attorney, Agent or Firm:

Creation International Patent Office

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