The press-forming object of a Magnesium alloy, a rolling board of a Magnesium alloy, a manufacturing method of a Magnesium alloy fabrication object, and a manufacturing method of a Magnesium alloy board

Japanese Patent JP6065346

B2

A formed product of a magnesium alloy having excellent impact resistance and a magnesium alloy sheet suitable as a material for the formed product are provided. The formed product is produced by press-forming a magnesium alloy sheet having an Al content of 7% by mass to 12% by mass and has a flat portion that is not subjected to drawing deformation. In a metal texture in a cross section of the flat portion in the thickness direction, the number of coarse intermetallic compound (Mg 17 Al 12 ) particles having a particle size of 5 µm or more present in a surface area region extending from a surface of the flat portion to a position one-third of the thickness from the surface in the thickness direction is five or less. The formed product has a texture in which the number of coarse precipitations d 1 is small and in which fine precipitations d 0 are dispersed. The formed product is less likely to be dented even when impacted because of dispersion strengthening owing to the fine precipitations and solid-solution strengthening owing to Al that sufficiently forms a solid solution.

Yukihiro Oishi
Nozomi Kawabe
Nobuyuki Okuda
Nobuyuki Mori
Masayoshi Numano
Koji Mori
Takahiko Kitamura
Ryuichi Inoue

JP2014216651A

January 25, 2017

October 23, 2014

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Sumitomo Electric Industries, Ltd.

C22C23/02; B21B3/00; C22F1/06

JP2008106337A

WO2006003899A1
WO2008029497A1

Hiroshi Yamano

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