MAGNESIUM ALLOY MEMBER AND METHOD FOR MANUFACTURING SAME

Title:

MAGNESIUM ALLOY MEMBER AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2013/157376

Kind Code:

A1

Abstract:

Provided is a magnesium alloy member that satisfies elongation requirements and 0.2% proof stress at the same time so as to have excellent strength and workability while having further strength and compressive residual stress near the surface thereof and is suitable for use in a product that is primarily subject to bending stress and/or torsional stress. The member is made of a wire rod of magnesium alloy used in a member which is primarily subject to bending stress and/or torsional strength, has a portion where the maximum hardness near the surface is at least 170HV, has 0.2% proof stress of at least 550MPa and elongation of at least 5% within the wire rod, and has a maximum compressive residual stress near the surface of at least 50MPa.

Inventors:

ARAOKA YUJI (JP)
SHIRAISHI TOHRU (JP)
ONO YOSHIKI (JP)

Application Number:

PCT/JP2013/059684

Publication Date:

October 24, 2013

Filing Date:

March 29, 2013

Export Citation:

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Assignee:

NHK SPRING CO LTD (JP)

International Classes:

C22C23/00; B21C23/00; B22D11/00; B22D11/01; B22D11/06; B22D21/04; C22C1/02; C22F1/06

Domestic Patent References:

WO2007111342A1

2007-10-04

Foreign References:

JPH0570880A	1993-03-23
JPH06316740A	1994-11-15
JP2012087327A	2012-05-10
JPH0390530A	1991-04-16
JPH0310041A	1991-01-17
JP2003293069A	2003-10-15

Other References: