发明名称 |
MAGNESIUM ALLOY PLATE |
摘要 |
A magnesium alloy sheet having good press formability, a magnesium alloy structural member produced by pressing the sheet, and a method for producing a magnesium alloy sheet are provided. The magnesium alloy sheet is composed of a magnesium alloy containing Al and Mn. When a region from a surface of the alloy sheet to 30% of the thickness of the alloy sheet in a thickness direction of the magnesium alloy sheet is defined as a surface region and when a 200 µm 2 sub-region is arbitrarily selected from this surface region, the number precipitated impurity grains containing both Al and Mg and having a maximum diameter of 0.5 to 5 µm is 5 or less. When a 50 µm 2 sub-region is arbitrarily selected from the surface region, the number of crystallized impurity grains containing both Al and Mn and having a maximum diameter of 0.1 to 1 µm is 15 or less. In the grains of the crystallized phases, the mass ratio Al/Mn of Al to Mn is 2 to 5. The magnesium alloy sheet has good press formability since the crystallized phases and precipitates that cause breaking are small in amounts contained and in size. |
申请公布号 |
EP2453031(A1) |
申请公布日期 |
2012.05.16 |
申请号 |
EP20100796983 |
申请日期 |
2010.06.08 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
KITAMURA, TAKAHIKO;OISHI, YUKIHIRO;KAWABE, NOZOMU |
分类号 |
C22C23/02;C22C23/04;C22C23/06;C22F1/00;C22F1/06 |
主分类号 |
C22C23/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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