| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnesium alloy sheet material with excellent corrosion resistance. <P>SOLUTION: The magnesium alloy sheet material comprises a magnesium alloy containing 7.3 mass%-16 mass% Al. When the Al content of the whole sheet material is x mass%, the area with the Al content of 0.8x mass%-1.2x mass% is 50 area% or more, the area with the Al content of 1.4x mass% or more is 17.5 area% or less and there is substantially no area with the Al content of 4.2 mass% or less. In the magnesium alloy sheet material, since the variation of Al concentration is low and there are few areas with extremely low Al content, the occurrence of localized corrosion and the progression of the corrosion are effectively prevented. Thus, the magnesium alloy sheet material has excellent corrosion resistance compared to a die cast material with the same overall Al content. <P>COPYRIGHT: (C)2012,JPO&INPIT |
