MAGNESIUM ALLOY MATERIAL

摘要

A magnesium alloy material with excellent corrosion resistance is provided. The magnesium alloy material comprises a magnesium alloy containing 7.3%-16 % by mass Al. When the Al content for the whole magnesium alloy material is x% by mass, the area with an Al content of 0.8x%-1.2x% by mass is 50% by area or more, the area with an Al content of 1.4x% by mass min. is 17.5% by area max., and there is substantially no area with an Al content of 4.2% by mass max. This magnesium alloy material can effectively prevent the occurrence of localized corrosion and the progression of said corrosion, as a result of the low variation in Al concentration and the lack of areas with extremely low Al content. Accordingly, the magnesium alloy material has excellent corrosion resistance compared to a die cast material with the same overall Al content. The magnesium alloy material can be used for plate material, coil material comprising rolled long plate material, and formed articles.