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JIAO Shao-yang, WEI Ying-hui, HOU Li-feng, GUO Yao-wen, YU Bin, XU Bing-she. Analysis of the Formation of Light Spots on the Surface of Die-cast Magnesium Alloy Components[J]. Materials and Mechanical Engineering, 2007, 31(1): 67-69.
Citation: JIAO Shao-yang, WEI Ying-hui, HOU Li-feng, GUO Yao-wen, YU Bin, XU Bing-she. Analysis of the Formation of Light Spots on the Surface of Die-cast Magnesium Alloy Components[J]. Materials and Mechanical Engineering, 2007, 31(1): 67-69.
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Analysis of the Formation of Light Spots on the Surface of Die-cast Magnesium Alloy Components

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  • Received Date: March 31, 2006
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    • Abstract
  • After chemical conversion treatment of magnesium die-cast components,light spots often appear on their surfaces.The reason for such a problem was analyzed.It shows hot spots formed on the die surface during casting process decrease the solidification velocity of molten magnesium and big primary α phase is formed on the surface of casting.The different corrosion resistance of primary α phase and eutectic microstructure(α+β) makes the composion of chemical conversion coating different, so that the surface with primary α phase is discolored and light spots appear.
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    • References (7)
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