Preparation Methods of Metallographic Specimens of Magnesium Alloy AZ80 in Different Microstructure State

The hardness of magnesium alloy is low and easy to oxidate,it is seriously affected to prepare and observe the metallographic specimens,which limits the further study and use.In order to improve the metallographic observation quality of magnesium alloy,through optimization and refinement of metallographic preparation technique of magnesium alloy AZ80,the metallographic specimen preparation process was detail expounded including sample preparation,grinding,mechanical polishing and electrolytic polishing.And according to the characteristics of magnesium alloy in different microstructure state,the electrolytic polishing process and specimen preparation technique were respectively given to improve the quality of metallographic observation for magnesium alloy AZ80 in as-cast,solid solution and aging states corresponding.