AZ31与ME20M镁合金板料热拉深性能实验研究  

Deep Drawability of AZ31 and ME20M Magnesium Alloy Sheets at Elevated Temperature

作　　者：张庭芳[1] 黄菊花[1] 杨国泰[1] 邓敏[1] 董懿琼[1] 游步东[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330029

出　　处：《热加工工艺》2006年第21期5-8,共4页Hot Working Technology

基　　金：江西省教育厅科研项目（赣教技字[200653号]）

摘　　要：在不同成形温度、拉深速度、润滑条件下对1．2mm厚的AZ31镁合金板料与3mm厚的ME20M镁合金板料进行热拉深性能实验研究。实验表明：AZ31镁板的最佳成形温度为215℃，而ME20M镁板在250℃以上成形性能才随温度的升高明显改善，说明稀土元素对镁合金的室温拉深性能影响很小，但却显著提高镁合金的高温拉深性能，同时也说明镁合金板料具有较佳的轻薄结构成形性；两种镁合金板料热拉深成形性能都对拉深速度敏感．有润滑条件比无润滑条件成形性能要好。通过对成形件传力区部位金相实验分析得知，合理控制热拉深实验参数，能改善成形件微观组织，进而保证成形件质量。Hot deep drawing tests of AZ31 magnesium alloy sheet with a height of 1.2mm and ME20M magnesium alloy sheet with a height of 3mm were done at various temperatures,various deep drawing velocities and different lubricating conditions.The results indicate that the best forming temperature of AZ31 sheet is 215℃ ,but the forming capability of ME20M sheet becomes better with the rising temperature over 250℃ .The lanthanon element has a little influence on magnesium alloy＇s deep dra.wability at room temperature ,but the influence is large at high temperature. Magnesium alloy sheet has a good light-thin formability.The two magnesium alloy sheets＇ formability is sensitive to deep drawing velocity ,and the formability under lubricant condition is better than under no lubricant condition.The neasonable process parameters can improve microstructures of forming pieces to guarantee quality of forming pieces,

关 键 词：AZ31镁合金 ME20M镁合金 热拉深成形 极限拉深高度 

分 类 号：TG306[金属学及工艺—金属压力加工]