( 1. 哈尔滨理工大学 材料科学与工程学院，哈尔滨 150040;
2. 上海交通大学 轻合金精密成型国家工程中心， 上海 200030)
摘 要: 在不同温度、 不同压边力和不同拉深速度下， 针对厚度为0.8 mm的AZ31B镁合金板材的成形性能用有限元分析软件进行模拟与分析。 在25~220 ℃的温度范围内， 采用直径为140 mm的坯料进行冲压成形， 研究成形温度、 拉深速度以及压边力对AZ31B镁合金板成形性能的影响。 结果表明： 成形温度为200 ℃时的极限拉深比达到了2.8； 成形温度在200 ℃以下时， 随着成形温度的升高， 镁合金板材的成形性能越来越好， 这证明AZ31B镁合金具有良好的热拉深性能； 此外， 拉深速度和压边力对AZ31B镁合金的拉深成形也有重要影响。
关键字: AZ31B镁合金； 拉深成形； 成形温度； 拉深速度； 压边力； 极限拉深比
（ 1. School of Materials Science and Engineering,
Harbin University of Science and Technology, Harbin 150040, China;
2. Light Alloy Net Forming National Engineering Research Center,
Shanghai Jiao Tong University, Shanghai 200030, China）
Abstract: To investigate the formability, magnesium alloy AZ31B sheets with thickness of 0.8 mm were simulated and analyzed by the finite element analysis software under different temperatures, different blank holder forces and different deep drawing speeds. During the range of 25-220 ℃, the blank with diameter of 140 mm was used to proceed drawing to investigate the influences the forming temperature, deep drawing speed and blank holder force for the formability of magnesium alloy AZ31B sheets. The results show that: the limiting drawing ratio reaches 2.8 when the forming temperature is 200 ℃, and under 200 ℃, the higher the forming temperature is, the better of the formability for magnesium alloy sheets is. It is proved that magnesium alloy AZ31B has excellent thermal deep drawing formability. Furthermore the deep drawing speed and the blank holder force have important influences on the deep-drawing process of the magnesium alloy AZ31B sheets.
Key words: magnesium alloy AZ31B; deep drawing forming; forming temperature; deep drawing speed; blank holder force; limiting drawing ratio(LDR)
