AZ91D镁合金管材超塑胀形的数值模拟  

Numerical simulation of superplastic bulging of AZ91D magnesium alloy tube

作　　者：宋志真[1,2] 郭俊卿[1,2] 李学烤[1,2] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室

出　　处：《矿山机械》2009年第8期96-99,共4页Mining & Processing Equipment

摘　　要：采用WQ4100万能全息试验机对镁合金AZ91D进行拉伸试验,得到真实的应力-应变曲线。以此为基础,采用DYNAFORM软件对不同的内压和轴向压力的匹配关系对壁厚的影响进行数值模拟,发现在轴向压力为1～2MPa、内压为5～7MPa为最优加载路径,并通过试验验证了此工艺的正确性。The magnesium alloy of AZ9lD is carried out the tensile experiment nsing the WQ4100. Through the experiment, the curves of real stress and strain are achieved. Using D YNAFORM software, the simulation of relationships of the tube thickness and the different internal pressures and cvcial pressures are conducted. It is Jound that the optimum path is the axial pressure at 1 - 2 MPa and the internal pressure at ,5 - 7 MPa. The correctness of simulation analysis is verified by the process experiment.

关 键 词：AZ91D镁合金 拉伸试验 胀形 DYNAFORM 数值模拟 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG115.52[金属学及工艺—金属材料]