镁合金摩托车把超塑胀形的实验研究及数值模拟  

Experimental Study and Numerical Simulation of Magnesium Alloy Tube Used for Motor Bar

作　　者：李学烤[1] 陈拂晓[1] 杨永顺[1] 王建甫[1] 

机构地区：[1]河南科技大学材料学院锻压实验室,河南洛阳471003

出　　处：《热加工工艺》2008年第9期54-56,共3页Hot Working Technology

基　　金：洛阳市科技发展计划项目(0602018A-2)

摘　　要：镁合金AZ31B在415℃、应变速率1×10-3s-1条件下具有良好的超塑性,其伸长率可达380%,且流动应力不到60MPa。在这种超塑状态下研究了镁合金摩托车把的胀形工艺,并通过DYNAFORM对不同的内压与轴向进给的匹配关系进行模拟,得出最优加载路径,很好的符合了实验研究的结果,为该工艺面向生产提供了一定的依据。The magnesium alloy AZ31B has excellent superplasticity, its extensibility is up to 380%, and the flow stress is lower than 60 MPa at temperature of 415 ℃ and swain rate of 1×10^-3 s^-1. The bulging forming process of magnesium alloy tube was studied, and the different matching relationships between internal pressure and axial compressive load were simulated by DYNAFORM under the condition of superplasticity, the opfimizational loading route was gained. The result of simulation was in accordance with the that of experiment. It gives some relative knowledge for the application of this process.

关 键 词：超塑性 胀形工艺 摩托车把 DYNAFORM 

分 类 号：TG376.2[金属学及工艺—金属压力加工]