材料工程Issue(5)：70-75,6.
工艺参数对AZ31镁合金往复挤压过程的影响
Influences of Processing Parameters on Reciprocating Extrusion Process of AZ31 Magnesium Alloy
摘要
Abstract
The rigid visco-plastic finite element method was used for the study on the coupling thermal-mechanical numerical simulation of reciprocating extrusion process of AZ31 magnesium alloy. The influence of initial temperature of blank, extrusion velocity and friction factor on the equivalent strain, equivalent stress and temperature field of reciprocating extrusion process was investigated. The results show that the extrusion velocity has little effect on the peak value of equivalent strain, with the increasing of the extrusion velocity, the peak value of temperature within the workpiece ascends linearly, the temperature distribution becomes more inhomogeneous, while the peak value of stress first increases and then decreases. With the increasing of initial blank temperature, the peak value of equivalent stress decreases linearly; and the friction factor has little effect on the peak value of temperature; with the increasing of friction factor, the peak value of equivalent strain first increases and then remains stable, and the peak value of equivalent stress increases with decreasing amplitude.关键词
往复挤压/工艺参数/AZ31镁合金/数值模拟Key words
reciprocating extrusion/processing parameter/AZ31 magnesium alloy/numerical simulation分类
矿业与冶金引用本文复制引用
刘君,郭学锋,张忠明,叶永南..工艺参数对AZ31镁合金往复挤压过程的影响[J].材料工程,2012,(5):70-75,6.基金项目
教育部博士点基金(20070700003) （20070700003）
河南省科技攻关项目(102102210031) （102102210031）
陕西省科技计划项目(2010K10-08) （2010K10-08）
河南省教育厅自然科学项目(2010A430008) （2010A430008）
