| 摘要: |
| 为了得到综合力学性能良好的AZ31镁合金管材, 采用有限元软件DEFORM-3D对AZ31镁合金的挤压过程进行了模拟, 定性分析了AZ31坯料温度场的变化及等效应力的分布规律, 并计算了管材不同方向的最大拉应力曲线。结果表明热挤压的等效应力在模角拐弯处应力集中严重, 温度场分布接近终了时进入等温挤压阶段, 热挤压管材的横向裂纹产生的可能性较大, 分析结果为工艺实验提供了指导作用。 |
| 关键词: AZ31镁合金 挤压 数值模拟 温度-应力场 |
| DOI： |
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| 基金项目: |
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| Study on Thermal Extrusion Simulation of Magnesium Alloy Tube |
| CHEN Zengkui,ZHOU Weiwei,FAN Xinzhong |
| (China Academy of Launch Vehicle Technology;Beijing Precision Electroechanical Control Equipment Research Instiute) |
| Abstract: |
| In order to obtain AZ31 alloy tubes with good mechanical properties,this paper used DEFORM-3D to simulate temperature distribution, stress distribution of the thermal extrusion process, and the maximum tensile stress of different directions. Results show that concentrative stress is at the corner of die & isothermal temperature finally as isothermal extrusion, and the transverse crack of the thermal extrusion is most likely to arise. The results is instructional for production &experimentation of AZ31 alloy tubes. |
| Key words: AZ31 magnesium alloy Extrusion Simulation Temperature & stress distribution |