| 镁合金管材热挤压过程数值模拟研究 |
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| 作者姓名： | 陈增奎 周卫卫 范新中 |
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| 作者单位： | 中国运载火箭技术研究院;北京精密机电控制设备研究所 |
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| 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。
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| 关 键 词： | AZ31镁合金 挤压 数值模拟 温度-应力场 |
Study on Thermal Extrusion Simulation of Magnesium Alloy Tube |
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| Authors: | CHEN Zengkui ZHOU Weiwei and FAN Xinzhong |
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| Institution: | China Academy of Launch Vehicle Technology,Beijing Precision Electroechanical Control Equipment Research Instiute and China Academy of Launch Vehicle Technology |
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| 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. |
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| Keywords: | AZ31 magnesium alloy Extrusion Simulation Temperature & stress distribution |
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