Extrusion Process Optimization of Vanadium-bearing Aluminium Alloy for Mechanical Shell
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摘要: 采用不同的挤压速度和挤压温度对机械外壳用6061-0.8V新型含钒铝合金试样进行了挤压成型，并进行了力学性能的测试与分析。结果表明：随挤压速度由2 m/min提升至4.5 m/min，挤压温度由375℃升高到475℃，机械外壳用6061-0.8V新型含钒铝合金试样的抗拉、屈服强度先增大后减小，断后伸长率变化幅度较小，力学性能表现为先优化后下降。相比于2 m/min，3.5m/min速度挤压时的抗拉强度和屈服强度各增大了18、16 MPa；相比于375℃，425℃温度挤压时的抗拉强度和屈服强度各增大了20、24 MPa。机械外壳用6061-0.8V新型含钒铝合金挤压成型较佳的工艺参数选择为：挤压速度3.5 m/min、挤压温度425℃。Abstract: In this paper,new vanadium-bearing aluminum alloy 6061-0.8 V specimens for mechanical shell were extruded at different extrusion speeds and temperatures,and the mechanical properties were tested and analyzed.The results show that when extrusion speed is increased from 2 m/min to 4.5 m/min and the extrusion temperature is increased from 375℃ to 475℃,the tensile and yield strength of 6061-0.8 V alloy firstly increases and then decreases,and the change of total elongation is very small..When the extrusion speed is increased from 2 m/min to 4.5 m/min,the tensile strength and yield strength increase by 18 MPa and 16 MPa,respectively. When the extrusion temperature increases from 375℃ to 425℃,the tensile strength and yield strength of 425 increase by 20 MPa and 24 MPa respectively.The optimum extrusion parameters for 6061-0.8 V aluminum alloy for mechanical shell are extrusion speed of 3.5 m/min and extrusion temperature of 425℃.
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