3003铝合金连续挤压管材的微观组织对其力学性能的影响  

Effect of microstructure on the mechanical properties of continuous extrusion of 3003 aluminium alloy tube

作　　者：陶莎[1] 王延辉[1] 闫志勇 

机构地区：[1]大连交通大学连续挤压教育部工程研究中心,辽宁大连116028 [2]大连康丰科技有限公司,辽宁大连116100

出　　处：《轻金属》2013年第1期73-78,共6页Light Metals

摘　　要：利用光学显微镜观察3003铝合金连续挤压管材的微观组织,用电子拉伸试验机进行拉伸试验,测试样品的力学性能。讨论不同条件下(即不同挤压温度和不同锰含量)获得的微观组织对力学性能的影响。结果表明,随挤压温度的降低,晶粒得到细化,抗拉强度和屈服强度提高,延伸率变化不明显;随锰含量的提高,第二相粒子在晶界处析出量增多,从而使抗拉强度和屈服强度提高,延伸率略有降低。3003 Al alloy tube with various microstructure have been obtained successfully under different extrusion conditions using continuous extrusion method.The microstructure of samples taken from 3003 Al alloy tube were observed by optical microscope.Mechanical properties of 3003 Al alloy with different microstructure were examined through tensile test at room temperature.Then,influence of the microstructure on the mechanical properties of 3003 Al alloy tube were discussed.In addition,starting material with different content of Mn in 3003 Al alloy effect on the mechanical property was also examined.The experimental results showed that tensile strength and yield strength improved significantly with decrease of extrusion temperatures.However,elongation was reduced slightly.It was found that the precipitation of second phase particles had great effect on improvement of the tensile properties in 3003 Al alloy.

关 键 词：3003铝合金 连续挤压 挤压温度 锰含量 微观组织 抗拉强度 屈服强度 延伸率 

分 类 号：TG379[金属学及工艺—金属压力加工]