摘要
采用扫描电镜(SEM)、电子背散射衍射(EBSD)、硬度测试等手段与方法,研究了10~90 mm/min不同挤压速度对Al-Zn-Mg-Cu合金微观组织及硬度的影响规律。结果表明:随着挤压速度的增加,Al-Zn-Mg-Cu合金平均晶粒尺寸先减小后增大,挤压速度为50 mm/min的试验合金平均晶粒尺寸最小,为5.1μm。随着挤压速度的增加,试验合金硬度先升高后降低,挤压速度为50 mm/min时,试验合金硬度达到最大值。50 mm/min为试验Al-Zn-Mg-Cu合金的最佳挤压速度。
The effect of extrusion speed of 10-90 mm/min on the microstructure and hardness of Al-Zn-Mg-Cu aluminum alloy was studied by SEM,EBSD and hardness test.The results show that the average grain size of Al-Zn-Mg-Cu alloy decreases first and then increases with the increase of extrusion speed.The average grain size of the test alloy with extrusion speed of 50 mm/min is the smallest,which is 5.1μm.With the increase of extrusion speed,the hardness of the test alloy increases first and then decreases,and reaches the maximum value when the extrusion speed is 50 mm/min.50 mm/min is the best extrusion speed of Al-Zn-Mg-Cu alloy.
作者
邢艳辉
XING Yanhui(College of Applied Engineering,Henan University of Science and Technology,Sanmenxia 472000,China;Automotive Institute,Sanmenxia Polytechnic,Sanmenxia 472000,China)
出处
《热加工工艺》
北大核心
2021年第21期88-90,93,共4页
Hot Working Technology
基金
河南省科技攻关项目(182107000017)。
