汽车用Mg-Zn-Y-Zr合金轧制工艺的研究  

Research on Rolling Process of Mg-Zn-Y-Zr Alloy for Automobile

作　　者：娄阳 LOU Yang(School of Mechanical Engineering,Nanjing University of Technology,Nanjing 210000,China;Henan Vocational College of Geology and Mineral Resources,Zhengzhou 450000,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210000 [2]河南地矿职业学院,河南郑州450000

出　　处：《热加工工艺》2024年第22期167-170,共4页Hot Working Technology

摘　　要：采用SEM、硬度测试、拉伸试验研究了不同温度轧制对Mg-6Zn-0.8Y-0.3Zr合金组织与力学性能的影响。结果表明:经不同温度轧制后,Mg-6Zn-0.8Y-0.3Zr合金第二相由条状、块状转变为颗粒状、小块状,呈半连续状聚集在晶界处。420℃轧制合金中晶粒均匀,细小颗粒状第二相弥散效果最好。随着轧制温度的升高,合金的硬度、抗拉强度先升高后降低,420℃轧制的合金的硬度和抗拉强度达到最大值,分别为71.2 HV和278 MPa。The effects of different rolling temperatures on the microstructure and mechanical properties of Mg-6Zn-0.8Y-0.3Zr alloy were studied by SEM,hardness test and tensile test.The results show that after rolling at different temperatures,the second phase of the alloy changes from strip and block to granular and small block,and aggregates at the grain boundary in a semi-continuous form.The grain size of 420℃rolled alloy is uniform,and the fine granular second phase has the best dispersion effect.With the increase of rolling temperature,the hardness and tensile strength of the alloy first increase and then decrease.The hardness and tensile strength of the alloy rolled at 420℃reach the maximum value,which is 71.2 HV and 278 MPa,respectively.

关 键 词：Mg-6Zn-0.8Y-0.3Zr合金 轧制温度 组织 力学性能 

分 类 号：TG335[金属学及工艺—金属压力加工]