旋转磁场对Al-Cu-Mn-Zr-V合金组织和性能的影响

Effect of Rotating Magnetic Field on Microstructure and Properties of Al-Cu-Mn-Zr-V Alloy

以Al-Cu-Mn-Zr-V合金为研究对象,在合金凝固过程中进行旋转磁场处理,研究不同强度的磁场电流对Al-Cu-Mn-Zr-V合金凝固组织和力学性能的影响。试验结果表明:随着磁场电流的增加,合金的凝固组织呈现先细化后粗化的趋势,力学性能呈现先增大后减小的趋势,但均优于未处理的合金。旋转磁场处理后的合金晶界处的第二相分布更加密集,综合性能显著提升。当磁场电流为160 A时,Al-Cu-Mn-Zr-V合金凝固组织和力学性能的改善效果最为显著,其平均晶粒尺寸为90.5μm,抗拉强度和伸长率达到峰值,分别为243.16 MPa和11%。

This paper takes Al-Cu-Mn-Zr-V alloy as the research object,the rotating magnetic field treatment was carried out during the solidification process,and the effects of different magnetic field currents on the microstructure and mechanical properties of Al-Cu-Mn-Zr-V alloy were studied.The experimental results showed that with the increase of the magnetic field current,the microstructure of the alloy tended to be refined first and then coarsened,and the mechanical properties tended to increase first and then decrease,but they are better than the untreated alloy.The distribution of the second phase at the grain boundary of the alloy treated by the rotating magnetic field was more concentrated and uniform,and the comprehensive performance was significantly improved.The improvements of the microstructure and mechanical properties of the Al-Cu-Mn-Zr-V alloy were most significantly when the magnetic field current was 160 A.The average grain size was 90.5μm,and the tensile strength and elongation reached the peak values of 243.16 MPa and 11%,respectively.