脉冲磁场对Zn-3Cu合金凝固组织和性能的影响  

Effect of pulsed magnetic field on solidification microstructure and properties of Zn-3Cu alloy

作　　者：刘厚清 彭聪 袁源平 周全[1] 陈乐平[1] 徐勇 LIU Hou-qing;PENG Cong;YUAN Yuan-ping;ZHOU Quan;CHEN Le-ping;XU Yong(School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《材料热处理学报》2024年第2期93-101,共9页Transactions of Materials and Heat Treatment

摘　　要：研究了脉冲磁场处理工艺参数(脉冲电压和脉冲频率)对铸态Zn-3Cu合金凝固组织及性能的影响。结果表明:脉冲磁场可以有效细化Zn-3Cu合金的凝固组织;随着脉冲电压在0~300 V范围内增加,Zn-3Cu合金的晶粒尺寸逐渐减小;随着脉冲频率在0~10 Hz范围内增加,合金的晶粒尺寸先增大后减小再增大,第二相(CuZn_(5))尺寸先减小后增大,当脉冲频率为5 Hz时,合金凝固组织细化效果最佳。脉冲磁场可以提高合金的力学性能和耐蚀性能,当脉冲电压为300 V、脉冲频率为5 Hz时,合金的力学性能和耐蚀性能最好,其抗拉强度为106.05 MPa,伸长率为7.14%,与未经磁场处理的合金相比,分别提高了37.9%和32.7%。Effect of pulsed magnetic field treatment process parameters(pulse voltage and pulse frequency) on solidification structure and properties of as-cast Zn-3Cu alloy was studied.The results show that the pulsed magnetic field can effectively refine the solidification structure of the Zn-3Cu alloy.As the pulse voltage increases in the range of 0-300 V,the grain size of the Zn-3Cu alloy gradually decreases.As the pulse frequency increases in the range of 0-10 Hz,the grain size of the alloy first increases,then decreases and then increases,the size of the second phase(CuZn_5) first decreases and then increases.When the pulse frequency is 5 Hz,the refinement effect of solidification structure of the alloy is the best.Pulsed magnetic field can improve the mechanical properties and corrosion resistance of the alloy.When the pulse voltage is 300 V and the pulse frequency is 5 Hz,the mechanical properties and corrosion resistance of the alloy are the best,with the tensile strength of 106.05 MPa and the elongation of 7.14%,which are 37.9% and 32.7% higher than those of the alloy without magnetic field treatment,respectively.

关 键 词：Zn-3Cu合金 脉冲磁场 凝固组织 力学性能 耐蚀性能 

分 类 号：TG146.1[一般工业技术—材料科学与工程]