Zr和脉冲磁场对Mg-Y-Zn-Ca合金组织及压缩性能的影响

李鹏; 周全; 陈舸; 陈乐平; 谢东原

doi:10.15980/j.tzzz.2020.04.019

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Zr和脉冲磁场对Mg-Y-Zn-Ca合金组织及压缩性能的影响
Effects of Zr and Pulsed Magnetic Field on Solidified Structure and Compression Properties of Mg-Y-Zn-Ca Alloy
2020年40卷第4期页码：431-435
纸质出版日期： 2020 ，
DOI： 10.15980/j.tzzz.2020.04.019

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[1]李鹏,周全,陈舸,陈乐平,谢东原.Zr和脉冲磁场对Mg-Y-Zn-Ca合金组织及压缩性能的影响[J].特种铸造及有色合金,2020,40(04):431-435.

Li Peng, Zhou Quan, Chen Ge, et al. Effects of Zr and Pulsed Magnetic Field on Solidified Structure and Compression Properties of Mg-Y-Zn-Ca Alloy[J]. Special Casting & Nonferrous Alloys, 2020,40(4):431-435.
[1]李鹏,周全,陈舸,陈乐平,谢东原.Zr和脉冲磁场对Mg-Y-Zn-Ca合金组织及压缩性能的影响[J].特种铸造及有色合金,2020,40(04):431-435. DOI： 10.15980/j.tzzz.2020.04.019.

Li Peng, Zhou Quan, Chen Ge, et al. Effects of Zr and Pulsed Magnetic Field on Solidified Structure and Compression Properties of Mg-Y-Zn-Ca Alloy[J]. Special Casting & Nonferrous Alloys, 2020,40(4):431-435. DOI： 10.15980/j.tzzz.2020.04.019.

摘要

对比研究了未处理、Zr处理、脉冲磁场处理及脉冲磁场-Zr复合处理对长周期结构增强Mg-5Y-2.5Zn-1.2Ca合金凝固组织及压缩性能的影响

同时考察了复合处理条件下脉冲电压和频率对合金的影响。结果表明

Zr处理、脉冲磁场处理、复合处理后

合金的凝固组织和压缩性能均有所改善

其中复合处理的效果最好;与未处理合金相比

复合处理后合金的抗压强度和压缩率分别提高43.9%和15.4%。在0～300V内

随着脉冲电压增大

合金的平均晶粒尺寸逐渐减小;在1～10Hz内

随着脉冲频率增大

合金的平均晶粒尺寸先减小后增大

转折点为5Hz。晶粒尺寸越小

合金的第二相分布越均匀。合金的压缩性能与其晶粒尺寸基本对应。

Abstract

Effects of untreated

Zr modification

treatment of pulsed magnetic field and compound treatment of pulsed magnetic field and Zr were investiagted on the solidified structure and compression properties of Mg-5Y-2.5 Zn-1.2Ca alloy enhanced by long period structure.Effects of pulse voltage and frequency on the alloy under compound treatment condition were also analyzed.The results show that after Zr modification

treatment of pulse magnetic field and compound treatment

solidification structure and compression properties of the alloy are improved

and the compound treatment presents the desirable effect.The compressive strength and compression ratio of the alloy with compound treatment are increased by 43.9% and 15.4%

respectively.In the range of 0～300 V

as the pulse voltage increases

grain size of the alloy is decreased gradually.In the range of 1～10 Hz

as the pulse frequency increases

grain size of the alloy is decreased at first and then increased

and the turning point is 5Hz.The smaller the grain size is

the more uniform the second phase distribution is.The compressive properties of the alloy are corresponded to its grain size.