复合磁场对Mg93Zn6Y1合金凝固组织和力学性能的影响

占维; 金帆; 刘栩瑞; 张磊

doi:10.15980/j.tzzz.2018.03.021

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复合磁场对Mg₉₃Zn₆Y₁合金凝固组织和力学性能的影响
Effects of Compound Magnetic Field on Microstructure and Mechanical Properties of the Mg₉₃Zn₆Y₁ Alloy
2018年38卷第3期页码：309-311
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.03.021

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[1]占维,金帆,刘栩瑞,张磊.复合磁场对Mg_(93)Zn_6Y_1合金凝固组织和力学性能的影响[J].特种铸造及有色合金,2018,38(03):309-311.

Zhan Wei, Jin Fan, Liu Xurui, et al. Effects of Compound Magnetic Field on Microstructure and Mechanical Properties of the Mg₉₃Zn₆Y₁ Alloy[J]. Special Casting & Nonferrous Alloys, 2018,38(3):309-311.
[1]占维,金帆,刘栩瑞,张磊.复合磁场对Mg_(93)Zn_6Y_1合金凝固组织和力学性能的影响[J].特种铸造及有色合金,2018,38(03):309-311. DOI： 10.15980/j.tzzz.2018.03.021.

Zhan Wei, Jin Fan, Liu Xurui, et al. Effects of Compound Magnetic Field on Microstructure and Mechanical Properties of the Mg₉₃Zn₆Y₁ Alloy[J]. Special Casting & Nonferrous Alloys, 2018,38(3):309-311. DOI： 10.15980/j.tzzz.2018.03.021.

摘要

将脉冲磁场和稳恒磁场组成复合磁场作用于Mg

合金的凝固过程

分析复合磁场对合金凝固组织和力学性能的影响。结果表明

相比单一磁场

经复合磁场处理后合金的凝固组织细化更为显著

初生相的形貌转变为蔷薇状和多边形状共存

平均晶粒尺寸仅为146μm;第二相的形貌转变为不连续网状

其分布也更为均匀和弥散。经复合磁场处理后

合金表现出理想的综合力学性能

其室温下的屈服强度、抗拉强度和伸长率分别达到172 MPa、231 MPa和3.39%

相比未处理合金提高了73.4%、68.6%和63.1%。

Abstract

Effects of compound magnetic field（CMF）coupled with steady magnetic field（SMF）and pulsed magnetic field（PMF）on microstructure and mechanical properties of the Mg

alloy were investigated.The results show that the microstructure of alloy is refined remarkably with CMF treatment compared with that of ones with SMF treatment or with PMF treatment

respectively.The primaryα-Mg in the alloy treated by CMF is transformed from fully developed dendrites with the average grain size of 1 180μm to rosette-like and polyhedral morphology with the average grain size of 146μm.Moreover

the second phase is changed into discontinuous fine reticular morphology with more homogeneous and dispersed distribution.The alloy treated by CMF exhibits the desirable mechanical properties

where yield strength

ultimate tensile strength and elongation at room temperature reach 172 MPa

231 MPa and 3.39%

which are increased by 73.4%

68.6% and 63.1%

respectively

compared with those of the untreated alloy.