脉冲磁场控制铝及铝合金凝固组织的研究进展  

Research Progress in Controlling Solidification Microstructure of Aluminum and Aluminum Alloy by Pulsed Magnetic Field

作　　者：刘佳[1] 接金川[1] 曲建平 李国梁 李廷举[1] LIU Jia;JIE Jinchuan;QU Jianping;LI Guoliang;LI Tingju(Key Laboratory of Solidification Control and Digital Preparation Technology,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学凝固控制与数字化制备技术重点实验室,辽宁大连116024

出　　处：《铸造技术》2022年第8期625-632,I0030,共9页Foundry Technology

基　　金：国家自然科学基金(52071050);国家重点研发计划(2018YFE0306103)。

摘　　要：脉冲磁场(PMF)凭借瞬时强磁、对材料无污染和操作方便等优点,在铝及铝合金铸造方面具有良好的应用前景。针对形核的起源及柱状晶向等轴晶转变(CET)机制,论述了脉冲磁场对凝固组织的影响,总结了凝固组织的细化及控制机理,最后对数值模拟在此领域的应用进行了展望。Pulsed magnetic field(PMF)has a good application prospect in aluminum and aluminum alloy casting by virtue of instantaneous strong magnetism,no pollution to materials and convenient operation.Based on the origin of nucleation and the mechanism of columnar to equiaxed transition(CET),the influence of pulsed magnetic field on solidification structure is reviewed,the mechanism of solidification microstructure refinement and control is summarized,and the application of numerical simulation in this field is prospected.

关 键 词：脉冲磁场 凝固组织 晶粒细化 柱状晶向等轴晶转变 计算机模拟 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG111.4[金属学及工艺—金属材料]