分层电磁搅拌工艺对TiB_(2)颗粒团聚的影响及分散机理  

Effects of Multi-layered Electromagnetic Stirring Process on TiB_(2) Particle Agglomer⁃ates and Dispersion Mechanism

作　　者：吴锦熙 王连登[1] 牛渊博 陈明 赵洪全 WU Jinxi;WANG Liandeng;NIU Yuanbo;CHEN Ming;ZHAO Hongquan(School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108;Fujian Kinrui Hi-Tech Co.,Ltd.,Fuzhou 353300;Fujian Huawei Juquan Precision Engineering Technology Co.,Ltd.,Fuzhou 350100)

机构地区：[1]福州大学机械工程及自动化学院,福州350108 [2]福建省金瑞高科有限公司,福州353300 [3]福建省华威钜全精工科技有限公司,福州350100

出　　处：《特种铸造及有色合金》2025年第3期381-386,共6页Special Casting & Nonferrous Alloys

基　　金：福建省区域发展资助项目(2023H4011)。

摘　　要：针对TiB_(2)颗粒增强铝基复合材料中颗粒易大面积团聚问题,采用自主设计的分层电磁搅拌设备制备TiB_(2)/A356铝基复合材料,结合OM、SEM、EDS等测试手段,研究了分层电磁搅拌工艺(初始搅拌温度、搅拌时间)对TiB_(2)/A356组织的影响。结果表明,当初始搅拌温度为640℃,搅拌时间为30 s时,分层电磁搅拌工艺对TiB_(2)颗粒团聚体分散效果最佳,其团聚体尺寸为5~10μm;分层电磁搅拌工艺可以加强熔体间的对流,细化α-Al相,破碎TiB_(2)颗粒团聚体,改善TiB_(2)颗粒的团聚现象。Aiming at the agglomeration in a large area of TiB_(2)particle reinforced aluminum matrix composites,TiB_(2)/A356 aluminum matrix composites were prepared by self-designed multi-layered electromagnetic stirring equipment,and effects of multi-layered electromagnetic stirring process(starting stirring temperature,stirring time)on microstructure of TiB_(2)/A356 were investigated combined with the testing means of OM,SEM,EDS,etc.The results indicate that with the starting stirring temperature of 640℃ and stirring time of 30 s,effects of multi-layered electromagnetic stirring process on dispersion of TiB_(2)agglomerates are desirable,and the size of agglomerates is 5~10μm.The multilayered electromagnetic stirring process can enhance the convection between the melts,refineα-Al phase,and break TiB_(2)particle agglomerates,improving the agglomeration phenomenon of TiB_(2)particles.

关 键 词：TiB_(2) 分层电磁搅拌工艺 颗粒团聚 分散机理 

分 类 号：TB331[一般工业技术—材料科学与工程]