Effect of electromagnetic field on microstructure and macrosegregation of flat ingot of 2524 aluminium alloy

作     者：左玉波 崔建忠 牟丹 朱庆丰 王向杰 李磊 Yu-bo ZUO;Jian-zhong CUI;Dan MOU;Qing-feng ZHU;Xiang-jie WANG;Lei LI

作者机构：东北大学材料电磁过程研究教育部重点实验室沈阳110819 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第7期

页      面：2408-2413页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Projects(51104043,51374067)supported by the National Natural Science Foundation of China Project(2012CB619506)supported by the National Basic Research Program of China Project(N120409002)supported by the Fundamental Research Funds for the Central Universities,China 

主　　题：2524 aluminium alloy grain refinement solidification microstructure macrosegregation low-frequencyelectromagnetic casting 

摘      要：Low frequency electromagnetic casting （LFEC） process with the application of an induction coil outside the conventional direct chill （DC） casting mould was used to prepare the flat ingot of 2524 alloy and the effect of electromagnetic field on the microstructure and macrosegregation of this alloy was systematically studied. The results show that the fiat ingot prepared by the LFEC process has a finer and more uniform as-cast microstructure and the grain morphology is transformed from dendrite and rosette-like to equiaxed structure. The LFEC process also shows a significant effect on macrosegregation, and with the application of electromagnetic field during casting process, the segregation in the centre of the ingot is obviously reduced. The mechanism of these effects was also discussed.