复合锭直接水冷半连续铸造过程的研究  

Study on the Direct-Chill Semi-continuous Casting Process of Composite Ingot

作　　者：蒋会学[1] 秦克[1] 张海涛[1] 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2010年第9期1274-1277,共4页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展计划项目(2005CB623707)

摘　　要：在传统结晶器中安装了冷却板,采用直接水冷半连续铸造法实现了用于生产钎焊板的铝合金复合锭的实验室制备,并对半连续铸造过程及工艺进行研究,主要研究了铸造过程中接触面附近温度场分布、复合锭接触面两侧的宏观形貌、微观组织及成分分布、硬度分布.结果表明:在冷却板的作用下接触面附近形成了一层具有一定厚度的半固态层,从而保证复合铸造过程的顺利实现,复合锭中两种铝合金接触面结合较好,且为一种冶金结合,接触面两侧的成分分布和硬度分布有较好的对应关系.With a cooling plate mounted in the traditional mold,the composite aluminum alloy ingot for making brazing sheet was prepared in lab by the direct-chill（DC） semi-continuous casting process,and such a process was investigated involving mainly temperature field distribution near the contact interface between two different aluminum alloys during DC casting,macro-morphology,microstructure and distributions of both components and hardness of the composite ingot.The results showed that the semi-solid layer with a certain thickness is formed under the action of cooling plate in the vicinity of the contact interface,thus ensuring the successful implementation of casting the composite ingot,where the two different aluminum alloys are well bonded together metallurgically.It was found that the distributions of components and hardness of the two different aluminum alloys in the composite ingot are in corresponding relation.

关 键 词：直接水冷半连续铸造 复合锭 接触面 半固态层 

分 类 号：TG292[金属学及工艺—铸造]