半连续铸造亚共晶Al-Si合金的晶粒细化研究进展  

Research Progress of Grain Refinement in Semi-Continuous Casting ofSubeutectic Al-Si Alloys

作　　者：马韬 马鸿彬 蒋斌 林顺岩 褚庆元 Ma Tao;Ma Hongbin;Jiang bin;Lin Shunyan;Chu Qingyuan(Yuantai high-conductivity materials(Shanxi)Co.,Ltd.,Shanxi Province,Lüliang 035300,China;Yuantai Institute of high conductivity materials,Shanxi Province,Lüliang 035300,China)

机构地区：[1]元泰高导材料(山西)有限公司,山西吕梁035300 [2]元泰高导材料(山西)研究院,山西吕梁035300

出　　处：《有色金属加工》2023年第5期30-39,48,共11页Nonferrous Metals Processing

摘　　要：大规格Al-Si合金铸锭的晶粒细化,一直是工业化生产的难点和研究的热点。重点综述了细化剂Ti和Si中毒、B与Sr毒化对合金晶粒细化的影响,并介绍了熔体强剪切(melt conditioned direct chill,MC)MC-DC铸造方式细化Al-Si合金晶粒组织的优点及局限性,并提出了亚共晶Al-Si合金晶粒细化的研究新思路和发展方向,以期为工业化半连续铸造亚共晶Al-Si合金的生产提供参考和借鉴。In this paper,the grain refinement of large size Al-Si alloy ingot has always been a difficult point in inductrial production and a hot topic in research.The effects of Ti and Si poisoning as well as B and Sr poisoning on grain refinement of Al-Si alloy are summarized in this paper.The advantages and limitations of melt conditioned direct chill(MC)Mc-dc casting method for grain refinement of Al-Si alloy are also introduced.A new research idea and development direction of grain refinement of subeutectic Al-Si alloys are proposed in order to provide reference for the production of industrial semi-continuous casting subeutectic Al-Si alloys.

关 键 词：AL-SI合金 晶粒细化 复合变质 MC-DC铸造 

分 类 号：TG146.21[一般工业技术—材料科学与工程]