MSMT法制备铝合金半固态浆料组织控制的研究  

Study on the Microstructure Control of Aluminum Alloy Semi-solid Slurry Prepared by MSMT Technology

作　　者：梁博[1] 徐骏[1] 曾怡丹[1,2] 杨必成[1] 张志峰[1] 

机构地区：[1]北京有色金属研究总院国家有色金属复合材料工程技术研究中心,北京100088 [2]内蒙古工业大学,内蒙古呼和浩特010062

出　　处：《铸造技术》2008年第11期1518-1521,共4页Foundry Technology

基　　金：国家基础研究发展计划(2006CB605203);国家高技术研究发展计划(2006AA03Z115)

摘　　要：采用自行设计的分散混合流变制浆技术(MSMT),制备出了组织细小、均匀且具有近似球状α-Al初生相的铝合金半固态浆料。试验结果表明,熔体浇注温度、分散器转速和制浆室温度是影响半固态浆料组织的主要因素,低的熔体浇注温度和制浆室温度有利于减小初生相的尺寸,促进其向球状生长。此外,对MSMT技术的形核机理进行了分析。Aluminum alloy semi-solid slurry with fine and uniform structure and approximate spherical primary α-Al was prepared utilizing a self-developed apparatus of melt spreading and mixing technology （MSMT）. The experimental results shows that the microstructure of the semi-solid slurry is mainly depended on melt pouring temperature, mixer rotation speed, and slurry-making chamber temperature. Low melt pouring temperature and slurry-making chamber temperature are favorable for reducing size of primary phase and promoting the formation of spherical primary phase. In addition, the nucleation mechanism of MSMT technology is discussed.

关 键 词：流变制浆技术 半固态铝合金 形核 

分 类 号：TG249.9[金属学及工艺—铸造]