Al-5.8%Cu合金半固态浆料的控制熔化制备法  

Preparation of Al-5.8%Cu alloy semi-solid slurry by controlled melting

作　　者：王晓颖[1] 介万奇[2] 李言祥[1] 

机构地区：[1]清华大学机械工程系,北京100084 [2]西北工业大学凝固技术国家重点实验室,西安710072

出　　处：《中国有色金属学报》2005年第1期66-71,共6页The Chinese Journal of Nonferrous Metals

摘　　要：研究了具有枝晶组织的Al 5.8%Cu合金在控制熔化过程中固相形态的演变, 以及加热速率、保温时间对固相形态演变的影响。分析了影响熔化组织中固相形态的因素, 提出由枝晶组织直接获得适合半固态成形的球晶组织的控制熔化工艺, 并制备了固相颗粒圆整、尺寸较小、分布均匀的半固态浆料。The microstructure evolution of a dendritic Al-5.8%Cu alloy during controlled heating and re-melting process was investigated. Attention has been paid to the effects of heating rate and holding time on the morphology changing of solid grains during re-melting. Based on the analysis of the factors influencing morphology of the melting grains, a new method to prepare semi-solid slurry by controlling as-cast microstructure and melting process was proposed. And a semi-solid slurry was successfully obtained by using the new method.

关 键 词：控制熔化 半固态 组织演变 

分 类 号：TG148[一般工业技术—材料科学与工程]