过共晶铝-硅合金处理技术的研究进展  

Advances in research on hypereutectic Al-Si alloy treatment

作　　者：赵作福[1] 齐锦刚[1] 王建中[1] 

机构地区：[1]辽宁工业大学材料与化学工程学院,辽宁锦州121001

出　　处：《轻合金加工技术》2010年第6期6-10,共5页Light Alloy Fabrication Technology

基　　金：国家自然科学基金资助项目(No.50674054和No.50174028);辽宁省科技厅项目(No.20081097)

摘　　要：综述了为改善过共晶铝-硅合金的性能,目前所采用的控制合金中初晶硅尺寸、形态和分布的各种处理方法及其机制,它们包括细化变质、合金熔体过热处理、半固态搅拌、快速凝固、电磁场作用、电脉冲孕育处理等方法。从合金中初晶硅尺寸、形态和分布等方面比较了各种处理方法的优缺点。The various treatment methods and their mechanisms have been comprehensively described,which are now employed in controlling the size,shape and distribution of the primary crystal silicon in the alloys to improve the properties of the hypereutectic Al-Si alloys.These methods include modification through refinement,treatment of the overheat of the alloy melt,mixing under semisolid state,quick solidification,application of electrically magnetic filed,inoculation through electrical impulse.The advantages and disadvantages of these methods have been compared from such aspects as the size,shape and distribution of the promary crystal silicon in the alloys.

关 键 词：过共晶铝-硅合金 初晶硅 凝固组织 外场 

分 类 号：TG146.21[一般工业技术—材料科学与工程]