A356铝合金液相线铸造形核规律  

Forming Nucleus Rule of Liquidus Casting Aluminum Alloy A356

作　　者：王平[1] 刘静[2] 路贵民[1] 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程教育部重点实验室,沈阳110004 [2]东北大学理学院,沈阳110004

出　　处：《材料工程》2002年第10期23-25,共3页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目 ( 5 99740 0 9)

摘　　要：研究了液相线铸造 A35 6铝合金在不同保温温度、不同保温时间下的组织形成规律。电子显微镜及图象分析仪分析表明 ,由于过冷和扩散的共同影响 ,A35 6铝合金液相线铸造最佳保温温度 6 0 5℃ ;在 6 0 min时间内 ,晶核数目随保温时间的延长而增加 。The engendering rule of organism of liquidus casting aluminum alloy A356 at different heat preservation temperature, different heat preservation time was investigated. The microstructure of organism was analyzed by means of electron microscope and image analysis apparatus. The results show that the optimum heat preservation temperature is 605℃ as a result of the super-cooling and diffuseness.Crystal nucleus number increases along with prolonging of heat preservation time in 1 hour,and distributing is uniformity increasingly.

关 键 词：形核规律 A356铝合金 液相线铸造 过冷 扩散 

分 类 号：TG27[金属学及工艺—铸造]