Preparation of semi-solid A380 aluminum alloy slurry by serpentine channel  

采用蛇形通道制备半固态A380铝合金浆料（英文）

作　　者：刘志勇[1] 毛卫民[1] 王伟番 郑志凯[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《Transactions of Nonferrous Metals Society of China》2015年第5期1419-1426,共8页中国有色金属学报（英文版）

基　　金：Project(2011CB606300)supported by the National Basic Research Program of China;Project(5077400)supported by the National Natural Science Foundation of China

摘　　要：The semi-solid slurry of A380 aluminum alloy was prepared by the serpentine channel. The effects of pouring temperature, curve number and curve diameter of the serpentine channel on the microstructure of the semi-solid A380 aluminum alloy slurry were investigated. The results show that the satisfactory semi-solid A380 aluminum alloy slurry could be obtained when the pouring temperature ranged from 630 to 650 °C. Under the same conditions, increasing the curve number or reducing the curve diameter of the serpentine channel would decrease the average diameter and increase the shape factor of the primary α（Al） grains. The ＂self-stirring＂ of the alloy melt in the serpentine channel was beneficial to the ripening of the dendrites and the spheroidizing of the primary α（Al） grains.采用蛇形通道浇注法制备半固态A380铝合金浆料。研究浇注温度、弯道数量和通道内径对半固态A380铝合金浆料显微组织的影响。结果表明：浇注温度在630-650°C时可获得优质的半固态A380铝合金浆料。在相同条件下,增加弯道数量或减小通道内径可减小初生α（Al）晶粒的平均直径,同时提高其形状因子。蛇形通道内合金熔体的＂自搅拌＂有利于枝晶的熟化和初生α（Al）晶粒的球化。

关 键 词：A380 aluminum alloy semi-solid slurry serpentine channel primary α（Al） 

分 类 号：TG292[金属学及工艺—铸造]