阻尼冷却管法制备A356铝合金半固态浆料的研究  

Preparation of A356 Aluminum Alloy Semi-solid Slurry by Damper Cooling Tube Method

作　　者：张小立[1] 谢水生[2] 李廷举[1] 杨浩强[2] 金俊泽[1] 

机构地区：[1]大连理工大学材料科学与工程学院 [2]北京有色金属研究总院

出　　处：《特种铸造及有色合金》2007年第3期188-191,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(50374014)

摘　　要：介绍了阻尼冷却管法制备A356铝合金半固态浆料工艺的试验装置及其工艺流程,在不同浇注温度下进行了系列试验,并与冷却斜槽法进行了对比分析。结果表明,浇注温度越低,浇注的铸件晶粒尺寸和形状因子数值就越小,晶粒球化程度越高。与冷却斜槽法相比,同一工艺参数下阻尼冷却管法制备的铸件晶粒更为细小和圆整。The A356 aluminum alloy semi-solid slurry by damper cooling tube method was prepared under different pouring temperature conditions,and was compared with ones by cooling slope method.The results show that with decreasing in pouring temperature,the grain size and shape factors become smaller and smaller,which means the spherodization of grain is higher and higher.Compared with ones by cooling slope method,the grain in the semi-solid slurry exhibits finer and more roundness by damper cooling tube in the conditions of the same processing parameters.

关 键 词：阻尼冷却管法 冷却斜槽工艺 半固态浆料 浇注温度 晶粒尺寸 形状因子 

分 类 号：TG249.9[金属学及工艺—铸造]