触变成形ZL104铝合金的低温浇注工艺研究  

Study on low-temperature casting of ZL104 for thixoforming

作　　者：李辉[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009

出　　处：《现代制造工程》2006年第2期71-72,97,共3页Modern Manufacturing Engineering

摘　　要：研究低温浇注工艺对ZL104铝合金半固态重熔加热过程中组织变化的影响。实验结果表明，降低浇注温度可细化合金的铸态组织，进一步细化半固态重熔过程中球形初生α-Al晶粒，当浇注温度为605℃，在580℃下半固态保温20～30min时，初生α-Al呈细小、均匀、球形的晶粒，满足ZL104铝合金触变成形组织的要求。The effects of low-temperature casting on the structure of Al-alloy ZL104 during semisolid reheating were investigated. The experimental result shows that：reducing temperature of casting can refine the as-cast structure of ZL104, and ratine globular primary α-Al grains during semisolid reheating. When casting at 605℃, semisolid holding 20 ～ 30min at 580℃, primary α-Al grains appeared fine, uniform and globular,and is fit for the microstructure requirements of thixoforming of ZL104.

关 键 词：ZL104 低温浇注 触变成形 球形晶粒 

分 类 号：TG249[金属学及工艺—铸造]