(中北大學(xué) 材料科學(xué)與工程學(xué)院，太原 030051)
摘 要: 采用蛇形通道法制備ZL101鋁合金半固態(tài)漿料，研究澆注溫度、彎道數(shù)量、蛇形通道溫度對(duì)ZL101鋁合金半固態(tài)漿料顯微組織的影響。結(jié)果表明:澆注溫度在630~680 °C范圍時(shí)可獲得滿意的ZL101鋁合金半固態(tài)漿料，隨澆注溫度的降低，初生α(Al)由薔薇狀向近球狀或球狀組織演變。在相同澆注溫度下，彎道數(shù)量增加，可以改善初生α(Al)晶粒的形貌，降低晶粒尺寸。當(dāng)蛇形通道溫度提高時(shí)，通過(guò)降低澆注溫度，同樣可以獲得合格的半固態(tài)漿料。彎道內(nèi)的合金熔體具有“自攪拌”作用，使初生晶核演變?yōu)榍驙罨蚪驙罹Я！?/span>
關(guān)鍵字: ZL101鋁合金；半固態(tài)；漿料；蛇形通道
（School of Materials Science and Engineering, North University of China, Taiyuan 030051, China）
Abstract:Semi-solid slurry of ZL101 aluminum alloy was prepared using serpentine channel. The influences of the pouring temperature, the number of curves and the serpentine channel temperature on the microstructure of semi-solid ZL101 aluminum alloy were investigated. The results show that, satisfied semi-solid slurry of ZL101 aluminum alloy was prepared with pouring at 630-680 °C. The morphology of primary α(Al) grains transforms from rosette to spheroid with the decrease of pouring temperature. At the same pouring temperature, increasing the number of curves can improve the morphology of primary α(Al) grains and decrease the grain size. Qualified slurry can be attained with lowering the pouring temperature when the serpentine channel temperature is higher. The alloy melt has the effect of “self-stirring” in the serpentine channel, which can make the primary nuclei gradually evolve into spherical and near-spherical grains.
Key words: ZL101 aluminum alloy; semi-solid; slurry; serpentine channel
