本文選題：半固態(tài) + 鋁合金　； 參考：《鑄造》2016年02期

【摘要】：采用內(nèi)冷式攪拌法制備了A319、A356、A380、ZL203、7075等5種牌號(hào)鋁合金的半固態(tài)漿料。研究了內(nèi)冷攪拌速度、內(nèi)冷塊/鋁液質(zhì)量比、鋁液溫度對(duì)A319半固態(tài)漿料顯微組織的影響。結(jié)果表明:提高內(nèi)冷攪拌速度不僅能提高初生琢-Al相圓整度,還具有晶粒細(xì)化效應(yīng)。在內(nèi)冷塊/鋁液質(zhì)量比為3%、鋁液溫度為615℃以及內(nèi)冷塊/鋁液質(zhì)量比為5%、鋁液溫度為615~625℃條件下均可以制備出組織良好的半固態(tài)漿料,顯微組織中初生琢-Al相平均晶粒尺寸和形狀因子分別可以達(dá)到61~71滋m和0.68~0.73。分析了內(nèi)冷式攪拌法制備鋁合金半固態(tài)漿料過(guò)程中球狀晶的形核及長(zhǎng)大過(guò)程。
[Abstract]:The semi-solid slurry of five kinds of aluminum alloys, A319A356A380ZL2037075 and so on, was prepared by internal cooling stirring method. The effects of stirring speed, mass ratio of internal cooling block to liquid aluminum and temperature of liquid aluminum on microstructure of A319 semi-solid slurry were studied. The results show that increasing the speed of internal cooling agitation can not only improve the roundness of primary chisel-Al phase, but also have the effect of grain refinement. The semi-solid slurry with good microstructure can be prepared at the mass ratio of inner cooling block to liquid aluminum at 615 鈩，

本文編號(hào)：2087687