(1. 中南大學(xué) 高性能復(fù)雜制造國家重點(diǎn)實驗室，長沙 410083；
2. 中南大學(xué) 機(jī)電工程學(xué)院，長沙 410083)
摘 要: 在雙輥連續(xù)鑄軋過程中施加電磁-超聲能場制備出1060鋁合金鑄軋板坯，經(jīng)不同冷軋變形量的冷軋后退火，制備出系列鋁板帶，從晶粒大小、形態(tài)和取向等方面分析電磁-超聲能場對鋁板帶再結(jié)晶組織與織構(gòu)的影響。結(jié)果表明：電磁-超聲能場可使鋁合金鑄軋板坯的平均晶粒尺寸減小50%，使第二相均勻彌散分布在晶內(nèi)和晶界上，并能降低織構(gòu)取向密度，使織構(gòu)組分漫散分布；電磁-超聲能場可加大鋁合金鑄軋板在冷軋-退火過程中的再結(jié)晶程度，并獲得更加細(xì)小均勻的再結(jié)晶組織；電磁-超聲能場還可降低鋁合金鑄軋板冷軋-退火后的再結(jié)晶織構(gòu)強(qiáng)度，抑制晶粒的擇優(yōu)取向，提高鋁合金鑄軋板的深沖成型性能。
關(guān)鍵字: 1060鋁合金；電磁-超聲鑄軋；冷軋；退火；織構(gòu)
（1. State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, China;
2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China）
Abstract:1060 aluminum alloy cast-rolling slab was prepared by electromagnetic-ultrasonic cast-rolling, then series of aluminum alloy plates were prepared through cold rolling and annealing. The effects of electromagnetic-ultrasonic energy field on the recrystallization microstructure and texture of 1060 aluminum alloy plates were researched through the analysis of grain size, form and orientation. The results show that electromagnetic-ultrasonic energy field can decrease the average grain size of aluminum alloy cast-rolling slab by 50%, make the precipitated phase distribute on the intracrystalline and grain boundary in homogeneous dispersion state, and reduce texture orientation density, making texture component distribute dispersively. Electromagnetic-ultrasonic energy field can enhance the recrystallization during cold-rolling and annealing of aluminum alloy cast-rolling plate, and obtain more uniform recrystallized structure with smaller grain size. Electromagnetic-ultrasonic energy field can reduce the recrystallization texture intensity of aluminum alloy cast-rolling plate after cold-rolling and annealing, and inhibit preferred orientation, thus improving the deep drawing forming performances of aluminum alloy cast-rolling plate.
Key words: 1060 aluminum alloy; electromagnetic-ultrasonic cast-rolling; cold rolling; annealing; texture
