在双辊连续铸轧过程中施加电磁-超声能场制备出1060铝合金铸轧板坯,经不同冷轧变形量的冷轧后退火,制备出系列铝板带,从晶粒大小、形态和取向等方面分析电磁-超声能场对铝板带再结晶组织与织构的影响。结果表明:电磁-超声能场可使铝合金铸轧板坯的平均晶粒尺寸减小50%,使第二相均匀弥散分布在晶内和晶界上,并能降低织构取向密度,使织构组分漫散分布;电磁-超声能场可加大铝合金铸轧板在冷轧-退火过程中的再结晶程度,并获得更加细小均匀的再结晶组织;电磁-超声能场还可降低铝合金铸轧板冷轧-退火后的再结晶织构强度,抑制晶粒的择优取向,提高铝合金铸轧板的深冲成型性能。
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.