铝合金板材制耳的理论测算

Modeling the Earing Behavior of Polycrystalline Aluminum Alloy in Cup Drawing

应用Tucker单晶制耳理论,结合晶体学取向空间划分的方法,预测铝合金板材中各织构组分所引起的制耳倾向类型及相对大小·首先对{100}〈001〉和{110}〈112〉取向单晶的制耳进行模拟,发现与Tucker单晶制耳理论所得结果完全一致·再将该方法应用于无织构的板材、冷轧板材、退火板材及西南铝厂生产成品板材的制耳计算,结果与理论预期值符合较好·此计算方法可以快速有效地预测板材制耳发生的倾向,并可以用于深冲铝合金板材的织构调控·基于'工艺 织构 制耳'关系的研究,有助于建立合适的织构/性能快速预报系统·

?A new method is proposed to predict the earing behavior of polycrystalline Aluminum sheet. The method is based on the Tuckers theory of earing proposed for single crystals by consideration of the partition of the orientation space. The number, position and relative heights of earing tendency for some important ideal orientations in single crystal aluminum was calculated. The calculated result is the same with the result from Tuckers theory. The new method was used to predict the earing behavior of the material with no texture,cold rolled sample, recrystallization sample and the finish product from SouthWestern Aluminum plant. It is shown that the predictions are in good agreement with experimental results. The texture can be regulated and adjusted according to the earing behavior of polycrystalline aluminum alloy sheet predicted by the method. This is also very useful in the fast prediction system of textureproperty on production line.