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采用晶体取向分布函数方法 (ODF)研究和分析了在高纯铝中加入微量铍 (Be)对成品箔材立方织构的影响。研究结果表明 :添加 0 0 0 2 0 %铍 ,能增加成品高纯铝箔中立方织构含量 ,降低R织构比例。其作用机理是铍很难固溶于铝 ,但能与铁等微量杂质元素形成化合物 ,析出后可净化基体 ,降低基体中杂质铁的浓度 ,从而降低高纯铝再结晶温度 ,促进再结晶立方取向核心的形成与长大。另外 ,含铍样品的变形织构组分中C取向密度较大 ,Bs、S取向密度较小 ,而无铍样品中Bs组分最强 ,C组分最弱 ,退火时C取向有利于向立方织构的转化 ,Bs取向易产生R织构 ,因此 ,成品退火箔材中无铍样品的R织构强 ,含铍箔材中立方织构最强 ,R织构最弱。
The influence of the addition of trace beryllium (Be) on the cubic texture of the finished foil was studied and analyzed by the crystal orientation distribution function (ODF) method. The results show that the addition of 0 0 0 0 0% beryllium can increase the content of cubic texture in finished high purity aluminum foil and decrease the ratio of R texture. Its mechanism is that beryllium is difficult to dissolve in aluminum, but it can form compounds with trace impurities such as iron. After precipitation, the matrix can be purified to reduce the concentration of iron in the matrix, thereby lowering the recrystallization temperature of high purity aluminum and promoting the recrystallization of cubic The formation and growth of the orientation core. In addition, the deformation density of beryllium-containing textured texture components is larger, the orientation density of Bs and S is smaller, and the Bs component is the strongest and the C component is the weakest in the beryllium-free sample. Therefore, the R texture of beryllium-free samples in finished annealed foils is stronger, and the cubic texture of beryllium-containing foils is the strongest, while the texture of R is the weakest.