Nucleation at Cube Bands during Recrystallisation in Commercial Al Alloy
Nucleation at Cube Bands during Recrystallisation in Commercial Al Alloy
复制标题
商用铝合金再结晶过程中立方体带的形核
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
G. Gottstein
中科院分区：
文献类型：
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作者：
Olga Sukhopar;C. Schäfer;G. Gottstein
在本研究中，在立方带退火过程中的冷轧商业铝合金AA8079形核进行了研究。这项工作的主要目标是为随后的建模提供实验数据。通过对变形材料的研究，确定了立方带的几何参数。实验测量了变形状态下的立方带间距，并考虑了变形前状态下的初始立方分数和变形程度，用简单的几何模型计算了立方带间距。在随后的退火过程中的冷变形材料的成核频率估计从变形立方带变形前的几何形状和尺寸。通过对立方取向晶核与相邻S取向变形基体之间取向关系的研究，确定<111>了具有最佳生长条件的40°晶界所占比例。
In the present study, nucleation at Cube bands during annealing of a cold rolled commercial aluminium alloy AA8079 was investigated. The main goal of this work was to provide experimental data for subsequent modelling. By studying the deformed material the geometrical parameters of Cube bands were determined. The Cube band spacing in the deformed state was measured experimentally and accordingly calculated with a simple geometric model, taking the initial Cube fraction in the pre-deformed state and the deformation degree into account. The nucleation frequency during subsequent annealing of the cold deformed material was estimated from the geometry and size of deformed Cube bands prior to deformation. From investigations of the orientation relationship between the Cube oriented nuclei and the adjacent deformed matrix with S orientation, the fraction of 40°<111> grain boundaries having optimum growth conditions, was established.