The development of crystallographic texture during the thermo-mechanical processing of aluminium sheet results in the formation of pronounced plastic anisotropy, including the well-known earing phenomenon. In the present study we track the evolution of texture, microstructure and the resulting earing profiles in Al alloy AA 8011A during down-stream processing to final-gauge sheet in temper H14. This processing, which includes two interannealings, followed by a mild final temper rolling pass, was designed for providing minimum earing for earing-critical packaging applications. Besides the experimental characterization of microstructure, texture and earing along the standard process chain, means to optimize the earing behaviour are addressed. This includes changes in the homogenization practice, possible omission of one of the two interannealings and variation of the interannealing gauge. The resulting earing properties are discussed in the light of the interplay of deformation and recrystallization with the resultant texture changes along the process chain.

铝板热机械加工过程中晶体织构的发展导致形成明显的塑性各向异性，包括众所周知的耳现象。在本研究中，我们跟踪在回火到H14最终厚度薄板的下游加工过程中，铝合金AA 8011A的织构，微观结构和所产生的耳廓轮廓。此处理过程包括两次相互退火，然后进行适度的最终回火轧制，设计目的是为要求苛刻的包装应用提供最少的穗。除了沿着标准工艺链的微观结构，质地和穗形的实验表征外，还提出了优化穗形行为的方法。这包括同质化做法的变化，可能会省略两次相互退火之一，并且会改变相互退火的量规。根据变形和再结晶的相互作用，以及沿着工艺链产生的质地变化，讨论了所得的耳部特性。