The cold rolling texture of AA2099 sheets was strongly influenced by the prior heat treatment. Two typical heat treatments, including solid solution (T4) and underaging (T6) were utilized to control slip behavior by different precipitates during cold rolling. A much weaker texture with an orientation scatter towards higher \(\varPhi\) angles was found in the as-rolled T6 specimen (T6R). Slip behavior was analyzed using geometry necessary boundaries distribution. Results show that the T6R specimen experienced a strong co-planar slip compared to the as-rolled T4 specimen. Prosperity of co-planar slips and limitation of co-direction slips were main reasons for the weakening of Copper texture component in the T6R specimen. The distinguish slip behavior was caused by existence of \({{\updelta ^{\prime}}}\) phase with GP-I zones fillings in the T6 specimen. This phase could be easily sheared by dislocations and then promoted co-planar slips in further deformation.

Graphical abstract

中文翻译：

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$${\delta^{\prime}}$$ δ ′ 相与GP-I区填充物对AA2099滑移行为和冷轧织构的影响

AA2099 板材的冷轧织构受先前热处理的影响很大。两种典型的热处理，包括固溶 (T4) 和欠时效 (T6) 被用来控制冷轧过程中不同沉淀物的滑移行为。在轧制后的 T6 试样 (T6R) 中发现了一种更弱的纹理，具有朝向更高\(\varPhi\)角度的方向散射。使用几何必要边界分布分析滑动行为。结果表明，与轧制后的 T4 试样相比，T6R 试样经历了强烈的共面滑移。共面滑移的繁荣和同向滑移的限制是T6R试样中铜织构成分减弱的主要原因。区分滑移行为是由于存在\({{\updelta ^{\prime}}}\)相与 GP-I 区填充在 T6 标本中。该相很容易被位错剪切，然后在进一步变形中促进共面滑移。

图形概要