( 1. 東北大學(xué) 材料與冶金學(xué)院， 沈陽 110004；
2. 沈陽師范大學(xué) 物理科學(xué)與技術(shù)學(xué)院， 沈陽 110034)
摘 要: 采用不同速比對高純鋁板進(jìn)行異步冷軋， 并將冷軋樣品進(jìn)行不同溫度和時間的再結(jié)晶退火， 研究異步軋制速比對高純鋁箔織構(gòu)轉(zhuǎn)變的影響。 結(jié)果表明： 高速比的異步軋制在樣品中產(chǎn)生較強(qiáng)的旋轉(zhuǎn)立方織構(gòu)和{102}〈uvw〉織構(gòu)， 異步軋制退火后的高純鋁箔樣品具有很強(qiáng)的立方織構(gòu){001}〈100〉。 立方織構(gòu)的體積分?jǐn)?shù)與速比和溫度有關(guān)： 當(dāng)速比為1.06時， 溫度升至300 ℃開始出現(xiàn)立方織構(gòu)； 當(dāng)速比為1.17時， 溫度升到200 ℃就出現(xiàn)立方織構(gòu)。 立方織構(gòu)組分的形成存在一個閾值溫度， 此溫度與異步軋制的速比成反比， 隨著速比的增加， 閾值溫度逐漸降低， 這與異步軋制提高高純鋁箔的形變儲能有關(guān)。 異步軋制有利于在低溫時形成較強(qiáng)的立方{001}〈100〉織構(gòu)。
關(guān)鍵字: 異步軋制； 高純鋁箔； 織構(gòu)； 速比
（ 1. School of Materials and Metallurgy, Northeastern University,
Shenyang 110004, China;
2. College of Physical Science and Technology, Shenyang Normal University, Shenyang 110034, China）
Abstract: Hot rolled high purity aluminum sheet was cold rolled by cross shear rolling with different roll mismatch speed ratio. Then, the specimens were annealed by different processes. The effects of speed ratio on texture transformation were analyzed. The results show that the strong rotated cube texture components {001}〈110〉 and {102}〈uvw〉 form and develop in high roll mismatch speed ratio cross shear rolling specimen, and there are strong cube textures in the annealed specimen. The volume fraction of the cube texture relates to the speed ratio and the temperature. When the temperature increases to 300 ℃, the cube texture appears at the speed ratio of 1.06. When the temperature increases to 200 ℃, it appears at the speed ratio of 1.17. During the annealing of cross shear rolling specimen, there is a temperature threshold value for the formation and development of cube orientated grain, the value is inversely proportional to that of speed ratio. With the increase of the roll mismatch speed ratio, the threshold value decreases. The effects are attributed to an increase of deformation-stored energy. The cross shear rolling speeds up the nucleation and grain-growth of cube orientated grain at lower temperature.
Key words: cross shear rolling; high purity aluminum foil; texture; speed ratio
