對(duì)1A80鋁片進(jìn)行了不同工藝的中間退火, 再冷軋得到鋁箔, 通過拉伸試驗(yàn)機(jī)、光學(xué)顯微鏡及X射線衍射儀等研究了退火工藝對(duì)鋁材拉伸性能、顯微組織和織構(gòu)的影響。結(jié)果表明: 中間退火工藝對(duì)鋁片和鋁箔力學(xué)性能和顯微組織有明顯的影響; 適當(dāng)溫度(250 ℃)的中間退火可以提高其抗拉強(qiáng)度和伸長(zhǎng)率, 改善其加工性能, 且有助于保持其中的冷軋纖維組織形態(tài)、降低晶粒度, 不影響成品退火后鋁箔的主要織構(gòu); 當(dāng)中間退火溫度高于300 ℃時(shí), 鋁材會(huì)出現(xiàn)再結(jié)晶, 使其拉伸性能明顯下降。
1A80 aluminum foils were prepared by cold rolling of aluminum sheets treated by intermediate annealing in different processes. The tensile properties, microstructure and texture of the material of aluminum were studied by tensile testing, optical microscopy and X-ray diffraction. Results show that the influences of intermediate annealing process on tensile properties and microstructure of the aluminum sheets and aluminum foils were obvious. The intermediate annealing at a proper temperature (250 ℃) can enhance the tensile strength and elongation of the material and improve its machinability. It was also was helpful to maintain the fiber morphology and reduce the grain size of the cold rolled material, and had no influence on main texture of aluminum foils after final annealing. When the intermediate annealing temperature was above 300 ℃, the recrystallization emerged in the material, which contributed to the decline of tensile properties of aluminum foils.