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应用EBSD技术和织构定量检测手段分析高纯铝箔成品退火的再结晶立方取向亚晶粒的长大行为,以及整体中晶粒尺寸和取向差的分布规律,研究了微量元素锡对铝箔再结晶立方织构的影响。结果表明:高纯铝箔的再结晶织构主要由立方织构及R织构组成,二者的相对强弱随锡含量有规律地变化。锡含量较低时立方取向亚结构形核及快速长大的优势不受到影响,锡作为代替铅的环保型微量元素可以确保高压阳极铝箔95%以上的立方织构占有率。锡含量过高时,非立方取向再结晶核获得更多的生长机会,长时间加热大尺寸非立方取向晶粒可通过吞噬立方取向亚晶粒发生异常长大,立方织构占有率明显下降。
The growth behavior of recrystallized cubic orientated subgrains and the distribution of grain size and orientation difference in the whole annealed high purity aluminum foil were analyzed by EBSD technique and quantitative detection of texture. The effects of trace element tin on the recrystallization of aluminum foil The effect of cubic texture. The results show that the recrystallization texture of high purity aluminum foil mainly consists of cubic texture and R texture, and the relative strength of the two changes regularly with the content of tin. The advantages of cubic orientated sub-structure nucleation and rapid growth are not affected when the content of tin is low. Tin, as an environmentally friendly trace element instead of lead, can ensure the cubic texture occupancy rate of high-voltage anode aluminum foil more than 95%. When the content of tin is too high, the growth of non-cubic orientation recrystallized nuclei will get more growth. Long-time heating of large-size non-cubic oriented grains may occur abnormally by phagocytosis of cubic orientation subgrains, and the cubic texture occupy rate obviously drops.