采用SEM-EBSD技术测试了室温和180℃条件下80%压下量轧制高纯铝样品的微取向分布.结果表明:平行于轧向的形变组织可分为取向分布集中和取向散布的带状组织.前者取向主要聚集于β-取向线,其中Br-取向({011}<211>)的小角度(2°-5°)晶界面积率比S-({123}<634>)和C-({112}<111>)取向的大10%-15%;随轧制温度从室温升至180℃,回复程度增强,中等角度(5°-15°)晶界面积率约升高10%.用Bishop-Hill晶体塑性理论分析β-取向线组织的塑性变形储能差异表明,取向的Taylor因子M越小,5个独立活化滑移系的组合数越多,其变形储能就越小,小角度晶界比例亦越大.
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