对铸态及轧制态的纯铝进行了等径角挤压(ECAP)变形,用透射电镜观察了变形后的显微组织,并对不同道次变形后的材料进行了硬度测定.结果表明:ECAP方法可使纯铝组织获得显著细化,在相同的变形条件下,铸态与轧制态纯铝均获得了等轴细晶组织,且晶粒尺寸相差不大.1道次ECAP变形后材料的硬度明显增大,随后每道次硬度的增大趋势明显变缓.这说明初始状态对ECAP变形后的组织和性能影响不大.
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