室温下对纯铜薄板进行一到六道次的异步累积叠轧变形加工.采用金相显微镜、扫描电镜附带背散射电子衍射、X射线衍射仪附带织构附件及拉伸试验机进行组织、取向观察及力学性能测试,获得铜材异步叠轧过程的显微组织、轧制织构变化过程和力学性能.结果表明:经过六道次的异步累积叠轧变形,由于压缩变形与剪切变形作用,使晶粒细化,铜材晶粒尺寸由30～50μm细化到5μm.异步叠轧过程中出现:{112｝<111>,{123}<634〉,{011}<211>和{011｝<100>几种主要组分轧制织构.材料的屈服强度与抗拉强度明显提高,六道次后分别达到348MPa和452MPa.材料的伸长率在二道次后显著下降到2.3％,然后随等效应变的增加略微下降.
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