对1060工业纯铝分别进行室温轧制和深冷轧制,取成品厚度为300、200、100、50和25 μm 5组试样进行拉伸试验.结果表明,经过室温轧制的轧件,当其厚度减薄至100 μm时出现微尺寸效应,即厚度大于100 μm时随厚度减小抗拉强度增大,厚度小于100 μm时随厚度减小抗拉强度减小;发现100 μm是纯铝室温轧制时出现尺寸效应的临界值.与室温轧制相比,经过深冷轧制轧件微尺寸效应的临界值相同而表现形式不同,厚度小于临界值100 μm后其抗拉强度随厚度减小而增加的速度加快.在相同厚度条件下,深冷轧制后的轧件比室温轧制的晶粒内部亚结构更细小,分析认为这是其强度高于室温轧制的一个原因.
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