采用累积轧制(ARB)技术在室温下对1060工业纯铝进行轧制试验,用光学显微镜、透射电镜、拉伸试验机研究分析了变形前及不同道次后材料的微观组织和力学性能.结果表明:材料经轧制后,获得小于1μm的细晶粒,在ARB 7道次后得到了平均晶粒尺寸为520 nm的超细晶组织;随着ARB道次的增加,材料的抗拉强度在ARB 4道次后达到最大值197 MPa,之后略有降低;硬度值上升,在ARB 4道次后变化平缓;伸长率在ARB前3道次过程中从23%下降到9%,随着ARB道次的增加,伸长率回升,在ARB 7道次后为16%.
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