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采用累积复合轧制(ARB)技术制备6063Al/MB2/6063Al多层结构复合材料,利用电子拉伸机、金相显微镜和扫描电镜研究了常温态和热处理后ARB不同变形道次复合材料的组织和性能变化。结果表明,ARB技术能够有效细化MB2层金属组织;ARB 2道次平均晶粒尺寸由16μm细化到2μm,随着轧制道次的增加,组织均匀性提高,但晶粒尺寸略有长大;抗拉强度总体呈先升后降的趋势,其中ARB 2道次最高,为192.5 MPa;复合材料伸长率在ARB 1、2道次轧制后变化不大,ARB 3～5道次轧制后复合材料的伸长率逐渐下降。
6063Al / MB2 / 6063Al multi-layer structure composites were prepared by cumulative composite rolling (ARB) technique. The microstructure and mechanical properties of ARB composite under different temperatures and heat treatments were investigated by means of electronic tensile tester, optical microscope and scanning electron microscope Performance changes. The results show that the ARB technique can refine the microstructure of MB2 layer effectively. The average grain size of ARB 2 passes from 16μm to 2μm. With the increase of rolling pass, the homogeneity of microstructure is improved but the grain size is slightly longer The tensile strength tended to increase first and then decrease. The highest ARB 2 was 192.5 MPa. The elongation of composite did not change much after ARB 1 and 2 passes, After rolling the elongation of composite materials gradually decreased.