采用固体粉末包埋渗铝法对AZ31镁合金薄板表面进行改性处理,增置富铝系改性层,选用常规的四辊轧机对表面改性后的AZ31镁合金薄板进行室温交叉轧制处理。利用XRD、SEM、光学显微镜和Corr Test腐蚀电化学测试系统等分析测试手段研究基体、轧制前和轧制后的渗铝试样表面的组织、性能演变情况。结果表明:轧制处理后富铝系改性层组织晶粒明显细小、均匀;轧制变形后富铝系改性层的耐磨性能略有提高,其表面显微硬度为63.5 HB,表面摩擦系数平均值约为0.6,表面摩擦磨损质量损失为0.26 mg;轧制变形后的富铝系改性层的耐腐蚀性能有较大的提高,其开路电位增加为-1.574 V,自腐蚀电位为-1.38 V,而自腐蚀电流密度提高一个数量级,为7.0×10-4m A/cm2。 The surface of AZ31 magnesium alloy sheet was modified with solid powder and aluminized method to increase the Al-rich modified layer. The surface-modified AZ31 magnesium alloy sheet was cross-rolled at room temperature by the conventional four-roll mill . XRD, SEM, optical microscope and Corr Test electrochemical corrosion testing system were used to study the microstructure and properties evolution of matrix, pre-rolling and post-rolling aluminized samples. The results show that the microstructure of the Al-rich modified layer is obviously fine and uniform after rolling. The wear resistance of the Al-rich modified layer is slightly increased after rolling, the surface microhardness is 63.5 HB, the surface friction The coefficient average is about 0.6 and the mass loss of friction and wear on the surface is 0.26 mg. The corrosion resistance of the Al-rich modified layer after rolling deformation is greatly improved, the open circuit potential increases to -1.574 V, the self-corrosion potential is -1.38 V, while the self-corrosion current density increased an order of magnitude, which was 7.0 × 10 -4 m A / cm 2.