关键词: 铝基多层复合材料, 累积叠轧焊, 再结晶退火, 铁基非晶合金增强, 力学性能

Abstract: 1060 Al/Fe-based amorphous alloy multi-layered composites were prepared by means of accumulative roll bonding and intermediate annealing. The microstructure, fracture morphologies, phases and mechanical properties of the Al-based composites were analyzed by using optical microscope, scanning electronic microscope, X-ray diffraction and tensile test. The results show that the Fe-based amorphous alloy undergoes partial crystallization during the intermediate annealing process at 300 ℃, and breaks up during the cumulative deformation rolling process, and the degree of breaking up increases with increasing rolling deformation passes. The composite plates softens evidently in the first 6 passes of cumulative deformation rolling, the softening effect is more obvious with the increasing passes. With the increase of accumulated rolling deformation passes, the mechanical properties of Al-based composites have changed obviously. After the second rolling deformation, the yield strength and tensile strength of the composites reach the maximum values of 140 MPa and 156 MPa respectively, and the elongation is 5.53%, reaching the best comprehensive properties.

Key words: Al-based multi-layered composite, accumulative roll bonding, recrystallization annealing, Fe-based amorphous alloy reinforcing, mechanical properties