采用卧式高能球磨法制备0%~2 %CNTs/Al5083(质量分数)复合材料,研究球磨时间和CNTs含量对复合材料性能的影响.采用扫描电镜(SEM)和透射电镜(TEM)对复合材料的形貌进行表征,测试复合材料的抗拉强度及硬度.结果表明:当球磨时间为1.5h时,CNTs可均匀分散在Al5083基体中;CNTs质量分数为1.5%时,CNTs/Al5083界面结合力最好,复合材料的抗拉强度和硬度分别为188.8MPa和136HV,比未加CNTs的Al5083合金基体分别提高了32.2%和36%.%Carbon nanotubes (CNTs,mass fraction of 0%-2%) reinforced Al5083 composites were fabricated by horizontal high-energy ball milling.The effects of ball milling time and CNTs contents on the properties of composite materials were studied.The micro morphology of CNTs/Al5083 composites was characterized by scanning electron microscopy(SEM) and transmission electron microscopy(TEM),the tensile strength and microhardness of the composites were tested.The results indicate that after high-energy ball milling for 1.5h,the carbon nanotubes are dispersed homogeneously in the Al5083 matrix,and good interfacial bonding strength between CNTs and Al5083 is obtained at the addition of 1.5% CNTs.Under these conditions,the tensile strength and microhardness of CNTs/ Al5083 composites are 188.8MPa and 136HV,respectively.Compared to Al5083 matrix without CNTs reinforcement,tensile strength and microhardness of CNTs/Al5083 composites are increased by 32.2 % and 36 %,respectively.
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