Abstract：The composite powders of carbon nanotubes(CNTs) and Al-5%Mg(mass fraction) were fabricated by high-energy ball milling and hot-pressing sintering were used to consolidate the ball-milled composite powders with different CNTs contents. The results show that a certain mass of CNTs can be homogeneously dispersed in the matrix through the high-energy ball milling, the most of CNTs are embedded in the Al matrix and the CNTs have a close bonding with the Al matrix. In addition, the CNTs can play the role of grain refining. When the CNTs content is increased to 3 %, the average grain size of the composite powder reaches the minimum value 63.6nm and then the CNTs content is further increased, the average grain size of the composite powder grows big. When the CNTs content reaches 2%, tensile strength and hardness of the composites reaches the maximum value, up to 42.39% in tensile strength and 36.5% in hardness, compared to the matrix. Fine grain strengthening and load transfer are proved to be the strengthening mechanism of the CNTs/Al composite.
陈亚光, 蔡晓兰, 王开军, 胡翠, 孙鸿鹏, 乐刚. 高能球磨法制备的CNTs/Al-5%Mg复合材料的力学性能及断裂特性[J]. 材料工程, 2014, 0(11): 55-61.
CHEN Ya-guang, CAI Xiao-lan, WANG Kai-jun, HU Cui, SUN Hong-peng, LE Gang. Mechanical Properties and Fracture Feature of CNTs/Al-5%Mg Composite Prepared by High-energy Ball Milling. Journal of Materials Engineering, 2014, 0(11): 55-61.
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