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采用高能球磨与搅拌铸造相结合的方法制备艾了纳米SiC_p/ZL101铝基复合材料。利用干磨式高能球磨设备制备SiC_p/Al复合颗粒,获得纳米SiC弥散分布的近球状SiC_p/Al复合颗粒,其直径在0.5~1.5mm之间。随后通过搅拌铸造方法将复合颗粒加入Al-Si合金熔体重熔稀释,制备出SiC_p含量为0.5%的纳米SiC_p/ZL101复合材料。在100 MPa成形压力下,挤压铸造复合材料的铸态抗拉强度和伸长率分别为233.3 MPa和5.27%,较同等条件下基体合金分别提高了10.94%和2.73%。
A high-energy ball mill and stirring casting method was used to prepare AI nano SiC_p / ZL101 aluminum matrix composites. SiC_p / Al composite particles were prepared by dry grinding high-energy ball milling equipment, and the near-spherical SiC_p / Al composite particles with nano-SiC dispersion were obtained. The diameter of the particles was between 0.5 and 1.5mm. Subsequently, the composite particles were added to the Al-Si alloy melt for remelting and dilution by a stirring casting method to prepare a nano SiC_p / ZL101 composite with a SiC_p content of 0.5%. Under the pressure of 100 MPa, the as-cast tensile strength and elongation of the die-cast composite are 233.3 MPa and 5.27%, respectively, which are 10.94% and 2.73% higher than those of the base alloy under the same conditions.