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  4. 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

材料工程, 2014, (11): 55-61. doi: 10.11868/j.issn.1001-4381.2014.11.010

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

陈亚光 1, , 蔡晓兰 2, , 王开军 3, , 胡翠 4, , 孙鸿鹏 5, , 乐刚 6,

1.昆明理工大学 冶金与能源工程学院,昆明,650093

2.昆明理工大学 冶金与能源工程学院,昆明,650093

3.昆明理工大学 冶金与能源工程学院,昆明,650093

4.昆明理工大学 冶金与能源工程学院,昆明,650093

5.昆明理工大学 冶金与能源工程学院,昆明,650093

6.昆明理工大学 冶金与能源工程学院,昆明,650093

基金项目:   云南省应用基础研究计划项目(KKS0201152018)  

关键词： 高能球磨 , 铝基复合材料 , 碳纳米管 , 断口 , 强化机理

Mechanical Properties and Fracture Feature of CNTs/Al-5％Mg Composite Prepared by High-energy Ball Milling

Keywords： high-energy ball milling , Al matrix composite , carbon nanotubes (CNTs) , fracture , mechanism

采用高能球磨法制备了不同质量分数碳纳米管(CNTs)与Al-5％ Mg(质量分数)粉末的复合粉末,用热压烧结工艺制备了CNTs/Al-5％ Mg复合材料.结果表明:高能球磨法可以将CNTs均匀的分散到基体中,并与其产生良好结合;CNTs具有细化复合粉末晶粒尺寸的作用,当CNTs含量为3％时,复合粉末的平均晶粒尺寸达到最小值为63.6nm,继续增加CNTs的含量,复合粉末平均晶粒尺寸增大;当CNTs含量为2％时,复合材料的抗拉强度和硬度达到最大值,与基体材料相比分别提高了42.39％和36.5％;CNTs/Al-5％Mg复合材料的强化机制为细晶强化和载荷传递.

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