TiC和单壁碳纳米管协同增强6061铝合金组织和性能研究  

Study on the microstructure and properties of 6061 aluminum alloy reinforced by TiC and single-walled carbon nanotubes in synergy

作　　者：吴满意 陈文琳[1] 陈浩 刘爱军[1,2] WU Manyi;CHEN Wenlin;CHEN Hao;LIU Aijun(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;Anhui Powder Metallurgy Engineering Technology Research Center,Hefei 230009,Anhui,China)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009 [2]安徽省粉末冶金工程技术研究中心,安徽合肥230009

出　　处：《金属加工（热加工）》2024年第8期93-97,共5页MW Metal Forming

摘　　要：采用高能球磨和真空热压烧结制备单壁碳纳米管/TiC/6061铝基复合材料,研究不同TiC含量对6061铝合金组织和力学性能的影响。结果表明:随着TiC含量的增加,铝基复合材料的硬度增加,而抗拉强度先提高后降低,当TiC含量(质量分数)为4%时,复合材料的晶粒尺寸最小,其综合性能最优,抗拉强度为196.4MPa,硬度为81.7HV0.1。铝基复合材料主要的强化机制是弥散强化和第二相强化,第二相主要有单壁碳纳米管(SWCNTs)和TiC。Single walled carbon nanotubes/TiC/6061 aluminum matrix composites were prepared by high-energy ball milling and vacuum hot pressing sintering,and the effect of different TiC contents on the microstructure and mechanical properties of 6061 aluminum alloy was studied.The results show that with the increase of TiC content,the hardness of aluminum based composites increases,while the tensile strength first increases and then decreases.When the mass fraction of TiC is 4%,the grain size of the composite material is the smallest,and its comprehensive performance is the best.The tensile strength is 196.4MPa,and the hardness value is 81.7HV0.1.The main strengthening mechanisms are dispersion strengthening and second phase strengthening,with the second phase mainly consisting of single-walled carbon nanotubes and TiC.

关 键 词：TIC 单壁碳纳米管 力学性能 粉末冶金 

分 类 号：TB333[一般工业技术—材料科学与工程]