Improvement of mechanical properties of Sn-58Bi alloy with multi-walled carbon nanotubes

查看全文 作　　者：HE [1]Peng;Lü Xiao-[1]chun;LIN Tie-[1]song;LI Hai-[1]xin;AN [2]Jing;MA [3]Xin;FENG Ji-[1]cai;ZHANG [4]Yan;LI [4]Qi;QIAN Yi-[2]yu

机构地区：[1]State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology;[2]Department of Materials Science and Engineering,Shenzhen Graduate School,Harbin Institute of Technology;[3]Yik Shing Tat Industrial Company Limited;[4]CNano Technology (Beijing) Limited

出　　处：《中国有色金属学会会刊:英文版》索引2012年第22卷第S3期,共5页

基　　金：Projects(51105107,51021002,51275135)supported by the National Natural Science Foundation of China;Project(QC2011C044)supported by the Natural Science Foundation of Heilongjiang Province,China;Projects(HIT.BRET1.2010006,HIT.NSRIF.2010119,HIT.NSRIF.201135)supported by the Fundamental Research Funds for the Central Universities,China;Project(20112302130005)supported by the Specialized Research Fund for the Doctoral Program of Higher Education,China 摘　　要：Carbon nanotubes (CNTs) reinforced Sn-58Bi composites were successfully fabricated through ball-milling method and low temperature melting process.The influence of multi-walled carbon nanotubes (MWCNTs) on the mechanical strength and ductility of Sn-58Bi lead-free alloy was studied.The mechanical test results show that the bending strength of Sn-58Bi-0.03CNTs (mass fraction,%) composite is increased by 10.5% than that of the Sn-58Bi alloy,which can be attributed to the reduction of Sn-rich segregation and the grain refinement.The toughness of Sn-58Bi-0.03CNTs composite is increased by 48.9% than that of the matrix materials.It is indicated that the influence of CNTs on the strength of Sn-58Bi-xCNTs composite is insignificant.In addition,the fracture mechanism of CNTs reinforced Sn Bi composite was analyzed.The corresponding fracture surface comparison between the Sn-58Bi-0.03CNTs composite and the monolithic Sn-58Bi alloy was made to identify the influence of CNTs on the fracture behavior and the reinforcing effect of CNTs. 关键词：carbon NANOTUBES metal-matrix composites MECHANICAL properties FRACTURE mechanism

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Improvement of mechanical properties of Sn-58Bi alloy with multi-walled carbon nanotubes

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