Strengthening and toughening mechanisms of CNTs/Mg-6Zn composites via friction stir processing

被引：80
作者：
Huang, Yongxian [1 ]
Li, Junchen [1 ]
Wan, Long [1 ]
Meng, Xiangchen [1 ]
Xie, Yuming [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 732卷
基金：
中国国家自然科学基金;
关键词：
Mg matrix composites; Carbon nanotubes; Friction stir processing; Strengthening mechanisms; Mechanical properties; CARBON NANOTUBE/ALUMINUM COMPOSITES; MAGNESIUM MATRIX COMPOSITE; Y-ZR ALLOYS; FRACTURE-BEHAVIOR; NANOTUBES; CNTS; MICROSTRUCTURE; DEFORMATION; FABRICATION; NANOCOMPOSITES;
D O I：
10.1016/j.msea.2018.07.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High strength and toughness carbon nanotubes (CNTs) reinforced Mg-6Zn composites were fabricated by stirring casting integrated with friction stir processing (FSP). The strengthening mechanisms of the CNTs/Mg-6Zn composites were expounded by the characterization of the microstructural evolution and the mechanical properties. The singly dispersed CNTs formed compact bonding with the matrix, which contributed to the grain refinement and the mechanical properties enhancement of the Mg-6Zn matrix. The strengthening contributions are based on the grain refinement, load transfer and Orowan looping mechanisms. The yield strength, ultimate tensile strength, elongation of the FSPed CNTs/Mg-6Zn composites reached 171 MPa, 330 MPa and 15%, which were 144%, 156% and 87% higher than those of the as-cast pristine Mg-6Zn alloy. The fabrication route is proved to be effective to develop innovative CNTs-reinforced metal matrix composites with exceptional mechanical properties.
引用
收藏
页码：205 / 211
页数：7
相关论文
共 32 条
[1]   Corrosion and passivation of magnesium alloys [J].
Cao, Fuyong ;
Song, Guang-Ling ;
Atrens, Andrej .
CORROSION SCIENCE, 2016, 111 :835-845
[2]   Design of an efficient flake powder metallurgy route to fabricate CNT/6061Al composites [J].
Chen, Malin ;
Fan, Genlian ;
Tan, Zhanqiu ;
Xiong, Dingbang ;
Guo, Qiang ;
Su, Yishi ;
Zhang, Jie ;
Li, Zhiqiang ;
Naito, Makio ;
Zhang, Di .
MATERIALS & DESIGN, 2018, 142 :288-296
[3]   Characterization of AZ91/alumina nanocomposite produced by FSP [J].
Faraji, Ghader ;
Asadi, Parviz .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (06) :2431-2440
[4]   Ductility improvement and fatigue studies in Mg-CNT nanocomposites [J].
Goh, C. S. ;
Wei, J. ;
Lee, L. C. ;
Gupta, M. .
COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (06) :1432-1439
[5]   The influence of CNTs on the microstructure and ductility of CNT/Mg composites [J].
Han, G. Q. ;
Shen, J. H. ;
Ye, X. X. ;
Chen, B. ;
Imai, H. ;
Kondoh, K. ;
Du, W. B. .
MATERIALS LETTERS, 2016, 181 :300-304
[6]   Synthesis of CNT-reinforced AZ31 magnesium alloy composites with uniformly distributed CNTs [J].
Han, Guoqiang ;
Wang, Zhaohui ;
Liu, Ke ;
Li, Shubo ;
Du, Xian ;
Du, Wenbo .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 628 :350-357
[7]   Fabrication of Al5083 surface composites reinforced by CNTs and cerium oxide nano particles via friction stir processing [J].
Hosseini, S. A. ;
Ranjbar, Khalil ;
Dehmolaei, R. ;
Amirani, A. R. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 622 :725-733
[8]   Dynamic recrystallization and mechanical properties of friction stir processed Mg-Zn-Y-Zr alloys [J].
Huang, Yongxian ;
Wang, Yaobin ;
Meng, Xiangchen ;
Wan, Long ;
Cao, Jian ;
Zhou, Li ;
Feng, Jicai .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2017, 249 :331-338
[9]   Microstructure and surface mechanical property of AZ31 Mg/SiCp surface composite fabricated by Direct Friction Stir Processing [J].
Huang, Yongxian ;
Wang, Tianhao ;
Guo, Weiqiang ;
Wan, Long ;
Lv, Shixiong .
MATERIALS & DESIGN, 2014, 59 :274-278
[10]   Copper matrix composites reinforced by aligned carbon nanotubes: Mechanical and tribological properties [J].
Huang, Zixin ;
Zheng, Zhong ;
Zhao, Shan ;
Dong, Shijie ;
Luo, Ping ;
Chen, Lie .
MATERIALS & DESIGN, 2017, 133 :570-578
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