RESEARCH PAPER |
|
|
|
|
|
Influence of Hot Rolling on Microstructure and Properties of CNTs/Al Composites Fabricated by Friction Stir Processing |
XIA Chun, WANG Yunhai, HUANG Chunping, XING Li, XIA Xing, XU Dong
|
National Defence Key Disciplines Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063 |
|
|
Abstract The effects of hot rolling on the microstructure and properties of CNTs/Al composites fabricated by friction stir processing (FSP) were investigated. The results indicated that hot rolling was beneficial to the orientation of CNTs, and Al4C3 phase was formed in the interface of CNTs/Al. The matrix grain was elongated along the rolling direction at the same time. The tensile strength and electrical conductivity of the composites were significantly improved, and the coefficient of thermal expansion was reduced along the rolling direction, attributed to the changes in the orientation of CNTs and the enhancement of interfacial binding force caused by the interfacial reaction.
|
Published: 25 September 2017
Online: 2018-05-08
|
|
|
|
1 Ma Z Y. Friction stir processing technology: A review[J]. Metall Mater Trans A, 2008,39(3):642. 2 McNelley R T. Friction stir processing(FSP): Refining microstructures and improving properties [J]. Revista De Metalurgia, 2011,46(1):149. 3 Lim D K, Shibayanagi T, Gerlich A P. Synthesis of multi-walled CNT reinforced aluminum alloy composite via friction stir processing [J]. Mater Sci Eng A, 2009,507(1-2):194. 4 Zhao X, Ke L M, Xu W P, et al. Carbon nanotubes reinforced aluminum matrix composites by friction stir processing [J]. Acta Mater Compos Sin, 2011,28(2):185(in Chinese). 赵霞, 柯黎明, 徐卫平, 等. 搅拌摩擦加工法制备碳纳米管增强铝基复合材料 [J]. 复合材料学报, 2011,28(2):185. 5 Liu Z Y, Xiao B L, Wang W G, et al. Singly dispersed carbon nanotube/aluminum composites fabricated by powder metallurgy combined with friction stir processing [J]. Carbon, 2012,50(5):1843. 6 Shi N, Nie J H, Zhang Y F, et al. Mechanical and physical properties of carbon nanotube reinforeed aluminum matrix composites [J]. J University of Science and Technology Beijing, 2013,35(1):104(in Chinese). 史娜, 聂俊辉, 张亚丰, 等. 碳纳米管增强铝基复合材料的力学和物理性能 [J]. 北京科技大学学报, 2013,35(1):104. 7 Esawi A M K, Borady M A E. Carbon nanotube reinforced alumi-nium strip [J]. Compos Sci Technol, 2008,68(2):486. 8 Choi H J, Min B H, Shin J H, et al. Strengthening in nanostructured 2024 aluminum alloy and its composites containing carbon nanotubes [J]. Composites Part A: Appl Sci Manufacturing, 2011,42(10):1483. 9 Liu Z Y, Xiao B L, Wang W G, et al. Developing high-performance aluminum matrix composites with directionally aligned carbon nanotubes by combining friction stir processing and subsequent rolling [J]. Carbon, 2013,62(5):35. 10George R, Kashyap K T, Rahul R, et al. Strengthening in carbon nanotube/aluminium (CNT/Al) composites [J]. Scr Mater, 2005,53(10):1159. 11Li C D, Wang X J, Liu W Q, et al. Microstructure and strengthening mechanism of carbon nanotubes rein-forced magnesium matrix composite [J]. Mater Sci Eng A, 2014,597(8):264. 12Kuzumaki T, Hayashi T, Miyazawa K, et al. Processing of ductile carbon nanotube/C60 composite [J]. Mater Trans Jim, 1998,39(5):574. 13Bakshi S R, Agarwal A. An analysis of the factors affecting strengthening in carbon nanotube reinforced aluminum composites [J]. Carbon, 2011,49(2):533. 14Thess A, Lee R, Nikolaev P, et al. Crystalline ropes of metallic carbon nanotubes [J]. Science, 1996,273(5274):483. 15Yang D J, Wang S G, Zhang Q, et al. Thermal and electrical transport in multi-walled carbon nanotubes [J]. Phys Lett A, 2004,329(3):207. 16Tang Y, Cong H, Zhong R, et al. Thermal expansion of a compo-site of single-walled carbon nanotubes and nano-crystalline aluminum [J]. Carbon, 2004,42(15):3260. |
|
|
|