Acta Metallurgica Sinica (English Letters) ›› 2023, Vol. 36 ›› Issue (5): 814-826.DOI: 10.1007/s40195-022-01499-z

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Anisotropy of the Wear Behavior for Carbon Nanotube-Reinforced 6061Al Composites

X.N. Li1,2, J.F. Zhang2, W.H. Xue2, K. Ma2, P.Y. Li2, Z.Y. Liu2(), B.L. Xiao2(), D.R. Ni2, Q.Z. Wang2, D. Wang2, Z.Y. Ma2   

  1. 1School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
    2Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
  • Received:2022-08-01 Revised:2022-09-16 Accepted:2022-09-29 Online:2023-01-19 Published:2023-01-19
  • Contact: Z.Y. Liu, B.L. Xiao

Abstract:

Carbon nanotube (CNT)-reinforced 6061Al (CNT/6061Al) composites with directionally aligned CNT were fabricated, and their wear behavior was investigated. The results indicate that the wear properties of CNT/6061Al composites exhibited a significant anisotropy. A certain CNT concentrations (1 wt% and 2 wt%) could effectively improve the wear resistance of CNT/6061Al composites along the CNT circumferential and CNT radial directions for the load transfer, grain refinement and self-lubrication effect of CNT. The Brass {011} < 211 > and {112} < 110 > textures inhibited the load transfer effect of CNT along the CNT radial direction, resulting in a better wear resistance along CNT circumferential direction than CNT radial direction. Along the CNT axial direction, the weak deformability of composites caused by the intensifying < 111 > fiber texture was the main reasons for the poor wear resistance of CNT/6061Al composites with increasing CNT concentration.

Key words: Carbon nanotube, Metal matrix composite, Wear, Anisotropy