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Microstructure and mechanical properties of carbon nanotube-reinforced ZK61 magnesium alloy composites prepared by spark plasma sintering

  • Lin-Zhi Wang and Wen-Hou Wei
Published/Copyright: February 22, 2017
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 108 Issue 3

Abstract

Monolithic ZK61 magnesium alloy and carbon nanotube (CNT)-reinforced ZK61 matrix composites were successfully prepared via spark plasma sintering. The effects of the sintering temperature on the microstructure and mechanical properties of monolithic ZK61 were studied, and the microstructural and mechanical properties of CNT/ZK61 composites were investigated as functions of the CNT content. The grain sizes of the CNT/ZK61 composites are smaller and more homogeneous than those of the monolithic ZK61 powder, and the width of the grain boundary is greater than those present in ZK61. The Vickers hardness and compressive yield strength of the CNT/ZK61 composites are observed to initially increase with increasing CNT content, reaching a maximum at 1.5 wt.% CNT, however, these values begin to decrease as the content increases further. We believe that this is owing to the grain refinement effect and load transfer mechanism of the CNT.

Keywords: Magnesium alloy composites; Carbon nanotubes; Microstructural characteristics; Mechanical properties; Spark plasma sintering
*Correspondence address, Wen-Hou Wei, Chongqing Key Laboratory of Additive Manufacturing Technology and Systems, Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China, Tel.: +862365935779, Fax: +862365935573, E-mail:

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Received: 2016-10-26
Accepted: 2016-12-19
Published Online: 2017-02-22
Published in Print: 2017-03-13

© 2017, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111474
Keywords for this article
Magnesium alloy composites; Carbon nanotubes; Microstructural characteristics; Mechanical properties; Spark plasma sintering

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Effect of grain defects on the mechanical behavior of nickel-based single crystal superalloy
  5. Evolution of mechanical properties and microstructure of differently cryogenically treated hot die steel AISI–H13
  6. Microstructure and mechanical properties of nickel particle reinforced magnesium composite: impact of reinforcement introduction method
  7. Microstructure and mechanical properties of carbon nanotube-reinforced ZK61 magnesium alloy composites prepared by spark plasma sintering
  8. Solidification microstructures of Cu–Zr–Al–Y BMG produced by casting in a wedge-shaped copper mold
  9. Energy spectrum analysis of anodic oxidation film surface–interface on 7475 aluminum alloy after salt spray corrosion
  10. Fabrication of Ni/SiC composite powder by mechanical alloying and its effects on properties of copper matrix composites
  11. The sintering behavior and physical properties of Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics
  12. The effect of heating rate on the microstructural breakdown required for thixoformability
  13. Nano-particles in powder injection molding of an aluminum matrix composite: Rheological behavior, production and properties
  14. Short Communications
  15. Preparation of vaterite CaCO3 microspheres by fast precipitation method
  16. Slag corrosion resistance of Al4SiC4
  17. DGM News
  18. DGM News
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