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Microstructure, mechanical, and high-stress abrasive wear behaviour of as-cast and heat-treated Al–Si–SiCp composite

  • Raj Kumar Singh , Amit Telang and Satyabrata Das
Published/Copyright: January 30, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 2

Abstract

The microstructure, mechanical, and high-stress abrasive wear of as-cast and heat-treated LM25-SiC composites were compared with those of a matrix alloy and a low-cost hypereutectic alloy (LM30). The microstructure of the composite exhibits uniformly dispersed SiC particles and good interfacial bonding between the SiC particles and the matrix. Heat treatment caused the needle-shaped silicon to become spherical and improved the homogeneity of its dispersion in the matrix. The hardness, ultimate tensile strength, yield strength, and wear resistance of the materials were improved, but the elongation was reduced as a result of the heat treatment. The wear rate and friction coefficient of the materials decreased as the sliding distance increased for both the as-cast and heat-treated samples. The wear surface morphology and wear debris analyses were performed by using high-resolution field emission scanning electron microscopy.

Keywords: Aluminium alloys; Abrasive wear; Heat treatment; Mechanical properties; SiC
*Correspondence address, Mr. Raj Kumar Singh, Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal – 462003, India, Tel.: +91-8878762476, E-mail:

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Received: 2018-06-01
Accepted: 2018-08-10
Published Online: 2019-01-30
Published in Print: 2019-02-12

© 2019, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111727
Keywords for this article
Aluminium alloys; Abrasive wear; Heat treatment; Mechanical properties; SiC

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Nanoindentation analysis methods examined with finite element simulations
  5. Experimental investigation of gas/matte/spinel equilibria in the Cu–Fe–O–S system at 1250°C and P(SO2) = 0.25 atm
  6. Replacing martensite with nanobainite in moderately alloyed carburised steel for better wear performance
  7. Microstructure, hardness and wear behaviour of NbC reinforced AA7075 matrix composites fabricated by friction stir processing
  8. Microstructure, mechanical, and high-stress abrasive wear behaviour of as-cast and heat-treated Al–Si–SiCp composite
  9. Mechanical and morphological properties of bamboo mesoparticle/nylon 6 composites
  10. Particle and microstructural characteristics in the coarse-grained heat-affected zone of Al–Ti–Ca complex deoxidized steels
  11. Corrosion behavior of stir-cast Al–TiB2 metal matrix composites
  12. Correlation between anodization variables and surface properties of titania nanotube arrays for dye-sensitized solar cells
  13. Wetting and sealing of the interface between silicate glass and copper
  14. Short Communications
  15. Investigation of MWCNTs addition on mechanical properties of cordierite glass-ceramic composites
  16. DGM News
  17. DGM News
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