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Development and Evaluation of Mechanical properties of subzero treated Al 6061-ZrO2 MMC

  • Unique Paper ID: 163427
  • Volume: 10
  • Issue: 11
  • PageNo: 2047-2054
  • Abstract:
  • In the present study, Al6061-ZrO2 metal matrix composites were developed by making use of the stir casting technique. The dispersed particle size was from 33 microns to 44 microns. The particles were added to the base material from 2 wt% to 8 in an increment of 2 wt% each. ZrO2 particles were introduced to the matrix melt, the stirrer was used to create a vortex, which enhances the particle distribution into the matrix. The melt temperature was kept between 800 to 850°c. These composites were subjected to subzero treatment (Cryotreatment) i.e., the composite specimens were subjected to a freezing temperature of -196°c in liquid nitrogen gas (N2). The composites developed have a homogeneous distribution of reinforcement in the matrix alloy, with significant grain refinement and residual porosity, according to microstructural investigations. When compared to the matrix, mechanical characteristics show that the addition of ZrO2 particles improved strength and hardness while reducing ductility slightly.
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Cite This Article

  • ISSN: 2349-6002
  • Volume: 10
  • Issue: 11
  • PageNo: 2047-2054

Development and Evaluation of Mechanical properties of subzero treated Al 6061-ZrO2 MMC

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