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Investigation of microstructure and mechanical properties of Al2O3 and granite-powder-reinforced Al7075 hybrid composite

  • Muthanna Kullachanda Poonacha , Thammaiah Gowda , Kuldeep Basavarajappa and Kamenahalli Puppanna Ravikumar
Published/Copyright: March 16, 2020
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 111 Issue 3

Abstract

In this study, the effect of adding granite powder and alumina to Al7075 for strength enhancement is discussed. Al7075-based composites were prepared by applying a stir-casting method. The microstructural analysis of the samples demonstrated that with an increase in the reinforcement percentage the grain size reduced. With the grain refinement, the hardness showed an increasing trend for 2 % and 4 % of Al2O3 for a constant percentage of granite powder (2 %) and then showed a decreasing trend. For 4 % of Al2O3 and 2 % of the granite powder, the tensile strength was increased by 33.6 % (183 MPa) and the hardness by 34.9 % (74.2 BHN). However, the corrosion resistance was decreased because of the presence of Fe2O3 in the granite powder.

Keywords: Al7075; Granite; Composite; Stir casting; Corrosion
∗ Correspondence address, Mr. Kuldeep B., Research Scholar, Department of Mechanical Engineering, Malnad College of Engineering, Visvesvaraya Technological University, Hassan-573201, Karnataka, India, Tel.: +91 8105734073, E-mail:

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Received: 2019-07-01
Accepted: 2019-09-20
Published Online: 2020-03-16
Published in Print: 2020-03-11

© 2020, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111872
Keywords for this article
Al7075; Granite; Composite; Stir casting; Corrosion

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. A new Board of Managing Editors for IJMR
  5. Original Contributions
  6. Carbon nanotube network as an electron pathway in nanocomposite films
  7. Optimization of bamboo mesoparticle/nylon 6 composite mechanical properties using a response surface methodology
  8. Thermodynamic description of the Eu–Ga system using substitutional solution and associate models
  9. Effects of minor additions of cerium, silicon and calcium on microstructure and mechanical properties of AZ91 magnesium alloy
  10. Localized electron microscopy analysis of steel corrosion processes in the presence of zinc phosphate flake-type particles
  11. The effect of pulse frequency on the microstructure and surface mechanical properties of composite coatings on the surface of AISI304
  12. Short Communications
  13. Facile preparation of single phase high-entropy oxide nanocrystalline powders by solution combustion synthesis
  14. Original Contributions
  15. Rapid synthesis of high-purity Al4SiC4 powder by microwave hybrid heating
  16. Investigation of microstructure and mechanical properties of Al2O3 and granite-powder-reinforced Al7075 hybrid composite
  17. Effect of annealing temperature on size and optical properties of CH3NH3PbI3 nanowires
  18. Chemical bioactivation of titanium surface for dental implants
  19. DGM News
  20. DGM News
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