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      Thermal stability and microhardness of Cu-10vol.%Al2O3nanocomposite produced by high energy mechanical milling

      Mukhtar, Aamir; Zhang, Deliang; Kong, Charlie; Munroe, Paul
      DOI
       10.1088/1742-6596/144/1/012082
      Link
       iopscience.iop.org
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      Citation
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      Mukhtar, A., Zhang, D., Kong, C. & Munroe, P. (2010). Thermal stability and microhardness of Cu-10vol.%Al2O3nanocomposite produced by high energy mechanical milling. Journal of Physics: Conference, 144(1), 012082.
      Permanent Research Commons link: https://hdl.handle.net/10289/4104
      Abstract
      Cu-10vol.%Al₂O₃ nanocomposite powders were produced using two high energy milling routes and heat treated at 150, 300, 400 and 500°C for 1 hour, respectively, to determine the thermal stability of the microstructure and the micohardness change of the materials as a function of the annealing temperature. Annealing of the as-milled powders at 150°C caused recovery and recrystallisation that leads to significant decrease in dislocation density and slight decrease of microhardness. Increasing the annealing temperature to 400°C causes slight coarsening of the Cu grains and corresponding slight decrease of microhardness. Further increasing the annealing temperature to 500°C causes significant coarsening of the Cu grains and cause significant decrease in microhardness. The effects of different factors on the thermal stability and micohardness change of the Cu- Al₂O₃ are discussed.
      Date
      2010
      Type
      Journal Article
      Publisher
      IOPScience
      Collections
      • Science and Engineering Papers [3122]
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