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      Mechanical behaviour of ultrafine grained Cu and Cu-(2.5 and 5) vol.%Al₂O₃ composites produced by powder compact forging

      Mukhtar, Aamir; Zhang, Deliang
      DOI
       10.4028/www.scientific.net/AMR.275.170
      Link
       www.scientific.net
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      Citation
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      Mukhta, A. & Zhang, D. (2011). Mechanical behaviour of ultrafine grained Cu and Cu-(2.5 and 5) vol.%Al₂O₃ composites produced by powder compact forging. Advanced Materials Research, 275, 170-173.
      Permanent Research Commons link: https://hdl.handle.net/10289/5627
      Abstract
      Nanostructured Cu-(2.5 and 5) vol.%Al₂O₃ composite powders were produced from a mixture of Cu powder and Al₂O₃ nanopowder using high energy mechanical milling, and then compacted by hot pressing. The Cu and Cu- Al₂O₃ composite powder compacts were then forged into disks at temperatures in the range of 500-800°C to consolidate the Cu and Cu- Al₂O₃ composite powders. Tensile testing of the specimens cut from the forged disks showed that the Cu forged disk had a good ductility (plastic strain to fracture: ~15%) and high yield strength of 320 MPa, and the Cu-(2.5 and 5)vol.%Al₂O₃ composite forged disks had a high fracture strength in range of 530-600 MPa, but low ductility.
      Date
      2011
      Type
      Journal Article
      Publisher
      Trans Tech Publications
      Collections
      • Science and Engineering Papers [3071]
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