LI Mei-xia, LUO Ji, GUO Zhi-meng, FANG Zhe-cheng, JIANG Bing. Nanometer Al2O3-Cu composites with high plasticity and strength[J]. Chinese Journal of Engineering, 2010, 32(2): 230-233,255. DOI: 10.13374/j.issn1001-053x.2010.02.014
Citation: LI Mei-xia, LUO Ji, GUO Zhi-meng, FANG Zhe-cheng, JIANG Bing. Nanometer Al2O3-Cu composites with high plasticity and strength[J]. Chinese Journal of Engineering, 2010, 32(2): 230-233,255. DOI: 10.13374/j.issn1001-053x.2010.02.014

Nanometer Al2O3-Cu composites with high plasticity and strength

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  • Received Date: April 22, 2009
  • Available Online: August 06, 2021
  • Using water-atomized Cu-Al alloy powder as raw materials,Al2O3 dispersion-strengthened copper composite materials were fabricated by the internal oxidation method.The obtained composite materials were comprehensively characterized by field emission scanning electron microscopy (FE-SEM) and X-ray diffraction analysis.The results show that γ-Al2O3 nano-particles with a mean size of 6 nm are uniformly distributed in the matrix and the space distance between particles is about 30 to 50 nm.The conductivity of the hot extruded bars is 87% IACS and the softening point is 850℃.Without any intermediate heat treatment,copper wires of Ф1 mm in diameter were produced by direct cold drawing from the dispersion-strengthened copper bars of Ф25 mm in diameter.The tensile strength of these copper wires is 680 MPa.
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