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    • Effects of Cooling Rate on the Microstructure and Properties of Cu-Cr Alloy

    • Tan Dunqiang1

      1 ,

      Jiang Huimin1

      1 ,

      Xiao Dongfei1

      1 ,

      Yu Fangxin1

      1 ,

      Chen Wei2

      2 ,

      Zhang Quanxiao2

      2
    • Issue 8, Pages: 645-646(2007)   

      Published: 2007

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  • Tan Dunqiang1, Jiang Huimin1, Xiao Dongfei1, et al. Effects of Cooling Rate on the Microstructure and Properties of Cu-Cr Alloy. [J]. Special Casting & Nonferrous Alloys (8):645-646(2007) DOI:
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    Abstract

    The cooling rate of Cu-12.5Cr powder with various diameters prepared by gas atomization process was calculated by the convection heat-transfer theory. The effects of cooling rate on morphology and distribution of Cr phase in the alloy, and on hardness and lattice constant have been investigated by OM(optical microscope), micro-hardness meter and XRD (X-ray diffraction). The results reveal that the hardness of the Cu-12.5Cr powder is increased by about 100%, and the grain size of Cu phase in the alloy is decreased while the grain size of Cr phase is firstly reduced then increased with the increase of cooling rate from 104 K/s to 105 K/s.

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    Keywords

    Cu-Cr Alloy; Cooling Rate; Solid Solubility; Lattice Constant

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