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Chinese Journal of High Pressure Physics  > 2010  >  24(6): 461-466 .
LI Yan, GU Qian-Qian, QIU Dong-Hua, PENG Dong-Jin, GUAN Qing-Feng. Texture and Structural Defect Evolution of Pure Nickel Subjected to High-Current Pulse Electron Beam Irradiation[J]. Chinese Journal of High Pressure Physics, 2010, 24(6): 461-466 . doi: 10.11858/gywlxb.2010.06.010
Citation: LI Yan, GU Qian-Qian, QIU Dong-Hua, PENG Dong-Jin, GUAN Qing-Feng. Texture and Structural Defect Evolution of Pure Nickel Subjected to High-Current Pulse Electron Beam Irradiation[J]. Chinese Journal of High Pressure Physics, 2010, 24(6): 461-466 . doi: 10.11858/gywlxb.2010.06.010
shu

Texture and Structural Defect Evolution of Pure Nickel Subjected to High-Current Pulse Electron Beam Irradiation

doi: 10.11858/gywlxb.2010.06.010
  • 1.

    School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China;

  • 2.

    State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China

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  • Corresponding author: GUAN Qing-Feng
  • Received Date: 02 Nov 2009
  • Rev Recd Date: 22 Jun 2010
  • Publish Date: 15 Dec 2010
    Abstract
  • The specimens of polycrystalline nickel were irradiated with high-current pulsed electron beam (HCPEB). Surface textures and structural defects of irradiated nickel were investigated by using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD results show that the characteristics of preferential orientation {111} and {200} are presented after HCPEB treatments. While the treating pulses were chosen as 1 and 5 times, the surface microstructure changes after irradiation was analyzed by TEM. Within the surface layer the (111) [112] type of wave shear bands are formed in the interior of grains. Large numbers of (200) [110] types of micro-bands parallel each other embed in the wave bands. After 10 pulses, the deformation structure changed prominently. Besides the wave bands, the number of deformation twins increase evidently. The formation of these deformation structures has a significant effect both on the evolution of surface textures and grains refinement. It is suggested that HCPEB technique is becoming an effective approach to fabricate surface nanocrystalline materials.

     

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