Volume 37 Issue 1
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Article Navigation >  Journal of Aerospace Power  > 2022  >  37(1): 95-102
ZHOU Chaoxian, YI Xiaowei, CHEN Chen, CHEN Wei, RAN Gang, WANG Hong. Hot deformation behavior and hot pressing process optimization of TiB2/7050 particle reinforced aluminum matrix composites[J]. Journal of Aerospace Power, 2022, 37(1): 95-102. doi: 10.13224/j.cnki.jasp.20210071
Citation: ZHOU Chaoxian, YI Xiaowei, CHEN Chen, CHEN Wei, RAN Gang, WANG Hong. Hot deformation behavior and hot pressing process optimization of TiB2/7050 particle reinforced aluminum matrix composites[J]. Journal of Aerospace Power, 2022, 37(1): 95-102. doi: 10.13224/j.cnki.jasp.20210071
shu

Hot deformation behavior and hot pressing process optimization of TiB2/7050 particle reinforced aluminum matrix composites

doi: 10.13224/j.cnki.jasp.20210071
  • 1.

    Commercial Engine Company Limited, Aero Engine Corporation of China，Shanghai 200241，China

  • 2.

    School of Material Science and Engineering，Northwestern Polytechnical University，Xi'an 710072，China

  • Received Date: 2021-02-17
  • Publish Date: 2022-01-28
    Abstract
  • Analysis on the hot deformation behavior of TiB2/7050 particle-reinforced aluminum-matrix composite and the influence of process parameters is significant for microstructure design and obtaining ideal performance after hot deformation.Based on this，related research on TiB2/7050 particle-reinforced aluminum-matrix composites was carried out.Hot compression experiments were carried out on Gleeble-3500 thermal simulator to study the hot deformation behavior of TiB2/7050 particle-reinforced aluminum-matrix composites at deformation temperature of 300-450 ℃ and strain rate of 0.001-1 s-1，and the hyperbolic sine constitutive equation of the material was established.According to the dynamic material model，the processing map was calculated，and the processing window of the material was optimized.The mechanical properties and microstructure of the original extruded billet and the optimized hot pressed billet were analyzed.Results showed that，comparing these two processes，the strength index of hot pressed parts was slightly improved，but the plasticity was greatly improved，and the elongation after long transverse fracture was increased by 400%；the grain size of hot pressed parts was smaller and there was no obvious preferred orientation；the mechanism of tensile fracture was quasi cleavage fracture.The dimples of fracture surface of the hot pressed parts were deeper and the tearing edges were larger，indicating the longer duration of plastic tearing.

     

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