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<p>The impact of thermomechanical processing on the microstructure, mechanical properties, and electromagnetic shielding effectiveness of Cu-5Fe-0.10Ce alloys has been investigated. The findings reveal that the alloy processed through “homogenization annealing-82% hot rolling-66.7% cold rolling-6&#xa0;h intercritical annealing at 450°C-50% cold rolling-1&#xa0;h isochronous aging at 250 to 550°C” demonstrates superior comprehensive properties. Compared to the alloy without homogenization annealing treatment, this alloy’s tensile strength, electrical conductivity, and shielding effectiveness have increased by approximately 30-41 MPa, 10.4-13.5% IACS, and 16-27 dB, respectively. Homogenization annealing refines and uniformly distributes the primary Fe phases. Throughout this process, nanoscale α-Fe phases continuously precipitate from the Cu matrix. The refinement of these Fe phases diminishes their resistance to deformation, facilitating fibrillation during processing. Intercritical annealing encourages the precipitation of Fe atoms that were previously solid-solved in the Cu matrix, resulting in a high density of nanoscale Fe phases. This phenomenon is mainly due to the excellent performance exhibited by alloys subjected to homogenization annealing and 6-hour intermediate annealing.</p>

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Exploration of Processing Technology and Analysis of Electromagnetic Shielding Mechanism for Cu-5Fe-0.10Ce Alloy

  • 期刊论文

  • 发表日期：

    2025年9月11日

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  • Yan Peng,
  • Xin Luo,
  • Qichao Hu,
  • Xianglong Xu,
  • Dawei Yuan,
  • Bin Yang

摘要

The impact of thermomechanical processing on the microstructure, mechanical properties, and electromagnetic shielding effectiveness of Cu-5Fe-0.10Ce alloys has been investigated. The findings reveal that the alloy processed through “homogenization annealing-82% hot rolling-66.7% cold rolling-6 h intercritical annealing at 450°C-50% cold rolling-1 h isochronous aging at 250 to 550°C” demonstrates superior comprehensive properties. Compared to the alloy without homogenization annealing treatment, this alloy’s tensile strength, electrical conductivity, and shielding effectiveness have increased by approximately 30-41 MPa, 10.4-13.5% IACS, and 16-27 dB, respectively. Homogenization annealing refines and uniformly distributes the primary Fe phases. Throughout this process, nanoscale α-Fe phases continuously precipitate from the Cu matrix. The refinement of these Fe phases diminishes their resistance to deformation, facilitating fibrillation during processing. Intercritical annealing encourages the precipitation of Fe atoms that were previously solid-solved in the Cu matrix, resulting in a high density of nanoscale Fe phases. This phenomenon is mainly due to the excellent performance exhibited by alloys subjected to homogenization annealing and 6-hour intermediate annealing.