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<p>In this present study, annealing treatment (850&#xa0;°C, 4&#xa0;h) was intentionally conducted to precisely tailor the dual-phase substructure of immiscible Cu-20Fe alloy. On this basis, a multi-level hierarchical microstructure is obtained and constructed, namely with considerable Cu-rich phases being the bimodal size precipitated in primary Fe-rich phase and abundant <i>α</i>-Fe particles formed in matrix. Because of this, the ultimate tensile strength (UTS), yield strength (YS) and elongation (EL) could be simultaneously enhanced from 358, 231&#xa0;MPa and 25.4% to 406, 305&#xa0;MPa and 30.9%, specifically increased by 13.4, 32 and 22%. Meanwhile, along with improvement in electrical conductivity from 30.5&#xa0;%IACS to 48.6&#xa0;%IACS, the saturation magnetization (Ms) enhances from 24.6 to 28.5&#xa0;emu g<sup>−1</sup> and the coercivity (Hc) barely changes being 21.6 Oe and 22.2 Oe, respectively. Given that, it is suggested that the electromagnetic compatibility of Cu-20Fe alloy could be effectively enhanced. This present study could provide an effective and feasible strategy for enhancing the electromagnetic compatibility of Cu-Fe alloy by optimizing the dual-phase substructure via annealing treatment through solid-state phase transformation.</p>

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Enhancing Electromagnetic Compatibility of Immiscible Cu-Fe Alloy by Constructing Hierarchical Microstructure through Annealing Treatment

  • 期刊论文

  • 发表日期：

    2026年8月5日

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  • Jianwen Lei,
  • Zhaorun Li,
  • Xingxuan Zhao,
  • Jiankun Jing,
  • Shichao Liu,
  • Songsong Xu,
  • Xiaoxiang Wu,
  • Jinchuan Jie,
  • Zhongkai Guo

摘要

In this present study, annealing treatment (850 °C, 4 h) was intentionally conducted to precisely tailor the dual-phase substructure of immiscible Cu-20Fe alloy. On this basis, a multi-level hierarchical microstructure is obtained and constructed, namely with considerable Cu-rich phases being the bimodal size precipitated in primary Fe-rich phase and abundant α-Fe particles formed in matrix. Because of this, the ultimate tensile strength (UTS), yield strength (YS) and elongation (EL) could be simultaneously enhanced from 358, 231 MPa and 25.4% to 406, 305 MPa and 30.9%, specifically increased by 13.4, 32 and 22%. Meanwhile, along with improvement in electrical conductivity from 30.5 %IACS to 48.6 %IACS, the saturation magnetization (Ms) enhances from 24.6 to 28.5 emu g−1 and the coercivity (Hc) barely changes being 21.6 Oe and 22.2 Oe, respectively. Given that, it is suggested that the electromagnetic compatibility of Cu-20Fe alloy could be effectively enhanced. This present study could provide an effective and feasible strategy for enhancing the electromagnetic compatibility of Cu-Fe alloy by optimizing the dual-phase substructure via annealing treatment through solid-state phase transformation.