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<p>This study explores high-modulus steel deformation mechanisms, revealing dynamic recrystallization dominance at 800°C with grain refinement <i>via</i> nucleation, while dynamic recovery prevails at 950°C. Temperature elevation shifts dynamic recrystallization from discontinuous to continuous modes. Fe<sub>1.1</sub>Cr<sub>0.9</sub>B<sub>0.9</sub> phases enhance dynamic recrystallization nucleation through particle deformation zones. Following low-temperature hot rolling, the steel develops a dual-phase microstructure comprising fine grains and uniformly dispersed boride precipitates. This optimized structure achieves exceptional mechanical properties, including a high elastic modulus, tensile strength, and low density.</p> Graphical Abstract <p></p>

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Microstructures, mechanical properties, and hot deformation behavior of borides reinforced high-modulus steels

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • Yinghua Jiang,
  • Yun Han,
  • Huasai Liu,
  • Musheng Qiu,
  • Huaxiang Teng

摘要

This study explores high-modulus steel deformation mechanisms, revealing dynamic recrystallization dominance at 800°C with grain refinement via nucleation, while dynamic recovery prevails at 950°C. Temperature elevation shifts dynamic recrystallization from discontinuous to continuous modes. Fe1.1Cr0.9B0.9 phases enhance dynamic recrystallization nucleation through particle deformation zones. Following low-temperature hot rolling, the steel develops a dual-phase microstructure comprising fine grains and uniformly dispersed boride precipitates. This optimized structure achieves exceptional mechanical properties, including a high elastic modulus, tensile strength, and low density.

Graphical Abstract