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<p>The microstructure evolution and performance changes of forged high-boron steel after quenching at different temperatures were studied. The results indicate that forging deformation induces localized “necking” phenomena in the network-like borides. After quenching, the borides further fragment and spheroidize, while the matrix microstructure transforms from pearlite and ferrite to martensite. With increasing quenching temperature, both the as-cast and forged high-boron steels exhibit a trend of initially increasing and then decreasing hardness and wear resistance, whereas the impact toughness shows the opposite trend. The optimal properties are achieved at a quenching temperature of 1000&#xa0;°C, where the hardness and wear resistance reach their maximum values, while the impact toughness remains relatively low. Furthermore, under the same quenching temperature, the forged high-boron steel demonstrates superior hardness, impact toughness, and wear resistance compared to the as-cast steel. Through comparative analysis, it can be clearly seen that the combination of forging deformation and quenching increases the hardness and impact toughness of high-boron steel by 65.2 and 51.5%, respectively.</p>

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Effect of Quenching Temperature on Microstructure and Properties of Forged High-Boron Steel

  • 期刊论文

  • 发表日期：

    2025年6月16日

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  • Wang Han,
  • Wan Zhandong,
  • Huang Longxiao,
  • Xing Zhenguo,
  • Lin Jian,
  • Fu Hanguang

摘要

The microstructure evolution and performance changes of forged high-boron steel after quenching at different temperatures were studied. The results indicate that forging deformation induces localized “necking” phenomena in the network-like borides. After quenching, the borides further fragment and spheroidize, while the matrix microstructure transforms from pearlite and ferrite to martensite. With increasing quenching temperature, both the as-cast and forged high-boron steels exhibit a trend of initially increasing and then decreasing hardness and wear resistance, whereas the impact toughness shows the opposite trend. The optimal properties are achieved at a quenching temperature of 1000 °C, where the hardness and wear resistance reach their maximum values, while the impact toughness remains relatively low. Furthermore, under the same quenching temperature, the forged high-boron steel demonstrates superior hardness, impact toughness, and wear resistance compared to the as-cast steel. Through comparative analysis, it can be clearly seen that the combination of forging deformation and quenching increases the hardness and impact toughness of high-boron steel by 65.2 and 51.5%, respectively.