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首页> 外文期刊>Strength of Materials >Effects of Undercooling and Transformation Time on Microstructure and Strength of Fe-C-Mn-Si Superbainitic Steel
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Effects of Undercooling and Transformation Time on Microstructure and Strength of Fe-C-Mn-Si Superbainitic Steel

机译：过冷和转化时间对Fe-C-Mn-Si超息肉钢微观结构和强度的影响

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摘要

A metallographic method, dilatometry, and X-ray diffraction were applied to investigate the effects of undercooling and holding time on bainitic transformation, microstructure, and strength of Fe-C-Mn-Si superbainitic steel. The results indicate that the strength of the samples decreases and the elongation increases with the isothermal transformation time, resulting in an increase in the product of the tensile strength and the total elongation. Therefore, the prolongation of the transformation time can improve the comprehensive property of the sample. In addition, the morphology of bainite changes from granular bainite to lath-like one with a decline in the isothermal transformation temperature, leading to an increase in strength. The elongation first increases and then decreases with a decrease in the isothermal transformation temperature. Finally, the sample shows the best comprehensive property when it is austempered at an intermediate temperature (350 degrees C). The data presented here are instrumental in optimizing the technology of austempering treatment in industrial production.
机译：施用金相方法，膨胀测定和X射线衍射，研究过冷和保持时间对Fe-C-Mn-Si超息肉钢的壳体转化，微观结构和强度的影响。结果表明样品的强度降低，并且伸长率随着等温转化时间的增加，导致拉伸强度的产物增加和总伸长率。因此，转化时间的延长可以改善样品的综合性质。此外，贝氏体的形态由粒状贝氏体变为像等温转化温度下降的粒状贝氏体，导致强度的增加。伸长率首先增加，然后随着等温转化温度的降低而降低。最后，当在中间温度（350摄氏度）时，样品显示最佳综合性质。这里提出的数据在优化工业生产中的奥斯特术治疗技术方面是有乐器。

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  • 来源
    《Strength of Materials》 |2019年第3期|共11页
  • 作者

    Tian J. Y.; Xu G.; Hu H. J.; Zhou M. X.;

  • 作者单位

    Wuhan Univ Sci &

    Technol Hubei Collaborat Innovat Ctr Adv Steels State Key Lab Refractories &

    Met Wuhan Hubei Peoples R China;

    Wuhan Univ Sci &

    Technol Hubei Collaborat Innovat Ctr Adv Steels State Key Lab Refractories &

    Met Wuhan Hubei Peoples R China;

    Wuhan Univ Sci &

    Technol Hubei Collaborat Innovat Ctr Adv Steels State Key Lab Refractories &

    Met Wuhan Hubei Peoples R China;

    Wuhan Univ Sci &

    Technol Hubei Collaborat Innovat Ctr Adv Steels State Key Lab Refractories &

    Met Wuhan Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

    undercooling; transformation time; superbainite; morphology; property;

    机译：过冷;转化时间;超息肉;形态;财产;

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