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首页> 外文期刊>Journal of Materials Research >Research on nucleation mechanism of the nanoscale bainite ferrite in a high carbon steel Fe-0.88C-1.35Si-1.03Cr-0.43Mn
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Research on nucleation mechanism of the nanoscale bainite ferrite in a high carbon steel Fe-0.88C-1.35Si-1.03Cr-0.43Mn

机译：高碳钢Fe-0.88C-1.35Si-1.03Cr-0.43Mn中纳米贝氏体铁素体成核机理的研究

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摘要

X-ray diffraction analysis, transmission electron microscopy, and thermodynamic calculation were used to investigate the effect of microstructural condition of austenite on the microstructural characteristics of the nanoscale bainite ferrite in a high carbon steel. As austenization temperature increases to 950 ℃, there are a higher vacancy concentration and homogenized distribution level of the interstitial carbon atom in the austenite grains. The movement of more di-vacancies combination could encourage the generation of the γ → α embryo nucleus. The interstitial carbon atoms have a stronger inhibitory effect on the formation of the γ → α embryo nucleus and homogenized distribution of the interstitial carbon atoms are able to make the inhibitory effect exist everywhere in the austenite grains. In consequence, the bainite ferrite could only nucleate in a smaller area (several nanometers), and grow into slender laths in a smaller width and a larger length.
机译：利用X射线衍射分析，透射电子显微镜和热力学计算研究了奥氏体的显微组织条件对高碳钢中纳米贝氏体铁素体显微组织特征的影响。随着奥氏体化温度升高到950℃，奥氏体晶粒中的空位浓度和间隙碳原子的分布水平更高。更多的双空位组合的运动可能会鼓励γ→α胚核的产生。间隙碳原子对γ→α胚核的形成具有更强的抑制作用，间隙碳原子的均匀分布能够使抑制作用存在于奥氏体晶粒中的任何地方。结果，贝氏体铁素体只能在较小的面积（几个纳米）中成核，并以较小的宽度和较大的长度长成细长的板条。

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  • 来源
    《Journal of Materials Research》 |2016年第10期|1510-1517|共8页
  • 作者

    Qingsuo Liu; Yue Shen; Qiaoqiao Wu; Bin Gao; Xin Zhang;

  • 作者单位

    School of Materials Science and Engineering, Tianjin University of Technology, 300383, Tianjin, China;

    School of Materials Science and Engineering, Tianjin University of Technology, 300383, Tianjin, China;

    School of Materials Science and Engineering, Tianjin University of Technology, 300383, Tianjin, China;

    School of Materials Science and Engineering, Tianjin University of Technology, 300383, Tianjin, China;

    School of Materials Science and Engineering, Tianjin University of Technology, 300383, Tianjin, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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