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首页> 外文期刊>Metals and Materials International >Effect of Ni Addition on Bainite Transformation and Properties in a 2000MPa Grade Ultrahigh Strength Bainitic Steel
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Effect of Ni Addition on Bainite Transformation and Properties in a 2000MPa Grade Ultrahigh Strength Bainitic Steel

机译：Ni添加对2000MPA级超高强度贝氏体钢贝氏体转化及性能的影响

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摘要

The effects of Nickle (Ni) addition on bainitic transformation and property of ultrahigh strength bainitic steels are investigated by three austempering processes. The results indicate that Ni addition hinders the isothermal bainite transformation kinetics, and decreases the volume fraction of bainite due to the decrease of chemical driving force for nucleation and growth of bainite transformation. Moreover, the product of tensile strength and total elongation (PSE) of high carbon bainitic steels decreases with Ni addition at higher austempering temperatures (220 and 250 degrees C), while it shows no significant difference at lower austempering temperature (200 degrees C). For the same steel (Ni-free or Ni-added steel), the amounts of bainite and RA firstly increase and then decrease with the increase of the austempering temperature, resulting in the highest PSE in the sample austempered at temperature of 220 degrees C. In addition, the effects of austempering time on bainite amount and property of high carbon bainitic steels are also analyzed. It indicates that in a given transformation time range of 30h, more volume of bainite and better mechanical property in high carbon bainitic steels can be obtained by increasing the isothermal transformation time.
机译：三个奥斯特林工艺研究了镍（Ni）添加对伯特强度壳体钢的贝氏体转化和性质的影响。结果表明，Ni加成阻碍了等温贝氏体转化动力学，并由于核肉转化核化学驱动力和生长而降低了贝氏体的体积分数。此外，高碳壳体钢的拉伸强度和总伸长率（PSE）的产物随NI添加的较高奥斯特敏感温度（220和250℃）而降低，而在较低的奥氏体温度（200℃）下显示出没有显着差异。对于相同的钢（无Ni或Ni加入钢），贝氏体和Ra的量首先增加，随后随着常视液温度的增加而降低，导致在220℃的温度温度下的样品中的最高PSE。此外，还分析了奥斯特稳定时间对高碳壳体钢的贝氏体量和性质的影响。它表明，在30小时的给定转化时间范围内，通过增加等温转化时间可以获得更多的高碳壳体钢中的贝氏体和更好的机械性能。

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  • 来源
    《Metals and Materials International》 |2018年第6期|共11页
  • 作者

    Tian Junyu; Xu Guang; Jiang Zhengyi; Hu Haijiang; Zhou Mingxing;

  • 作者单位

    Wuhan Univ Sci &

    Technol State Key Lab Refractories &

    Met Hubei Collaborat Innovat Ctr Adv Steels Wuhan 430081 Hubei Peoples R China;

    Wuhan Univ Sci &

    Technol State Key Lab Refractories &

    Met Hubei Collaborat Innovat Ctr Adv Steels Wuhan 430081 Hubei Peoples R China;

    Univ Wollongong Sch Mech Mat Mechatron &

    Biomed Engn Wollongong NSW 2522 Australia;

    Wuhan Univ Sci &

    Technol State Key Lab Refractories &

    Met Hubei Collaborat Innovat Ctr Adv Steels Wuhan 430081 Hubei Peoples R China;

    Wuhan Univ Sci &

    Technol State Key Lab Refractories &

    Met Hubei Collaborat Innovat Ctr Adv Steels Wuhan 430081 Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 金属材料;
  • 关键词

    Nickle; Bainite transformation; Austempering process; Tranformation time; Property;

    机译：镍;贝氏体转化;奥斯特术进程;转型时间;财产;

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