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首页> 外文期刊>ISIJ international >Effect of Isothermal Transformation Treatment and Tempering on the Microstructure and Hardness of a Medium C and High Si Steels
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Effect of Isothermal Transformation Treatment and Tempering on the Microstructure and Hardness of a Medium C and High Si Steels

机译：等温转化处理和回火对介质C和高Si钢的微观结构和硬度的影响

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摘要

This research work aims to study the effect of 2wt%Mo on bainitic transformation kinetics and bainite morphology in 0.6wt%C-1.2wt%Si-1.0wt%Mn-0.2wt%Cr steel. Specimens are austenitized at 950°C and rapidly cooled in salt bath and isothermally treated between 200°C-300°C for different time intervals. Another set of specimens are rapidly cooled in oil after an austenitization treatment and then tempered in the temperature range of 200°C-550°C. In C-Mn-Si specimens, the amount of retained austenite increases with increasing the amount of bainite but no retained austenite is observed in bainitic C-Mn-Si-Mo specimens. The tempering behavior of C-Mn-Si-Mo alloy is considerably different than that of the Mo free alloy. Mo in a martensitic microstructure of C-Mn-Si-Mo alloy shows the secondary hardening effect peak upon tempering at 500°C. The examination of the secondary hardening would also contribute to the behavior of Mo in tempered bainitic steels. The bainitic specimens do not show a peak hardness but softening is retarded upon tempering at the same temperature range.
机译：该研究工作旨在研究0.6wt％C-1.2wt％Si-1.0wt％Mn-0.2wt％Cr钢中贝氏体转化动力学和贝氏体形态的2wt％Mo对贝氏体形态的影响。试样在950℃下奥氏体化，并在盐浴中快速冷却，在200°C-300℃之间以不同的时间间隔。在奥氏化处理后，另一组样品在油状物中迅速冷却，然后在200℃-550℃的温度范围内回火。在C-Mn-Si标本中，随着贝氏体的量增加，保留奥氏体的量增加，但在贝氏体C-Mn-Si-Mo标本中没有观察到保留的奥氏体。 C-Mn-Si-Mo-Mo合金的回火行为比Mo游离合金的回火行为不同。在C-Mn-Si-Mo合金的马氏体微观结构中的Mo表示在500℃的回火时峰值峰值。对二次硬化的检查也会有助于Mo在钢化贝氏体钢中的行为。贝氏体样本不显示峰值硬度，但在相同温度范围内回火时延迟软化。

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  • 来源
    《ISIJ international》 |2021年第5期|1679-1687|共9页
  • 作者

    Gulten KAFADAR; Ali KALKANLI; Abbas Tamer OEZDEMiR; Bilgehan OEGEL;

  • 作者单位

    Department of Metallurgical and Materials Engineering Middle East Technical University Ankara 06800 Turkey;

    Department of Metallurgical and Materials Engineering Middle East Technical University Ankara 06800 Turkey;

    Department of Metallurgical and Materials Engineering Gazi University Ankara 06560 Turkey;

    Department of Metallurgical and Materials Engineering Middle East Technical University Ankara 06800 Turkey;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bainite transformation; microstructure; secondary hardening; bainite; characterization;

    机译：贝氏体转型;微观结构;二次硬化;贝恩特;表征;

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