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首页> 外文期刊>ISIJ international >Influence of Thermomechanical Processing on the Austenite-Pearlite Transformation in High Carbon Vanadium Microalloyed Steels
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Influence of Thermomechanical Processing on the Austenite-Pearlite Transformation in High Carbon Vanadium Microalloyed Steels

机译：热机械加工对高碳钒微合金钢中奥氏体-珠光体相变的影响

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摘要

Multipass torsion tests were carried on with several V-microalloyed high carbon steels, using different deformation sequences in order to modify the austenite state prior to transformation. Both recrystallized and deformed austenite microstructures were studied. After deformation, different cooling rates were applied. The results show that accumulating strain in the austenite before transformation seems to slightly increase the interlamellar spacing for a given cooling rate, this increase being related to the pearlite transformation taking place at higher temperatures because of the increase in the austenite grain boundary area per unit volume (S_V). On the other hand, the retained strain significantly contributes to a refinement of the "ferrite units" this effect being more significant as vanadium and nitrogen contents rise. A relationship between the mean "ferrite unit" size with S_V and cooling rate was determined. Similarly, empirical expressions to predict strength as a function of vanadium microalloying addition, S_V and cooling rate were derived.
机译：为了改变相变前的奥氏体状态，对几种V型微合金化高碳钢进行了多次变形测试，并使用了不同的变形顺序。研究了再结晶和变形奥氏体的微观结构。变形后，采用不同的冷却速率。结果表明，在给定的冷却速率下，奥氏体在相变之前的累积应变似乎会略微增加层间间距，这种增加与在较高温度下发生的珠光体相变有关，这是因为每单位体积奥氏体晶界面积的增加（S_V）。另一方面，保留的应变显着地有助于“铁素体单元”的细化，随着钒和氮含量的增加，这种影响更加明显。确定了平均“铁素体单位”尺寸与S_V和冷却速率之间的关系。类似地，导出了经验表达式，以预测强度随钒微合金化添加量，S_V和冷却速率的变化。

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  • 来源
    《ISIJ international》 |2010年第4期|p.546-555|共10页
  • 作者

    D. JORGE-BADIOLA; A. IZA-MENDIA; J.M. RODRIGUEZ-IBABE; B. LOPEZ;

  • 作者单位

    CEIT and Tecnun (University of Navarra), R M. Lardizabal 15, E-20018 San Sebastian, Basque Country, Spain;

    CEIT and Tecnun (University of Navarra), R M. Lardizabal 15, E-20018 San Sebastian, Basque Country, Spain;

    CEIT and Tecnun (University of Navarra), R M. Lardizabal 15, E-20018 San Sebastian, Basque Country, Spain;

    CEIT and Tecnun (University of Navarra), R M. Lardizabal 15, E-20018 San Sebastian, Basque Country, Spain;

  • 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

    eutectoid steel; pearlite transformation; vanadium microalloying; thermomechanical processing;

    机译：共析钢珠光体转变;钒微合金化热机械加工;

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