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首页> 外文期刊>Materials Science and Engineering >Recrystallization-precipitation interaction during austenite hot deformation of a Nb microalloyed steel
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Recrystallization-precipitation interaction during austenite hot deformation of a Nb microalloyed steel

机译：铌微合金钢奥氏体热变形过程中的再结晶-析出相互作用

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摘要

The role of Nb during austenite processing of High Strength Low Alloy (HSLA) steels has been the subject of considerable interest and discussion over the past decades. In this work, the precipitation state of a Nb microalloyed steel is studied extensively during the different stages of the process, i.e. after reheating, during cooling, during deformation and during recrystallization. To do so, a combination of experimental methods was applied: Transmission Electron Microscopy in combination with Energy Dispersive X-ray Spectroscopy (TEM-EDX), Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS) and X-ray Diffraction (XRD). To obtain the best accuracy for these precipitation measurements, a model alloy was designed that showed extensive precipitation. From this experimental study, a correlation between the precipitate pinning and the recrystallization driving force could be made and the precipitation state during recrys tallization could be linked to the recrystallization kinetics by comparison of the recrystallization driving force to the Zener pinning force. It was confirmed that recrystallization occurred during the precipitate nucleation and coarsening stage, while it was halted completely during the precipitation growth stage.
机译：在过去的几十年中，Nb在高强度低合金（HSLA）钢奥氏体加工中的作用一直是引起广泛关注和讨论的主题。在这项工作中，广泛地研究了Nb微合金钢在该过程的不同阶段，即在重新加热之后，在冷却期间，在变形期间和在再结晶期间的沉淀状态。为此，应用了多种实验方法：透射电子显微镜与能量色散X射线光谱法（TEM-EDX），电感耦合等离子体质谱（ICP-MS）和X射线衍射（XRD）结合。为了获得这些降水测量的最佳精度，设计了显示出大量降水的模型合金。通过该实验研究，通过将重结晶驱动力与齐纳钉扎力进行比较，可以确定析出物钉扎与再结晶驱动力之间的相关性，并且可以将重结晶时的析出状态与再结晶动力学联系起来。可以确认，在析出核化和粗化阶段发生了再结晶，而在析出生长阶段则完全停止了再结晶。

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  • 来源
    《Materials Science and Engineering》 |2011年第17期|p.5519-5528|共10页
  • 作者

    S. Vervynckt; K. Verbeken; P. Thibaux; Y. Houbaert;

  • 作者单位

    Department of Materials Science and Engineering, Ghent University, Technologiepark 903, B-9052 Ghent, Belgium;

    Department of Materials Science and Engineering, Ghent University, Technologiepark 903, B-9052 Ghent, Belgium,Max-Planck-lnstitut fur Eisenforschung, Max-Planck-Strasse 1,40237 Dusseldorf, Germany;

    OCAS N.V., ArcelorMittal R&D Industry Ghent, J.F. Kennedylaan 3, B-9060 Zelzate, Belgium;

    Department of Materials Science and Engineering, Ghent University, Technologiepark 903, B-9052 Ghent, Belgium;

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  • 正文语种 eng
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  • 关键词

    austenite processing; microalloyed hsla steels; precipitation; recrystallization;

    机译：奥氏体加工;hsla微合金钢;析出;重结晶;

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