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首页> 外文期刊>ISIJ international >Incomplete Recrystallization and Subsequent Microstructural Evolution during Intercritical Annealing in Cold-rolled Low Carbon Steels
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Incomplete Recrystallization and Subsequent Microstructural Evolution during Intercritical Annealing in Cold-rolled Low Carbon Steels

机译：冷轧低碳钢的临界退火过程中不完全重结晶和随后的组织演变

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摘要

Microstructural evolution during intercritical annealing after rapid heating of cold rolled low carbon steels was investigated by EBSD and TEM. When the specimens were heated to above the Ac_1 temperature before the completion of the primary recrystallization of α and then annealed, remarkable retardation of the primary recrystallization was observed, resulting in non-uniform grain size distribution of α. Because of the retardation, subgrains formed in non-recrystallized α are not consumed by recrystallized α and are thus able to gradually grow with annealing, and finally the grain size distribution of α becomes uniform. The analysis based on the r~n-r_0~n=kt equation has shown that the subgrain growth in non-recrystallized α from the holding period of 100 to 1 000 s follows n=3, indicating that the subgrain growth is controlled by the volume diffusion of Mn at α and γ interfaces. The transition of n from 3 to 2, observed at the holding time of longer than 1 000 s, may be due to the gradual disappearance of the smaller γ phase at subgrain boundaries.
机译：通过EBSD和TEM研究了冷轧低碳钢快速加热后的临界退火过程中的组织演变。当样品在α的初次再结晶完成之前被加热到Ac_1温度以上，然后退火时，观察到初次重结晶的明显延迟，导致α的晶粒尺寸分布不均匀。由于该延迟，未重结晶的α中形成的亚晶粒不会被重结晶的α消耗，因此能够随着退火而逐渐生长，最终α的晶粒尺寸分布变得均匀。基于r〜n-r_0〜n = kt方程的分析表明，从保持时间100到1000 s，未重结晶α中的亚晶粒生长遵循n = 3，这表明亚晶粒的生长受晶界的控制。 Mn在α和γ界面的体积扩散。在长于1000 s的保持时间内观察到的n从3到2的转变可能是由于较小的γ相在亚晶粒边界逐渐消失所致。

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  • 来源
    《ISIJ international》 |2010年第3期|p.469-475|共7页
  • 作者

    Toshio OGAWA; Naoki MARUYAMA; Natsuko SUGIURA; Naoki YOSHINAGA;

  • 作者单位

    Nagoya Works, Nippon Steel Corporation, 5-3 Tokai-machi, Tokai, Aichi 476-8686 Japan;

    Kimitsu R&D Laboratories, Nippon Steel Corporation, 1 Kimitsu, Kimitsu, Chiba 299-1141 Japan;

    Steel Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu, Chiba 293-8511 Japan;

    Steel Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu, Chiba 293-8511 Japan;

  • 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

    recrystallization; recovery; subgrain; low carbon steel;

    机译：重结晶复苏;亚粒低碳钢;

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