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首页> 外文期刊>ISIJ international >Role of Nb on Microstructural Evolution during Intercritical Annealing in Low-carbon Steels
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Role of Nb on Microstructural Evolution during Intercritical Annealing in Low-carbon Steels

机译：Nb在低碳钢的临界退火中对显微组织演变的作用

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摘要

We investigated the microstructural evolution during intercritical annealing in Nb-added low-carbon steels, focusing on the synergistic effects of the addition of Nb and the ferrite (α) to austenite (γ) phase transformation on the recrystallization behavior of α. Two kinds of specimens, containing 0.02 and 0.05 mass% Nb, were prepared and annealed at the intercritical temperature (750℃) for a long time. The progress of recovery and α recrystallization was retarded by increasing the amount of Nb addition during intercritical annealing. Moreover, the progress of α recrystallization during intercritical annealing was mainly attributed to continuous recrystallization due to subgrain growth. The fraction of γ that formed during intercritical annealing increased owing to Nb addition, but it did not increase with increasing amount of Nb addition. These results suggest that the progress of recovery and a recrystallization was retarded during intercritical annealing by the addition of Nb, thereby causing the increase in γ fraction. Furthermore, the increase in γ fraction led to further retardation of α recrystallization and α refinement with the addition of Nb.
机译：我们研究了添加铌的低碳钢在临界退火过程中的显微组织演变，重点研究了添加铌和铁素体（α）到奥氏体（γ）相变对α的再结晶行为的协同作用。准备了两种试样，分别含有0.02和0.05质量％的Nb，并在临界温度（750℃）下长时间退火。通过在临界退火中增加Nb的添加量，阻碍了恢复和α重结晶的进程。另外，在临界退火中α再结晶的进展主要归因于亚晶粒生长导致的连续再结晶。由于Nb的添加，在临界退火中形成的γ的比例增加，但随着Nb的添加量的增加而没有增加。这些结果表明，在临界退火中，通过添加Nb，阻碍了恢复和再结晶的进程，从而导致γ分数的增加。此外，随着Nb的增加，γ分数的增加导致α再结晶的进一步延迟和α细化。

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  • 来源
    《ISIJ international》 |2016年第12期|2290-2297|共8页
  • 作者

    Toshio OGAWA; Keiichi SATO; Hiroyuki DANNOSHITA; Kuniaki MARUOKA; Kohsaku USHIODA;

  • 作者单位

    Department of Mechanical Engineering, National Institute of Technology, Kisarazu College, 2-11-1 Kiyomidai-higashi, Kisarazu, Chiba, 292-0041 Japan,Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192 Japan;

    Department of Mechanical Engineering, National Institute of Technology, Kisarazu College, 2-11-1 Kiyomidai-higashi, Kisarazu, Chiba, 292-0041 Japan;

    Department of Mechanical Engineering, National Institute of Technology, Kisarazu College, 2-11-1 Kiyomidai-higashi, Kisarazu, Chiba, 292-0041 Japan;

    Department of Mechanical Engineering, National Institute of Technology, Kisarazu College, 2-11-1 Kiyomidai-higashi, Kisarazu, Chiba, 292-0041 Japan;

    Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192 Japan,Technical Research and Development Bureau, Nippon Steel & Sumitomo Metal 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; phase transformation; precipitation; low-carbon steel; microalloy;

    机译：重结晶相变沉淀;低碳钢微合金;

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