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首页> 外文期刊>ISIJ international >In-situ Measurements of Isothermal Wiistite Transformation of Thermally Grown FeO Scale Formed on 0.048 mass% Fe by Synchrotron Radiation in Air
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In-situ Measurements of Isothermal Wiistite Transformation of Thermally Grown FeO Scale Formed on 0.048 mass% Fe by Synchrotron Radiation in Air

机译：同步辐射在空气中对0.048质量％Fe上形成的FeO鳞片的热生长FeO的等温Wisite转变的原位测量

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摘要

Isothermal wustite transformation of thermally-grown FeO scale formed on 0.048 mass% Fe at 948 K for 180 s and annealed at 673, 723 K, and 773 K in air was studied in situ by synchrotron radiation. Wustite transformation initiated right at the beginning of isothermal heating, either by the formation of a new phase of meta-stable iron-rich wustite (at 673 and 723 K) or by direct transformation to magnetite (at 773 K). At 673 K, iron-rich wustite replaced the parent wustite thoroughly, and then transformed to magnetite and metal iron. At 723 K, formation of the iron-rich wustite started as well, but the reaction was interrupted and was replaced by a gradual enrichment reaction of iron in both the parent and the iron-rich wustite phases. Consumption of the parent wustite and generation of magnetite accompanied. Wustite transformation to generate magnetite and metal iron at 673 and 723 K was only possible for the iron-rich wustite. At 673 and 723 K, incubation time was needed to initiate transformation of meta-stable iron-rich wustite to magnetite and metal iron. Reaction to form the iron-rich wustite from the parent wustite was much easier. Tranformation of the iron-rich wustite to magnetite and metal iron is considered a root cause for the formation of the lamellar structure and the magnetite seam in the scale. The transformation can well be interpreted from the analogy of the formation of the pearlite structure in steels.
机译：通过同步辐射在原位研究了在0.0948质量％的Fe在948 K下180 s形成的，在673、723 K和773 K空气中退火的热生长FeO鳞片的等温铁素体转变。在等温加热开始时，通过形成亚稳的富铁铁素体新相（在673和723 K处）或通过直接转变为磁铁矿（在773 K处），开始了铁素体相变。在673 K时，富铁的钙铁矿彻底替代了母体的钙铁矿，然后转变为磁铁矿和金属铁。在723 K时，也开始形成富铁的钙铁矿，但反应被中断，并被母体和富铁的铁氧体相中铁的逐渐富集反应所取代。伴随着母体的威氏体的消耗和磁铁矿的产生。仅在富铁的铁素体中可能发生在铁素体转变，以在673和723 K生成磁铁矿和金属铁。在673和723 K时，需要保温时间才能开始将亚稳态富铁铁矿转变为磁铁矿和金属铁。由母方的褐铁矿形成富铁的褐铁矿的反应要容易得多。富铁的铁矿转变为磁铁矿和金属铁被认为是形成鳞片状结构和规模的磁铁矿接缝的根本原因。可以从类比钢中珠光体组织的形成中很好地解释这种转变。

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  • 来源
    《ISIJ international》 |2013年第2期|286-293|共8页
  • 作者

    Nobuo OTSUKA; Takashi DOI; Yasuyoshi HIDAKA; Yasuto HIGASHIDA; Yasuhiro MASAKI; Naomitsu MIZUI; Masugu SATO;

  • 作者单位

    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fusocho, Amagasaki, Hyogo, 660-0891 Japan;

    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fusocho, Amagasaki, Hyogo, 660-0891 Japan;

    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fusocho, Amagasaki, Hyogo, 660-0891 Japan;

    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fusocho, Amagasaki, Hyogo, 660-0891 Japan;

    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fusocho, Amagasaki, Hyogo, 660-0891 Japan;

    Steel Research Laboratories, Nippon Steel & Sumitomo Metal Corporation, 1-8 Fusocho, Amagasaki, Hyogo, 660-0891 Japan;

    Industrial Application Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Mikazuki, Sayo, Hyogo, 679-5198 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

    wustite transformation; wustite; oxide scale; synchrotron radiation;

    机译：奥氏体转变;讲究氧化皮同步辐射;

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