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Internal Friction Behavior Associated with Martensitic Decomposition in Low-carbon Dual-phase Steel

机译：低碳双相钢中马氏体分解相关的内部摩擦行为

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摘要

In this study, the martensitic decomposition behaviors of a low-carbon dual-phase steel were investigated by the low-frequency internal friction method, combined with various structural analysis techniques including X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Two internal friction peaks were observed at 418.4C and 448.1C, and were attributed to desolventization of supersaturated carbon atoms from martensite and formation of Cr3C7 precipitates, respectively. The results indicated that the two-step process during the martensitic decomposition, involving carbon atom diffusion and carbide precipitation, could be well explained by the internal friction technique. The micro-structural mechanisms associated with the generation of the two internal friction peaks during the martensitic decomposition are discussed.
机译：在该研究中，通过低频内部摩擦法研究了低碳双相钢的马氏体分解行为，与各种结构分析技术相结合，包括X射线衍射，扫描电子显微镜和透射电子显微镜。在418.4℃和448.1℃下观察到两个内部摩擦峰，归因于来自马氏体的过饱和碳原子的脱溶解，分别形成Cr3C7沉淀物。结果表明，在马氏体分解期间，涉及碳原子扩散和碳化物沉淀的两步过程可以通过内部摩擦技术很好地解释。讨论了与在马氏体分解期间产生两个内部摩擦峰的微结构机制。

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  • 来源
    《ISIJ international》 |2019年第7期|1369-1374|共6页
  • 作者

    Jinfeng ZHANG; Xiaochun WU; Na MIN; Shungui ZUO; Mingjiang JIN;

  • 作者单位

    State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University Shanghai 200444 China School of Electronic and Information Engineering Suzhou Vocational University Suzhou 215104 China;

    State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    Institute of Phase Transformation and Complex Structure School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    Institute of Phase Transformation and Complex Structure School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China;

  • 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

    DP steel; internal friction; martensitic decomposition;

    机译：DP钢;内部摩擦;马氏体分解;

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