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Decelerated Coarsening of (Ti, Mo)C Particles with a Core–Shell Structure in Austenite of a Ti-Mo-Bearing Steel

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Abstract

The aim of this study is to reveal the effect of Mo on coarsening of (Ti, Mo)C particles in austenite of a Ti-Mo-bearing steel. (Ti, Mo)C particles with a core–shell structure including a Ti-rich core and a Ti, Mo-rich shell were directly observed using high-resolution, high-angle, angular dark-field scanning transmission electron microscopy. Coarsening of (Ti, Mo)C particles is significantly decelerated due to the formation of a Mo-enriched shell, which is expected to reduce interfacial energy.

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The authors appreciate the financial support by the Heilongjiang Postdoctoral Fund of China (No. LBH-Z16046), China Postdoctoral Science Foundation (2017T100227), Central University Foundation of Harbin Engineering University (No. GK2100260207), and the National Natural Science Foundations of China (Nos. 51471094 and 51671065).

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Authors and Affiliations

  1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China

    Zhenqiang Wang & Fengchun Jiang

  2. Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Haidian District, Beijing, 100084, China

    Hao Chen & Zhigang Yang

Authors
  1. Zhenqiang Wang
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  2. Hao Chen
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  3. Zhigang Yang
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  4. Fengchun Jiang
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Correspondence to Hao Chen.

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Manuscript submitted November 28, 2017.

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Wang, Z., Chen, H., Yang, Z. et al. Decelerated Coarsening of (Ti, Mo)C Particles with a Core–Shell Structure in Austenite of a Ti-Mo-Bearing Steel. Metall Mater Trans A 49, 1455–1459 (2018). https://doi.org/10.1007/s11661-018-4552-0

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