中国物理B ›› 2022, Vol. 31 ›› Issue (2): 26103-026103.doi: 10.1088/1674-1056/ac0cd0

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Cluster dynamics modeling of niobium and titanium carbide precipitates in α-Fe and γ-Fe

Nadezda Korepanova1,2,†, Long Gu(顾龙)1,2,4,5,‡, Mihai Dima3, and Hushan Xu(徐瑚珊)1,2   

  1. 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2 School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 101408, China;
    3 Institute for Physics and Nuclear Engineering, Bucharest 077125, Romania;
    4 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
    5 Paul Scherrer Institute, Villigen 5232, Switzerland
  • 收稿日期:2021-05-13 修回日期:2021-06-15 接受日期:2021-06-21 出版日期:2022-01-13 发布日期:2022-01-13
  • 通讯作者: Nadezda Korepanova, Long Gu E-mail:nadezhda_kv@bk.ru;gulong@impcas.ac.cn
  • 基金资助:
    N. Korepanova is grateful for the CAS-TWAS President's Fellowship Programme for this doctoral fellowship (Grant No. 2016CTF004).

Cluster dynamics modeling of niobium and titanium carbide precipitates in α-Fe and γ-Fe

Nadezda Korepanova1,2,†, Long Gu(顾龙)1,2,4,5,‡, Mihai Dima3, and Hushan Xu(徐瑚珊)1,2   

  1. 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2 School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 101408, China;
    3 Institute for Physics and Nuclear Engineering, Bucharest 077125, Romania;
    4 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
    5 Paul Scherrer Institute, Villigen 5232, Switzerland
  • Received:2021-05-13 Revised:2021-06-15 Accepted:2021-06-21 Online:2022-01-13 Published:2022-01-13
  • Contact: Nadezda Korepanova, Long Gu E-mail:nadezhda_kv@bk.ru;gulong@impcas.ac.cn
  • Supported by:
    N. Korepanova is grateful for the CAS-TWAS President's Fellowship Programme for this doctoral fellowship (Grant No. 2016CTF004).

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摘要： Kinetic behaviors of niobium and titanium carbide precipitates in iron are simulated with cluster dynamics. The simulations, carried out in austenite and ferrite for niobium carbides, and in austenite for titanium carbide, are analyzed for dependences on temperature, solute concentration, and initial cluster distribution. The results are presented for different temperatures and solute concentrations, compared to experimental data available. They show little impact of initial cluster distribution beyond a certain relaxation time and that highly dilute alloys with monomers only present a significantly different behavior from denser alloys or ones with different initial cluster distributions.

关键词: cluster dynamics, precipitates, precipitation kinetics, carbides

Abstract: Kinetic behaviors of niobium and titanium carbide precipitates in iron are simulated with cluster dynamics. The simulations, carried out in austenite and ferrite for niobium carbides, and in austenite for titanium carbide, are analyzed for dependences on temperature, solute concentration, and initial cluster distribution. The results are presented for different temperatures and solute concentrations, compared to experimental data available. They show little impact of initial cluster distribution beyond a certain relaxation time and that highly dilute alloys with monomers only present a significantly different behavior from denser alloys or ones with different initial cluster distributions.

Key words: cluster dynamics, precipitates, precipitation kinetics, carbides

中图分类号:  (Metals and alloys)

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