金属热处理 ›› 2023, Vol. 48 ›› Issue (9): 265-270.DOI: 10.13251/j.issn.0254-6051.2023.09.045

• 计算机应用 • 上一篇    下一篇

相场法研究时效温度对Fe-Cu-Mn-Ni合金中富Cu相析出的影响

王康红, 许洋洋   

  1. 郑州工业应用技术学院 机电工程学院, 河南 新郑 451100
  • 收稿日期:2023-04-13 修回日期:2023-07-14 出版日期:2023-09-25 发布日期:2023-10-25
  • 作者简介:王康红(1990—),女,硕士,主要研究方向为计算机仿真,E-mail:wskanghongwang@163.com
  • 基金资助:
    教育部产学合作协同育人项目(202102256015);郑州市地方高校急(特)需专业立项建设项目(郑教明电[2019]495号);河南省科技攻关项目(232102220026);河南省隧道工程机械工程技术研究中心豫科实[2022]1号

Effect of aging temperature on Cu-rich precipitates in Fe-Cu-Mn-Ni alloy studied by phase-field method

Wang Kanghong, Xu Yangyang   

  1. School of Mechanical and Electrical Engineering, Zhengzhou University of Industrial Technology, Xinzheng Henan 451100, China
  • Received:2023-04-13 Revised:2023-07-14 Online:2023-09-25 Published:2023-10-25

摘要: 通过耦合CALPHAD热力学数据库,建立了一个模拟多元合金固态相变中微观组织演化的相场模型,并以Fe-Cu-Mn-Ni合金为例,从动力学角度揭示了时效温度变化对富Cu相析出机制的影响。结果表明,α相向γ相的转变和B2环的形成都与富Cu相的尺寸密切相关。此外,时效温度变化会导致富Cu相的形貌和粗化机制的改变。时效温度越高,富Cu相的析出时间越短,其体积分数和半径也越大,析出相数量的减少速率也越快。

关键词: 相场法, Fe-Cu-Mn-Ni合金, 富Cu相, 固态相变, 时效温度

Abstract: A phase-field model for simulating the microstructure evolution in the solid-state phase transformation of multi-component alloys was constructed by coupling the CALPHAD thermodynamic database. Taking Fe-Cu-Mn-Ni alloy as an example, the effect of aging temperature on the precipitation mechanism of Cu-rich precipitates was revealed from the kinetic point of view. The results show that the transformation of α to γ phase and the formation of B2 ring depend on the size of Cu-rich phase. In addition, the change of aging temperature results in the change of the morphology and precipitation mechanism of the Cu-rich phase. The higher the aging temperature, the shorter the precipitation time of the Cu-rich phase, the larger the volume fraction and radius of the Cu-rich phase, and the faster the reduction rate of the precipitated phase quantity.

Key words: phase-field method, Fe-Cu-Mn-Ni alloy, Cu-rich phase, solid-state phase transformation, aging temperature

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