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12Cr1MoVG钢平衡相变与析出热力学研究

闻莉 艾立群 雷悦 李亚强 洪陆阔 祝广鹏 王旭锋

闻莉, 艾立群, 雷悦, 李亚强, 洪陆阔, 祝广鹏, 王旭锋. 12Cr1MoVG钢平衡相变与析出热力学研究[J]. 钢铁钒钛, 2023, 44(3): 183-190. doi: 10.7513/j.issn.1004-7638.2023.03.028
引用本文: 闻莉, 艾立群, 雷悦, 李亚强, 洪陆阔, 祝广鹏, 王旭锋. 12Cr1MoVG钢平衡相变与析出热力学研究[J]. 钢铁钒钛, 2023, 44(3): 183-190. doi: 10.7513/j.issn.1004-7638.2023.03.028
Wen Li, Ai Liqun, Lei Yue, Li Yaqiang, Hong Lukuo, Zhu Guangpeng, Wang Xufeng. Thermodynamic study on equilibrium phase transformation and precipitation of 12Cr1MoVG steel[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 183-190. doi: 10.7513/j.issn.1004-7638.2023.03.028
Citation: Wen Li, Ai Liqun, Lei Yue, Li Yaqiang, Hong Lukuo, Zhu Guangpeng, Wang Xufeng. Thermodynamic study on equilibrium phase transformation and precipitation of 12Cr1MoVG steel[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 183-190. doi: 10.7513/j.issn.1004-7638.2023.03.028

12Cr1MoVG钢平衡相变与析出热力学研究

doi: 10.7513/j.issn.1004-7638.2023.03.028
基金项目: 河北省自然科学基金(E2021209101,E2022209112);唐山市人才资助项目(A20220212);河北省研究生创新资助项目(CXZZBS2021100);大学生创新创业项目(X2021215)。
详细信息
    作者简介:

    闻莉,1999年出生,女,硕士研究生,研究方向:钢铁冶金新理论、新工艺,E-mail:676396074@qq.com

    通讯作者:

    李亚强,1990年出生,男,博士,讲师,研究方向:钢铁冶金新理论、新工艺,E-mail: 1052270164@qq.com

  • 中图分类号: TF76,TG142.1

Thermodynamic study on equilibrium phase transformation and precipitation of 12Cr1MoVG steel

  • 摘要: 通过热力学软件JMatPro对12Cr1MoVG钢冷却过程中的相变和析出行为进行了研究,分析了钢中合金元素对纵裂纹敏感性的影响。结果表明,12Cr1MoVG钢从1600 ℃平衡冷却至400 ℃过程相变路径为:L→L+δ→L+δ+γ→δ+γ→γ→γ+MnS→γ+MnS+MN→γ+MnS+M(C,N)→γ+α+MnS+M(C,N)→γ+α+MnS+M(C,N)+AlN→γ+α+MnS+M(C,N)+M(C,N)+AlN+M23C6→α+MnS+M(C,N)+M(C,N)+AlN+M23C6。随着钢中P、S、Mo、V、Cr元素含量的增加,纵裂纹敏感性增加;而随着钢中Mn、Si元素含量的增加,纵裂纹敏感性降低。基于α+γ两相区温度区间和M(C,N)析出情况分析得到低温脆性温度区间为747.6~869 ℃,与拉伸试验测试结果基本一致。
  • 图  1  12Cr1MoVG钢平衡相与温度的关系

    Figure  1.  Relationship between equilibrium phases and temperature of 12Cr1MoVG steel

    图  2  凝固过程中的相变

    Figure  2.  Phase transformation during solidification

    图  3  固相中平衡相与温度的关系

    Figure  3.  Relationship between equilibrium phases and temperature in solid phases

    图  4  MnS各元素组成

    Figure  4.  Composition of MnS

    图  5  MN含量随温度的变化

    Figure  5.  Variation of MN content with temperature

    图  6  MN元素组成

    Figure  6.  Composition of MN element

    图  7  MN、M(C,N)含量随温度的变化

    Figure  7.  Variation of MN and M (C, N) contents with temperature

    图  8  两相区、低温区平衡相与温度的关系

    Figure  8.  Relationship between equilibrium phases and temperature in two-phase region and low-temperature region

    图  9  AlN含量随温度的变化

    Figure  9.  Variation of AlN content with temperature

    图  10  M23C6含量随温度的变化

    Figure  10.  Change of M23C6 content with temperature

    图  11  M23C6各元素组成

    Figure  11.  Composition of M23C6

    图  12  S含量对TLITZD的影响

    Figure  12.  Effect of S content on TLITZD

    图  13  P含量对TLITZD的影响

    Figure  13.  Effect of P content on TLITZD

    图  14  Mo含量对TLITZD的影响

    Figure  14.  Effect of Mo content on TLITZD

    图  15  V含量对TLITZD的影响

    Figure  15.  Effect of V content on TLITZD

    图  16  Cr含量对TLITZD的影响

    Figure  16.  Effect of Cr content on TLITZD

    图  17  Mn含量对TLITZD的影响

    Figure  17.  Effect of Mn content on TLITZD

    图  18  Si含量对TLITZD的影响

    Figure  18.  Effect of Si content on TLITZD

    表  1  12Cr1MoVG钢主要化学成分

    Table  1.   Chemical composition of 12Cr1MoVG steel %

    CSiMnPSAlsCrMoVNbN
    0.09~0.140.17~
    0.35
    0.45~
    0.7

    0.02

    0.01

    0.02
    0.95~1.20.25
    ~
    0.35
    0.17
    ~
    0.3

    0.02

    0.008
    下载: 导出CSV
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  • 收稿日期:  2022-09-24
  • 刊出日期:  2023-06-30

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