热腐蚀和热冲击下炭化釜Q245R钢本构关系的研究

刘志远 陈文飞 谢作然 蒋昊成 李进 朱珏

刘志远, 陈文飞, 谢作然, 蒋昊成, 李进, 朱珏. 热腐蚀和热冲击下炭化釜Q245R钢本构关系的研究[J]. 高压物理学报, 2024, 38(3): 034101. doi: 10.11858/gywlxb.20230813
引用本文: 刘志远, 陈文飞, 谢作然, 蒋昊成, 李进, 朱珏. 热腐蚀和热冲击下炭化釜Q245R钢本构关系的研究[J]. 高压物理学报, 2024, 38(3): 034101. doi: 10.11858/gywlxb.20230813
LIU Zhiyuan, CHEN Wenfei, XIE Zuoran, JIANG Haocheng, LI Jin, ZHU Jue. Constitutive Relationship of Q245R Steel of Carbonization Kettle under Thermal Corrosion and Thermal Shocking[J]. Chinese Journal of High Pressure Physics, 2024, 38(3): 034101. doi: 10.11858/gywlxb.20230813
Citation: LIU Zhiyuan, CHEN Wenfei, XIE Zuoran, JIANG Haocheng, LI Jin, ZHU Jue. Constitutive Relationship of Q245R Steel of Carbonization Kettle under Thermal Corrosion and Thermal Shocking[J]. Chinese Journal of High Pressure Physics, 2024, 38(3): 034101. doi: 10.11858/gywlxb.20230813

热腐蚀和热冲击下炭化釜Q245R钢本构关系的研究

doi: 10.11858/gywlxb.20230813
基金项目: 国家自然科学基金(11972203,11572162);宁波市自然科学基金(202003N4152)
详细信息
    作者简介:

    刘志远(1997-),男,硕士研究生,主要从事金属腐蚀性能研究. E-mail:1956039335@qq.com

    通讯作者:

    朱 珏(1979-),女,博士,教授,主要从事金属腐蚀性能研究. E-mail:zhujue@nbu.edu.cn

  • 中图分类号: O347; TG142

Constitutive Relationship of Q245R Steel of Carbonization Kettle under Thermal Corrosion and Thermal Shocking

  • 摘要: 采取电化学加速腐蚀试验对Q245R钢试样进行处理,以模拟炭化釜的实际腐蚀工况,通过电化学腐蚀拉伸试验,发现腐蚀不仅改变试样的几何尺寸,而且导致材料力学性能退化。对Q245R钢材料进行不同温度、腐蚀率、应变率(10−3~1 s−1低应变率、10~102 s−1中应变率、103 s−1高应变率)的拉伸试验,并运用MATLAB在Johnson-Cook本构方程的基础上进行拟合,增加特征强度与热处理温度、腐蚀率的关系,从而确定了材料的本构关系。结果显示,本构曲线与真实拉伸试验数据吻合较好,拟合效果良好。

     

  • 图  电化学腐蚀示意图

    Figure  1.  Schematic diagram of electrochemical corrosion

    图  未腐蚀和腐蚀试样的真实应力-应变曲线

    Figure  2.  True stress-strain curves of uncorroded and corroded specimens

    图  特征强度及断裂应变与腐蚀率的关系

    Figure  3.  Characteristic strength and fracture strain as a function of corrosion rate

    图  低应变率不同处理温度下未腐蚀试样的应力-应变曲线

    Figure  4.  Stress-strain curves of uncorroded specimens at different treatment temperatures and low strain rates

    图  低应变率不同处理温度下腐蚀试样的应力-应变曲线

    Figure  5.  Stress-strain curves of corroded specimens at different treatment temperatures and low strain rates

    图  屈服强度随应变率的变化

    Figure  6.  Variation of yield strength with strain rate

    图  抗拉强度随应变率的变化

    Figure  7.  Variation of tensile strength with strain rate

    图  中应变率不同温度下未腐蚀试样的应力-应变曲线

    Figure  8.  Stress-strain curves of uncorroded specimens at different treatment temperatures and medium strain rates

    图  中应变率不同温度下腐蚀试样的应力-应变曲线

    Figure  9.  Stress-strain curves of corroded specimens at different treatment temperatures and medium strain rates

    图  10  高温一体控制Hopkinson拉杆装置

    Figure  10.  High temperature integrated control Hopkinson tensile bar device

    图  11  不同温度和腐蚀工况下试样的应力-应变曲线

    Figure  11.  Stress-strain curves of specimens at different treatment temperatures and corrosion conditions

    图  12  高温高应变率下未腐蚀试样的应力-应变曲线

    Figure  12.  Stress-strain curves of uncorroded specimen at high temperature and high strain rate

    图  13  25 ℃下应力-应变曲线拟合的对比

    Figure  13.  Comparison of stress-strain curves fitting at 25 °C

    图  14  屈服强度-无量纲温度曲线

    Figure  14.  Yield strength-dimensionless temperature curve

    表  1  未腐蚀和腐蚀试样的特征强度

    Table  1.   Characteristic strength of uncorroded and corroded specimens

    Specimen $ \dot{\varepsilon } /{\mathrm{s}}$−1 Characteristic strength/MPa Specimen $ \dot{\varepsilon }/{\mathrm{s}} $−1 Characteristic strength/MPa
    25 ℃ 400 ℃ 500 ℃ 25 ℃ 400 ℃ 500 ℃
    Uncorroded 10−3 588.9 611.4 576.0 Corroded 10−3 497.6 594.7 476.4
    10−2 612.6 630.1 593.3 10−2 507.4 524.9 490.5
    10−1 623.9 645.9 615.5 10−1 533.6 564.8 530.4
    1 665.2 690.1 638.6 1 578.4 614.9 570.9
    10 716.5 742.9 662.0 10 682.8 712.9 625.8
    102 861.7 898.9 837.3 102 792.8 829.7 762.8
    103 980.1 1025.7 963.8 103 826.5 867.4 775.9
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出版历程
  • 收稿日期:  2023-12-14
  • 修回日期:  2024-01-12
  • 网络出版日期:  2024-04-07
  • 刊出日期:  2024-06-03

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