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

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

刘志远^{1, 2, 3,},
陈文飞^{4, 5, 6},
谢作然^{1, 2},
蒋昊成^{1, 2, 3},
李进^{1, 2, 3},
朱珏^{1, 2, 3,*, ,}

1.
宁波大学压力容器与管道安全浙江省工程研究中心, 浙江宁波　315211
2.
宁波大学冲击与安全工程教育部重点实验室, 浙江宁波　315211
3.
宁大 • 宏日UHPC力学联合研究院, 浙江宁波　315211
4.
宁波市特种设备检验研究院, 浙江宁波　315211
5.
宁波市特种设备智能检验与监测重点实验室, 浙江宁波　315211
6.
浙江省市场监管特种设备智能检验与监测重点实验室, 浙江宁波　315211

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
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- 文章访问数: 7
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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

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

LIU Zhiyuan^{1, 2, 3
,},
CHEN Wenfei^{4, 5, 6},
XIE Zuoran^{1, 2},
JIANG Haocheng^{1, 2, 3},
LI Jin^{1, 2, 3},
ZHU Jue^{1, 2, 3,*
, ,}

1.
Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline, Ningbo University, Ningbo 315211, Zhejiang, China
2.
Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China
3.
Ningbo University · Hongri UHPC Mechanics Joint Research Institute, Ningbo 315211, Zhejiang, China
4.
Ningbo Special Equipment Inspection and Research Institute, Ningbo 315211, Zhejiang, China
5.
Ningbo Key Laboratory of Intelligent Inspection and Monitoring of Special Equipment, Ningbo 315211, Zhejiang, China
6.
Key Laboratory of Intelligent Inspection and Monitoring of Special Equipment, Zhejiang Administration for Market Regulation, Ningbo 315211, Zhejiang, China

摘要

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。
- 炭化釜 /
- Q245R钢 /
- 腐蚀 /
- Johnson-Cook本构方程
Abstract: An electrochemical accelerated corrosion test was conducted on the Q245R steel sample to simulate the actual corrosion conditions of the carbonization kettle. It was found that corrosion not only causes changes in geometric dimensions, but also causes degradation of the material’s mechanical properties. Tensile tests were conducted on Q235R steel materials at different temperatures, corrosion rates, and strain rates (low strain rate of 10⁻³−1 s⁻¹, medium strain rate of 10−10² s⁻¹, and high strain rate of 10³ s⁻¹). A fitting method was carried out based on the modified Johnson-Cook constitutive equation and MATLAB software, which provides the relationship between its characteristic strength, heat treatment temperature and corrosion rate. According to the results, it can be seen that the fitting curve is in good agreement with the experimental curve.
- carbonization kettle /
- Q245R steel /
- corrosion /
- Johnson-Cook constitutive equation

HTML全文

图 1 电化学腐蚀示意图

Figure 1. Schematic diagram of electrochemical corrosion

下载: 全尺寸图片幻灯片

图 2 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

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图 3 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

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图 4 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

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图 5 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

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图 6 屈服强度随应变率的变化

Figure 6. Variation of yield strength with strain rate

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图 7 抗拉强度随应变率的变化

Figure 7. Variation of tensile strength with strain rate

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图 8 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

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图 9 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

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图 10 高温一体控制Hopkinson拉杆装置

Figure 10. High temperature integrated control Hopkinson tensile bar device

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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

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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

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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

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图 14 屈服强度-无量纲温度曲线

Figure 14. Yield strength-dimensionless temperature curve

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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
Specimen	$ \dot{\varepsilon } /{\mathrm{s}}$⁻¹	25 ℃	400 ℃	500 ℃	Specimen	$ \dot{\varepsilon }/{\mathrm{s}} $⁻¹	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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