Creep behavior and life prediction of a reactor pressure vessel steel above phase-transformation temperature via a deformation mechanism-based creep model
Chuanyang Lu
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
MOE Key Laboratory of Pressure Systems and Safety, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Search for more papers by this authorPeng Wang
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorSilu Zheng
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorXijia Wu
Structures and Materials Performance Laboratory, Institute for Aerospace Research, National Research Council Canada, Ottawa, Ontario, Canada
Search for more papers by this authorRong Liu
Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Ontario, Canada
Search for more papers by this authorCorresponding Author
Yanming He
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Engineering Research Center of Process Equipment and Remanufacturing, Ministry of Education, Zhejiang University of Technology, Hangzhou, China
Correspondence
Yanming He, Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Email: [email protected]
Search for more papers by this authorJianguo Yang
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Engineering Research Center of Process Equipment and Remanufacturing, Ministry of Education, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorZengliang Gao
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Engineering Research Center of Process Equipment and Remanufacturing, Ministry of Education, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorShan-Tung Tu
MOE Key Laboratory of Pressure Systems and Safety, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Search for more papers by this authorChuanyang Lu
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
MOE Key Laboratory of Pressure Systems and Safety, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Search for more papers by this authorPeng Wang
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorSilu Zheng
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorXijia Wu
Structures and Materials Performance Laboratory, Institute for Aerospace Research, National Research Council Canada, Ottawa, Ontario, Canada
Search for more papers by this authorRong Liu
Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Ontario, Canada
Search for more papers by this authorCorresponding Author
Yanming He
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Engineering Research Center of Process Equipment and Remanufacturing, Ministry of Education, Zhejiang University of Technology, Hangzhou, China
Correspondence
Yanming He, Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Email: [email protected]
Search for more papers by this authorJianguo Yang
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Engineering Research Center of Process Equipment and Remanufacturing, Ministry of Education, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorZengliang Gao
Institute of Process Equipment and Control Engineering, College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
Engineering Research Center of Process Equipment and Remanufacturing, Ministry of Education, Zhejiang University of Technology, Hangzhou, China
Search for more papers by this authorShan-Tung Tu
MOE Key Laboratory of Pressure Systems and Safety, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Search for more papers by this authorAbstract
For nuclear power generation as a carbon-neutral energy source, in-vessel retention (IVR) must be implemented to maintain the structural integrity of nuclear reactor pressure vessel (RPV) for more than 72 h under severe accidental conditions. This technology requires accurate prediction of creep deformation and life of RPV material being operated under pressure and extremely high-temperature gradient. The current work develops a simplified deformation-mechanism-based true-stress (DMTS) model for creep behavior/life-prediction of SA508 Gr.3 steel, a typical RPV material, above the phase transformation temperatures (800–1000°C). This model is used to evaluate the time to specific creep strain (t3% and t5%) and rupture (tr), in comparison with popular empirical methods such as Orr–Sherby–Dorn (OSD) and Larson–Miller (LM). The simplified DMTS model achieves an excellent agreement with the experimental observations. The controlling deformation mechanisms are also discussed by metallurgical examinations, which provide the physical premise for the model development and application.
Highlights
- A simplified deformation-mechanism-based true-stress (DMTS) creep model was proposed.
- This model predicted the creep-strain time and life of SA508 Gr. 3 at 800–1000°C.
- The prediction accuracy of simplified DMTS was compared with LM and OSD methods.
- The dominant creep deformation mechanism was dislocation climb-plus-glide.
CONFLICT OF INTEREST STATEMENT
The authors declared that they have no conflicts of interest to this work.
Open Research
DATA AVAILABILITY STATEMENT
The raw/processed data will be made available on request.
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