Cooling of Duplex Stainless-Steel Bars With Different Water and Air Impinging Jet Flow Rates
Corresponding Author
Pavel Romanov
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Correspondence: Pavel Romanov ([email protected])
Contribution: Investigation, Methodology, Software, Validation, Visualization, Writing - original draft
Search for more papers by this authorGetiye Gebeyaw
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Contribution: Conceptualization, Methodology, Software, Data curation, Writing - review & editing
Search for more papers by this authorArvid Jahedi
Ericsson AB, Kista, Sweden
Contribution: Conceptualization, Methodology, Writing - review & editing
Search for more papers by this authorRasmus Kristensen
Outokumpu Stainless AB, Degerfors, Sweden
Contribution: Conceptualization, Resources, Software, Writing - review & editing
Search for more papers by this authorBahram Moshfegh
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Division of Energy Systems, Department of Management and Engineering, Linköping University, Linköping, Sweden
Contribution: Conceptualization, Funding acquisition, Methodology, Supervision, Project administration, Writing - review & editing
Search for more papers by this authorViktor Norman
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Contribution: Data curation, Methodology, Supervision, Writing - review & editing
Search for more papers by this authorRu Lin Peng
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Contribution: Investigation, Methodology, Validation, Writing - review & editing
Search for more papers by this authorMattias Calmunger
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Contribution: Conceptualization, Funding acquisition, Methodology, Project administration, Supervision, Resources, Writing - review & editing
Search for more papers by this authorCorresponding Author
Pavel Romanov
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Correspondence: Pavel Romanov ([email protected])
Contribution: Investigation, Methodology, Software, Validation, Visualization, Writing - original draft
Search for more papers by this authorGetiye Gebeyaw
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Contribution: Conceptualization, Methodology, Software, Data curation, Writing - review & editing
Search for more papers by this authorArvid Jahedi
Ericsson AB, Kista, Sweden
Contribution: Conceptualization, Methodology, Writing - review & editing
Search for more papers by this authorRasmus Kristensen
Outokumpu Stainless AB, Degerfors, Sweden
Contribution: Conceptualization, Resources, Software, Writing - review & editing
Search for more papers by this authorBahram Moshfegh
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Division of Energy Systems, Department of Management and Engineering, Linköping University, Linköping, Sweden
Contribution: Conceptualization, Funding acquisition, Methodology, Supervision, Project administration, Writing - review & editing
Search for more papers by this authorViktor Norman
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Contribution: Data curation, Methodology, Supervision, Writing - review & editing
Search for more papers by this authorRu Lin Peng
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Contribution: Investigation, Methodology, Validation, Writing - review & editing
Search for more papers by this authorMattias Calmunger
Division of Engineering Materials, Department of Management and Engineering, Linköping University, Linköping, Sweden
Division of Building, Energy and Environmental Engineering, Department of Technology and Environment, University of Gävle, Gävle, Sweden
Contribution: Conceptualization, Funding acquisition, Methodology, Project administration, Supervision, Resources, Writing - review & editing
Search for more papers by this authorFunding: This work was supported by The Knowledge Foundation (20190066).
ABSTRACT
Super duplex stainless steel (SDSS), known for its high corrosion resistance and mechanical properties, is widely used in applications in aggressive environments, such as marine and petrochemical industries. However, intermetallic precipitates may form during cooling from high temperatures, detrimentally affecting the steel's properties, especially its impact toughness. Since cooling after solution annealing is a key step in production to obtain a precipitation-free component, it is important to understand to what extent the cooling process can be optimized and adjusted in terms of cooling rates and their effect on the quality of steel. The aim of this study is to study the effect of cooling rate on the quality of SDSS. For this purpose, the Impinging Jet Quenching Technique (IJQT) was employed to perform continuous and controlled cooling of 80 mm diameter SDSS 2507 solid bars with water and air jets of different flow rates to cover a wide range of cooling rates. The bars were analyzed through microstructure analysis using a scanning electron microscope, hardness tests, impact toughness tests, and fracture surface observations using a stereo light microscope. The results showed a consistent decrease in impact toughness throughout the tests with decreasing cooling capacity, which facilitated the σ-phase precipitation.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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