THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT
ABSTRACTIntroduction: In this study, microstructural changes and their effect on corrosion properties of 310s austenitic stainless steel during thermomechanical treatment were investigated.Methods: The cold rolling process was performed with a 90% reduction in thickness. The samples were then anneal...
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Marvdasht Branch, Islamic Azad University
2022-04-01
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| Series: | مواد نوین |
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| Online Access: | https://jnm.marvdasht.iau.ir/article_5567_b399fea9bf1aca7b823e36c01fff0dcc.pdf |
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| author | Reza Bolouk heidari Mostafa Eskandari Mahdi Yeganeh |
| author_facet | Reza Bolouk heidari Mostafa Eskandari Mahdi Yeganeh |
| author_sort | Reza Bolouk heidari |
| collection | DOAJ |
| description | ABSTRACTIntroduction: In this study, microstructural changes and their effect on corrosion properties of 310s austenitic stainless steel during thermomechanical treatment were investigated.Methods: The cold rolling process was performed with a 90% reduction in thickness. The samples were then annealed at 750, 850, 950, and 1050 °C for 10 minutes. The microstructure of the samples was examined by an optical microscope. Electrochemical impedance spectroscopy and potentiodynamic polarization tests were performed in 3.5 wt. % NaCl to investigate the corrosion properties of the samples.Findings and Conclusion: The results showed that the cold rolling process reduces the grain size and converts the austenite phase to strain-induced αʹ-martensite. Subsequently, a reverse transformation of αʹ-martensite to austenite occurs due to the annealing. Increasing the annealing temperature also causes grain growth and an increase in the average grain size. Corrosion resistance improved by reduction in grain size. Annealing at 750 °C also increased the corrosion resistance from 26800 to 38950 Ω.cm2 compared to the un-annealed sample. Reverse transformation is one of the main factors in this increase in corrosion resistance. While increasing the annealing temperature leads to grain growth and a decrease in corrosion resistance. So that the amount of corrosion resistance in the annealed sample at 1050 °C is reduced to 5400 Ω.cm2. |
| first_indexed | 2024-03-08T15:47:47Z |
| format | Article |
| id | doaj.art-75ca42a0278544ff8aa5c0201c5f2927 |
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| issn | 2228-5946 2423-7183 |
| language | fas |
| last_indexed | 2024-03-08T15:47:47Z |
| publishDate | 2022-04-01 |
| publisher | Marvdasht Branch, Islamic Azad University |
| record_format | Article |
| series | مواد نوین |
| spelling | doaj.art-75ca42a0278544ff8aa5c0201c5f29272024-01-09T09:27:09ZfasMarvdasht Branch, Islamic Azad Universityمواد نوین2228-59462423-71832022-04-011347213810.30495/jnm.2022.30360.19565567THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENTReza Bolouk heidari0Mostafa Eskandari1Mahdi Yeganeh2MSc graduated of Materials Engineering, Identification and Selection of Engineering Materials, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.Assistant Professor, Faculty member of Materials Engineering, Department of materials engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.Assistant Professor, Faculty member of Materials Engineering, Department of materials engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.ABSTRACTIntroduction: In this study, microstructural changes and their effect on corrosion properties of 310s austenitic stainless steel during thermomechanical treatment were investigated.Methods: The cold rolling process was performed with a 90% reduction in thickness. The samples were then annealed at 750, 850, 950, and 1050 °C for 10 minutes. The microstructure of the samples was examined by an optical microscope. Electrochemical impedance spectroscopy and potentiodynamic polarization tests were performed in 3.5 wt. % NaCl to investigate the corrosion properties of the samples.Findings and Conclusion: The results showed that the cold rolling process reduces the grain size and converts the austenite phase to strain-induced αʹ-martensite. Subsequently, a reverse transformation of αʹ-martensite to austenite occurs due to the annealing. Increasing the annealing temperature also causes grain growth and an increase in the average grain size. Corrosion resistance improved by reduction in grain size. Annealing at 750 °C also increased the corrosion resistance from 26800 to 38950 Ω.cm2 compared to the un-annealed sample. Reverse transformation is one of the main factors in this increase in corrosion resistance. While increasing the annealing temperature leads to grain growth and a decrease in corrosion resistance. So that the amount of corrosion resistance in the annealed sample at 1050 °C is reduced to 5400 Ω.cm2.https://jnm.marvdasht.iau.ir/article_5567_b399fea9bf1aca7b823e36c01fff0dcc.pdf310s steelthermomechanical treatmentmicrostructurecorrosion |
| spellingShingle | Reza Bolouk heidari Mostafa Eskandari Mahdi Yeganeh THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT مواد نوین 310s steel thermomechanical treatment microstructure corrosion |
| title | THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT |
| title_full | THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT |
| title_fullStr | THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT |
| title_full_unstemmed | THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT |
| title_short | THE EFFECT OF MICROSTRUCTURAL CHANGES ON THE CORROSION PROPERTIES OF 310S AUSTENITIC STAINLESS STEEL AFTER THERMOMECHANICAL TREATMENT |
| title_sort | effect of microstructural changes on the corrosion properties of 310s austenitic stainless steel after thermomechanical treatment |
| topic | 310s steel thermomechanical treatment microstructure corrosion |
| url | https://jnm.marvdasht.iau.ir/article_5567_b399fea9bf1aca7b823e36c01fff0dcc.pdf |
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