Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750
The pitting corrosion resistance of S32750 super duplex stainless steel, annealing treated at temperatures of 950–1200 °C for 20–60 min, was investigated using potentiodynamic polarization tests. The results show that the volume fractions of ferrite in the S32750 duplex stainless steel increased fro...
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| Format: | Article |
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MDPI AG
2020-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/4/294 |
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| author | Shuang Liu Chaohua Yue Xi Chen Qiuhua Zhu Yiyou Tu |
| author_facet | Shuang Liu Chaohua Yue Xi Chen Qiuhua Zhu Yiyou Tu |
| author_sort | Shuang Liu |
| collection | DOAJ |
| description | The pitting corrosion resistance of S32750 super duplex stainless steel, annealing treated at temperatures of 950–1200 °C for 20–60 min, was investigated using potentiodynamic polarization tests. The results show that the volume fractions of ferrite in the S32750 duplex stainless steel increased from 48.9% to 68.4% as annealing temperatures increased from 950 to 1200 °C. The pitting potential of the sample increased first and then decreased from an annealing temperature of 950 to 1050 °C, and the highest pitting potential was observed after annealing at 1050 °C for 35 min. The pitting corrosion resistance of S32750 stainless steel is due to the combination of pitting resistance equivalent number (PREN) value, phase fraction and grain boundary area fraction, and the imbalance of corrosion potential. |
| first_indexed | 2024-03-10T20:31:12Z |
| format | Article |
| id | doaj.art-a7b53d5c46d6413baaacc5b87d978d70 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T20:31:12Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-a7b53d5c46d6413baaacc5b87d978d702023-11-19T21:22:59ZengMDPI AGCrystals2073-43522020-04-0110429410.3390/cryst10040294Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750Shuang Liu0Chaohua Yue1Xi Chen2Qiuhua Zhu3Yiyou Tu4School of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaJiangsu Wujin Stainless Steel Pipe Group Co., Ltd, Changzhou 213100, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaThe pitting corrosion resistance of S32750 super duplex stainless steel, annealing treated at temperatures of 950–1200 °C for 20–60 min, was investigated using potentiodynamic polarization tests. The results show that the volume fractions of ferrite in the S32750 duplex stainless steel increased from 48.9% to 68.4% as annealing temperatures increased from 950 to 1200 °C. The pitting potential of the sample increased first and then decreased from an annealing temperature of 950 to 1050 °C, and the highest pitting potential was observed after annealing at 1050 °C for 35 min. The pitting corrosion resistance of S32750 stainless steel is due to the combination of pitting resistance equivalent number (PREN) value, phase fraction and grain boundary area fraction, and the imbalance of corrosion potential.https://www.mdpi.com/2073-4352/10/4/294pitting corrosion resistanceduplex stainless steelpolarization testspitting resistance equivalent number |
| spellingShingle | Shuang Liu Chaohua Yue Xi Chen Qiuhua Zhu Yiyou Tu Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750 Crystals pitting corrosion resistance duplex stainless steel polarization tests pitting resistance equivalent number |
| title | Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750 |
| title_full | Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750 |
| title_fullStr | Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750 |
| title_full_unstemmed | Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750 |
| title_short | Pitting Corrosion Resistance on Annealing Treated Super Duplex Stainless Steel S32750 |
| title_sort | pitting corrosion resistance on annealing treated super duplex stainless steel s32750 |
| topic | pitting corrosion resistance duplex stainless steel polarization tests pitting resistance equivalent number |
| url | https://www.mdpi.com/2073-4352/10/4/294 |
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