Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel
This research focuses on the addition of low-cost rare earth metals (REMs) to improve the comprehensive properties of hyper duplex stainless steels (DSSs). The effects of REM on the microstructure, mechanical properties, and pitting corrosion of hyper DSSs were analyzed by optical/scanning electron...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-12-01
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| Series: | Reviews on Advanced Materials Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/rams-2022-0284 |
| _version_ | 1797947612358246400 |
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| author | Wang Hang Wang Aiqin Li Changyi Yu Xingsheng Xie Jingpei Liang Tingting Liu Chenlu |
| author_facet | Wang Hang Wang Aiqin Li Changyi Yu Xingsheng Xie Jingpei Liang Tingting Liu Chenlu |
| author_sort | Wang Hang |
| collection | DOAJ |
| description | This research focuses on the addition of low-cost rare earth metals (REMs) to improve the comprehensive properties of hyper duplex stainless steels (DSSs). The effects of REM on the microstructure, mechanical properties, and pitting corrosion of hyper DSSs were analyzed by optical/scanning electron microscope metallographic examination, X-ray diffraction analysis, tensile test, impact test, and potentiodynamic polarization test. With the addition of REM, micro/nanoscale REM inclusions were formed, and the microstructure of the alloy was refined. With the increasing content of REM, the average diameter and area of inclusions in the alloy decreased at first and then increased. While the mechanical properties showed a trend of first increasing and then decreasing. An appropriate amount of stable REM inclusions could reduce the susceptibility of pitting corrosion and improve the pitting corrosion resistance of the alloy. The hyper DSSs with REM content in the range of 0.018–0.031 wt% have excellent mechanical properties and pitting resistance. |
| first_indexed | 2024-04-10T21:30:39Z |
| format | Article |
| id | doaj.art-84233ff5015f48708f0c762ea220710e |
| institution | Directory Open Access Journal |
| issn | 1605-8127 |
| language | English |
| last_indexed | 2024-04-10T21:30:39Z |
| publishDate | 2022-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Reviews on Advanced Materials Science |
| spelling | doaj.art-84233ff5015f48708f0c762ea220710e2023-01-19T13:47:25ZengDe GruyterReviews on Advanced Materials Science1605-81272022-12-0161187388710.1515/rams-2022-0284Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steelWang Hang0Wang Aiqin1Li Changyi2Yu Xingsheng3Xie Jingpei4Liang Tingting5Liu Chenlu6School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, People’s Republic of ChinaLuoyang CITIC HIC Casting & Forging Co., Ltd, Luoyang 471039, People’s Republic of ChinaLuoyang CITIC HIC Casting & Forging Co., Ltd, Luoyang 471039, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, People’s Republic of ChinaThis research focuses on the addition of low-cost rare earth metals (REMs) to improve the comprehensive properties of hyper duplex stainless steels (DSSs). The effects of REM on the microstructure, mechanical properties, and pitting corrosion of hyper DSSs were analyzed by optical/scanning electron microscope metallographic examination, X-ray diffraction analysis, tensile test, impact test, and potentiodynamic polarization test. With the addition of REM, micro/nanoscale REM inclusions were formed, and the microstructure of the alloy was refined. With the increasing content of REM, the average diameter and area of inclusions in the alloy decreased at first and then increased. While the mechanical properties showed a trend of first increasing and then decreasing. An appropriate amount of stable REM inclusions could reduce the susceptibility of pitting corrosion and improve the pitting corrosion resistance of the alloy. The hyper DSSs with REM content in the range of 0.018–0.031 wt% have excellent mechanical properties and pitting resistance.https://doi.org/10.1515/rams-2022-0284hyper duplex stainless steelrare earth metalsmicrostructuremechanical propertiespitting corrosion |
| spellingShingle | Wang Hang Wang Aiqin Li Changyi Yu Xingsheng Xie Jingpei Liang Tingting Liu Chenlu Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel Reviews on Advanced Materials Science hyper duplex stainless steel rare earth metals microstructure mechanical properties pitting corrosion |
| title | Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel |
| title_full | Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel |
| title_fullStr | Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel |
| title_full_unstemmed | Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel |
| title_short | Effects of rare earth metals on microstructure, mechanical properties, and pitting corrosion of 27% Cr hyper duplex stainless steel |
| title_sort | effects of rare earth metals on microstructure mechanical properties and pitting corrosion of 27 cr hyper duplex stainless steel |
| topic | hyper duplex stainless steel rare earth metals microstructure mechanical properties pitting corrosion |
| url | https://doi.org/10.1515/rams-2022-0284 |
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