Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions
The poor corrosion resistance of magnesium alloys is one of the major obstacles to their widespread applications in the engineering field and the medical field. A hot deformation process is the main way to improve the corrosion resistance of magnesium alloys. In the present study, X-ray photoelectro...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/12/2/365 |
| _version_ | 1827653888861274112 |
|---|---|
| author | Yaqi Zheng Yuan Zhang Yun Liu Yaqiang Tian Xiaoping Zheng Liansheng Chen |
| author_facet | Yaqi Zheng Yuan Zhang Yun Liu Yaqiang Tian Xiaoping Zheng Liansheng Chen |
| author_sort | Yaqi Zheng |
| collection | DOAJ |
| description | The poor corrosion resistance of magnesium alloys is one of the major obstacles to their widespread applications in the engineering field and the medical field. A hot deformation process is the main way to improve the corrosion resistance of magnesium alloys. In the present study, X-ray photoelectron spectroscopy (XPS), a scanning electron microscope (SEM), an electron probe micro-analyzer (EPMA) and X-ray diffraction (XRD) were used to investigate the micro-galvanic corrosion behavior and film protection mechanism of hot-rolled Mg-2Zn-2Er-0.3Zr-0.3Mn under 25%, 50% and 75% thickness reductions in Hank’s solution. The results revealed that the best corrosion resistance was obtained in the alloy under a 75% thickness reduction, with a corrosion rate of 0.85 mm/y. The improvement in anti-corrosion was due to the coupling effect of a refined microstructure and dense degradation film on the large deformation hot-rolled alloy. Furthermore, the elements Mn and Er participated in the film formation and stabilized the film structure. |
| first_indexed | 2024-03-09T21:25:58Z |
| format | Article |
| id | doaj.art-b9a3aa57d16748f4a5e3bb44edc1ab84 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T21:25:58Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-b9a3aa57d16748f4a5e3bb44edc1ab842023-11-23T21:09:12ZengMDPI AGMetals2075-47012022-02-0112236510.3390/met12020365Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling ReductionsYaqi Zheng0Yuan Zhang1Yun Liu2Yaqiang Tian3Xiaoping Zheng4Liansheng Chen5Key Laboratory of the Ministry of Education for Modern Metallurgy Technology, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, ChinaThe poor corrosion resistance of magnesium alloys is one of the major obstacles to their widespread applications in the engineering field and the medical field. A hot deformation process is the main way to improve the corrosion resistance of magnesium alloys. In the present study, X-ray photoelectron spectroscopy (XPS), a scanning electron microscope (SEM), an electron probe micro-analyzer (EPMA) and X-ray diffraction (XRD) were used to investigate the micro-galvanic corrosion behavior and film protection mechanism of hot-rolled Mg-2Zn-2Er-0.3Zr-0.3Mn under 25%, 50% and 75% thickness reductions in Hank’s solution. The results revealed that the best corrosion resistance was obtained in the alloy under a 75% thickness reduction, with a corrosion rate of 0.85 mm/y. The improvement in anti-corrosion was due to the coupling effect of a refined microstructure and dense degradation film on the large deformation hot-rolled alloy. Furthermore, the elements Mn and Er participated in the film formation and stabilized the film structure.https://www.mdpi.com/2075-4701/12/2/365degradation filmrefined microstructuremicro-galvanic corrosionvarious rolling reduction |
| spellingShingle | Yaqi Zheng Yuan Zhang Yun Liu Yaqiang Tian Xiaoping Zheng Liansheng Chen Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions Metals degradation film refined microstructure micro-galvanic corrosion various rolling reduction |
| title | Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions |
| title_full | Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions |
| title_fullStr | Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions |
| title_full_unstemmed | Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions |
| title_short | Microstructure Characteristics and Corrosion Behaviors of Mg-2Zn-2Er-0.3Zr-0.3Mn Alloy under Various Rolling Reductions |
| title_sort | microstructure characteristics and corrosion behaviors of mg 2zn 2er 0 3zr 0 3mn alloy under various rolling reductions |
| topic | degradation film refined microstructure micro-galvanic corrosion various rolling reduction |
| url | https://www.mdpi.com/2075-4701/12/2/365 |
| work_keys_str_mv | AT yaqizheng microstructurecharacteristicsandcorrosionbehaviorsofmg2zn2er03zr03mnalloyundervariousrollingreductions AT yuanzhang microstructurecharacteristicsandcorrosionbehaviorsofmg2zn2er03zr03mnalloyundervariousrollingreductions AT yunliu microstructurecharacteristicsandcorrosionbehaviorsofmg2zn2er03zr03mnalloyundervariousrollingreductions AT yaqiangtian microstructurecharacteristicsandcorrosionbehaviorsofmg2zn2er03zr03mnalloyundervariousrollingreductions AT xiaopingzheng microstructurecharacteristicsandcorrosionbehaviorsofmg2zn2er03zr03mnalloyundervariousrollingreductions AT lianshengchen microstructurecharacteristicsandcorrosionbehaviorsofmg2zn2er03zr03mnalloyundervariousrollingreductions |