The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure
The laminated gradient of the SiC reinforced Mg-MMCs has been report few. In this paper, the laminated gradient structure of Mg-3Al-3Sn + xSiC alloys (x = 0, 0.5, 1.0 and 2.0 wt%) were prepared via powder metallurgy and spark plasma sintering method, and the effects of different sintering rate (60 °...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac3a42 |
| _version_ | 1797746712946671616 |
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| author | Guigui Peng Yilong Liang Wei Li |
| author_facet | Guigui Peng Yilong Liang Wei Li |
| author_sort | Guigui Peng |
| collection | DOAJ |
| description | The laminated gradient of the SiC reinforced Mg-MMCs has been report few. In this paper, the laminated gradient structure of Mg-3Al-3Sn + xSiC alloys (x = 0, 0.5, 1.0 and 2.0 wt%) were prepared via powder metallurgy and spark plasma sintering method, and the effects of different sintering rate (60 °C min, 70 °C min ^−1 and 80 °C min ^−1 ) on the phase, morphology and corrosion resistance of as-sintered and rolled-state samples with laminated gradient structure are characterized. The results shows that, from the surface to core, the grain size of samples gradually decreased with the contents of SiC addition decreasing. Compared to the as-sintered samples, the micro-hardness of rolled-state reach to 105 HV, and the electrochemical test results shows that corrosion resistance of rolled states samples prepared at 70 °C min ^−1 increased by 88%, and the corrosion potential (Ecorr) value is −1.3162 V _SCE , which is better than other samples; the samples prepared at 60 °C min ^−1 increased by 36%, and the samples prepared at 80 °C min ^−1 only decreased by 5%. It provides a new method to prepare the laminated gradient structure of magnesium alloy composites. |
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| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:40:47Z |
| publishDate | 2021-01-01 |
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| series | Materials Research Express |
| spelling | doaj.art-0429413824f54d96a4477b831beb395f2023-08-09T15:58:21ZengIOP PublishingMaterials Research Express2053-15912021-01-0181212652210.1088/2053-1591/ac3a42The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structureGuigui Peng0https://orcid.org/0000-0002-0156-5228Yilong Liang1Wei Li2College of Materials Science and Metallurgical Engineering, Guizhou University , 550025, People’s Republic of China; Guizhou key Laboratory for Mechanical Behavior and Microstructure of Materials, 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-performance Metal Structure Material and Advanced Manufacturing Technology, 550025, People’s Republic of ChinaCollege of Materials Science and Metallurgical Engineering, Guizhou University , 550025, People’s Republic of China; Guizhou key Laboratory for Mechanical Behavior and Microstructure of Materials, 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-performance Metal Structure Material and Advanced Manufacturing Technology, 550025, People’s Republic of ChinaCollege of Materials Science and Metallurgical Engineering, Guizhou University , 550025, People’s Republic of China; Guizhou key Laboratory for Mechanical Behavior and Microstructure of Materials, 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-performance Metal Structure Material and Advanced Manufacturing Technology, 550025, People’s Republic of ChinaThe laminated gradient of the SiC reinforced Mg-MMCs has been report few. In this paper, the laminated gradient structure of Mg-3Al-3Sn + xSiC alloys (x = 0, 0.5, 1.0 and 2.0 wt%) were prepared via powder metallurgy and spark plasma sintering method, and the effects of different sintering rate (60 °C min, 70 °C min ^−1 and 80 °C min ^−1 ) on the phase, morphology and corrosion resistance of as-sintered and rolled-state samples with laminated gradient structure are characterized. The results shows that, from the surface to core, the grain size of samples gradually decreased with the contents of SiC addition decreasing. Compared to the as-sintered samples, the micro-hardness of rolled-state reach to 105 HV, and the electrochemical test results shows that corrosion resistance of rolled states samples prepared at 70 °C min ^−1 increased by 88%, and the corrosion potential (Ecorr) value is −1.3162 V _SCE , which is better than other samples; the samples prepared at 60 °C min ^−1 increased by 36%, and the samples prepared at 80 °C min ^−1 only decreased by 5%. It provides a new method to prepare the laminated gradient structure of magnesium alloy composites.https://doi.org/10.1088/2053-1591/ac3a42laminated gradientmicrostructurecorrosion resistancespark plasma sintering |
| spellingShingle | Guigui Peng Yilong Liang Wei Li The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure Materials Research Express laminated gradient microstructure corrosion resistance spark plasma sintering |
| title | The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure |
| title_full | The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure |
| title_fullStr | The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure |
| title_full_unstemmed | The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure |
| title_short | The microstructure and corrosion resistance of SiC reinforced magnesium matrix composites with laminated gradient structure |
| title_sort | microstructure and corrosion resistance of sic reinforced magnesium matrix composites with laminated gradient structure |
| topic | laminated gradient microstructure corrosion resistance spark plasma sintering |
| url | https://doi.org/10.1088/2053-1591/ac3a42 |
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