Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation
The performance of Cu-Fe alloy is related to the solidification structure, which is directly determined by the microstructure evolution during solidification. The solidification sequence, solid–liquid interface variation, and microstructural evolution of Cu-20wt%Fe alloy at three cooling rates (0.3,...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/2075-4701/13/3/581 |
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| author | Junli Guo Deping Lu Jin Zou |
| author_facet | Junli Guo Deping Lu Jin Zou |
| author_sort | Junli Guo |
| collection | DOAJ |
| description | The performance of Cu-Fe alloy is related to the solidification structure, which is directly determined by the microstructure evolution during solidification. The solidification sequence, solid–liquid interface variation, and microstructural evolution of Cu-20wt%Fe alloy at three cooling rates (0.3, 1.5, and 5.0 °C/s) were investigated. The results indicate that the remelting of primary γ-Fe dendrites was directly observed through the solidification experiment, and the partial γ-Fe dendrite was fragmented owing to remelting. The Fe phase morphology changed from the cellular structure to the typical finer and longer dendrite structure with the cooling rate increasing. As the cooling rate increased, the constitutional undercooling caused by the decrease in the Fe atom concentration and the increase in the Cu atom concentration increased in the solidifying interface. There was a parabolic relationship between the growth rate of the dendrite tip and time. Meanwhile, the growth of the primary γ-Fe phase was inhibited by the insufficient diffusion of Fe and Cu at the solidification front, which resulted in a decrease in the Fe phase volume fraction, and the Fe content in the Fe dendritic phase decreased slightly. |
| first_indexed | 2024-03-11T06:10:32Z |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T06:10:32Z |
| publishDate | 2023-03-01 |
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| spelling | doaj.art-967719e4bc4b4b8396cdd78d217b4d102023-11-17T12:39:45ZengMDPI AGMetals2075-47012023-03-0113358110.3390/met13030581Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ ObservationJunli Guo0Deping Lu1Jin Zou2Institute of Applied Physics, Jiangxi Academy of Sciences, Nanchang 330098, ChinaInstitute of Applied Physics, Jiangxi Academy of Sciences, Nanchang 330098, ChinaInstitute of Applied Physics, Jiangxi Academy of Sciences, Nanchang 330098, ChinaThe performance of Cu-Fe alloy is related to the solidification structure, which is directly determined by the microstructure evolution during solidification. The solidification sequence, solid–liquid interface variation, and microstructural evolution of Cu-20wt%Fe alloy at three cooling rates (0.3, 1.5, and 5.0 °C/s) were investigated. The results indicate that the remelting of primary γ-Fe dendrites was directly observed through the solidification experiment, and the partial γ-Fe dendrite was fragmented owing to remelting. The Fe phase morphology changed from the cellular structure to the typical finer and longer dendrite structure with the cooling rate increasing. As the cooling rate increased, the constitutional undercooling caused by the decrease in the Fe atom concentration and the increase in the Cu atom concentration increased in the solidifying interface. There was a parabolic relationship between the growth rate of the dendrite tip and time. Meanwhile, the growth of the primary γ-Fe phase was inhibited by the insufficient diffusion of Fe and Cu at the solidification front, which resulted in a decrease in the Fe phase volume fraction, and the Fe content in the Fe dendritic phase decreased slightly.https://www.mdpi.com/2075-4701/13/3/581copper iron alloysolidificationin situ observationcooling rates |
| spellingShingle | Junli Guo Deping Lu Jin Zou Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation Metals copper iron alloy solidification in situ observation cooling rates |
| title | Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation |
| title_full | Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation |
| title_fullStr | Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation |
| title_full_unstemmed | Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation |
| title_short | Investigation on Solidification in Cu-20wt%Fe Alloy through In Situ Observation |
| title_sort | investigation on solidification in cu 20wt fe alloy through in situ observation |
| topic | copper iron alloy solidification in situ observation cooling rates |
| url | https://www.mdpi.com/2075-4701/13/3/581 |
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