Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy
Optical microscope, X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer were used to study the microstructure, phase growth morphology and phase composition of free solidified Mg-Sn eutectic in-situ composites at different solidification stages.The crystal growth me...
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| Format: | Article |
| Language: | zho |
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Journal of Aeronautical Materials
2023-10-01
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| Series: | Journal of Aeronautical Materials |
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| Online Access: | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000149 |
| _version_ | 1797663537643913216 |
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| author | TANG Ling LIU Wenyi WANG Yongshan |
| author_facet | TANG Ling LIU Wenyi WANG Yongshan |
| author_sort | TANG Ling |
| collection | DOAJ |
| description | Optical microscope, X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer were used to study the microstructure, phase growth morphology and phase composition of free solidified Mg-Sn eutectic in-situ composites at different solidification stages.The crystal growth mechanism of Mg-Sn eutectic in-situ composite and the effect of cooling rate on the microstructure of the alloy were investigated.The results show that the solidification structure of Mg-Sn hypoeutectic alloy is hexagonal rose-like primary α-Mg phase and eutectic Mg/Mg2Sn lamellar mixed structure. The solidification structure of Mg-Sn hypereutectic alloy is a mixed structure of angular primary Mg2Sn intermetallic compound phase and eutectic Mg/Mg2Sn lamellar structure.With the increase of Sn content, the quantity of primary α-Mg phase decreased and the content of eutectic phase increased. With the increase of cooling rate, the microstructure of the alloy is obviously refined.The α-Mg primary phase is a non-faceted phase, and the primary Mg2Sn intermetallic compound phase is a faceted phase. |
| first_indexed | 2024-03-11T19:16:06Z |
| format | Article |
| id | doaj.art-61ce7b9a4f664cae96f2ca309722d652 |
| institution | Directory Open Access Journal |
| issn | 1005-5053 |
| language | zho |
| last_indexed | 2024-03-11T19:16:06Z |
| publishDate | 2023-10-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-61ce7b9a4f664cae96f2ca309722d6522023-10-09T08:50:06ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50532023-10-01435505710.11868/j.issn.1005-5053.2022.0001492022-0149-1Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloyTANG Ling0LIU Wenyi1WANG Yongshan2School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong723003, Shaanxi，ChinaSchool of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong723003, Shaanxi，ChinaSchool of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong723003, Shaanxi，ChinaOptical microscope, X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer were used to study the microstructure, phase growth morphology and phase composition of free solidified Mg-Sn eutectic in-situ composites at different solidification stages.The crystal growth mechanism of Mg-Sn eutectic in-situ composite and the effect of cooling rate on the microstructure of the alloy were investigated.The results show that the solidification structure of Mg-Sn hypoeutectic alloy is hexagonal rose-like primary α-Mg phase and eutectic Mg/Mg2Sn lamellar mixed structure. The solidification structure of Mg-Sn hypereutectic alloy is a mixed structure of angular primary Mg2Sn intermetallic compound phase and eutectic Mg/Mg2Sn lamellar structure.With the increase of Sn content, the quantity of primary α-Mg phase decreased and the content of eutectic phase increased. With the increase of cooling rate, the microstructure of the alloy is obviously refined.The α-Mg primary phase is a non-faceted phase, and the primary Mg2Sn intermetallic compound phase is a faceted phase.http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000149hypoeutectic alloyeutectic in-situ compositesfaceted phasenon-faceted phase |
| spellingShingle | TANG Ling LIU Wenyi WANG Yongshan Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy Journal of Aeronautical Materials hypoeutectic alloy eutectic in-situ composites faceted phase non-faceted phase |
| title | Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy |
| title_full | Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy |
| title_fullStr | Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy |
| title_full_unstemmed | Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy |
| title_short | Solidification structure evolution and crystal growth mechanism of Mg-Sn eutectic alloy |
| title_sort | solidification structure evolution and crystal growth mechanism of mg sn eutectic alloy |
| topic | hypoeutectic alloy eutectic in-situ composites faceted phase non-faceted phase |
| url | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000149 |
| work_keys_str_mv | AT tangling solidificationstructureevolutionandcrystalgrowthmechanismofmgsneutecticalloy AT liuwenyi solidificationstructureevolutionandcrystalgrowthmechanismofmgsneutecticalloy AT wangyongshan solidificationstructureevolutionandcrystalgrowthmechanismofmgsneutecticalloy |