| Autor: |
TANG Ling, LIU Wenyi, WANG Yongshan |
| Jazyk: |
čínština |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Journal of Aeronautical Materials, Vol 43, Iss 5, Pp 50-57 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1005-5053 |
| DOI: |
10.11868/j.issn.1005-5053.2022.000149 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
