Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing
Herein, we report that the influence of annealing time on the microstructure and mechanical properties of Al-14.5Si alloys solidified under a super-gravity field. The results indicate that the coarsening of metastable eutectic Si and formation of precipitated Si could be observed at the early stage...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/4/684 |
| _version_ | 1797605897155903488 |
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| author | Yuehui Lu Chuandong Wu Hao Wu Jiamin Wang Yin Su Zhanghua Gan Jing Liu |
| author_facet | Yuehui Lu Chuandong Wu Hao Wu Jiamin Wang Yin Su Zhanghua Gan Jing Liu |
| author_sort | Yuehui Lu |
| collection | DOAJ |
| description | Herein, we report that the influence of annealing time on the microstructure and mechanical properties of Al-14.5Si alloys solidified under a super-gravity field. The results indicate that the coarsening of metastable eutectic Si and formation of precipitated Si could be observed at the early stage of annealing. A slight increase in yield strength and tensile strength could be observed in the sample annealed for 0.25 h, which can be ascribed to the formation of precipitated Si with limited size during the early stage of annealing. The intensified diffusion of Si atoms during annealing led to the coarsening and coalescence of the eutectic Si, as well as the coarsening of precipitated Si with further extension of the annealing time. |
| first_indexed | 2024-03-11T05:07:35Z |
| format | Article |
| id | doaj.art-f3557d6e55a946aea51a48fdc5fd2367 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T05:07:35Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-f3557d6e55a946aea51a48fdc5fd23672023-11-17T18:52:01ZengMDPI AGCrystals2073-43522023-04-0113468410.3390/cryst13040684Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during AnnealingYuehui Lu0Chuandong Wu1Hao Wu2Jiamin Wang3Yin Su4Zhanghua Gan5Jing Liu6State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaState Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaHerein, we report that the influence of annealing time on the microstructure and mechanical properties of Al-14.5Si alloys solidified under a super-gravity field. The results indicate that the coarsening of metastable eutectic Si and formation of precipitated Si could be observed at the early stage of annealing. A slight increase in yield strength and tensile strength could be observed in the sample annealed for 0.25 h, which can be ascribed to the formation of precipitated Si with limited size during the early stage of annealing. The intensified diffusion of Si atoms during annealing led to the coarsening and coalescence of the eutectic Si, as well as the coarsening of precipitated Si with further extension of the annealing time.https://www.mdpi.com/2073-4352/13/4/684super-gravity solidificationAl alloysannealing |
| spellingShingle | Yuehui Lu Chuandong Wu Hao Wu Jiamin Wang Yin Su Zhanghua Gan Jing Liu Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing Crystals super-gravity solidification Al alloys annealing |
| title | Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing |
| title_full | Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing |
| title_fullStr | Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing |
| title_full_unstemmed | Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing |
| title_short | Growth Mechanism of Eutectic Si in Super-Gravity Solidified Al-Si Alloy during Annealing |
| title_sort | growth mechanism of eutectic si in super gravity solidified al si alloy during annealing |
| topic | super-gravity solidification Al alloys annealing |
| url | https://www.mdpi.com/2073-4352/13/4/684 |
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