Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling
In this paper, super-gravity solidification and cold-rolling were utilized to obtain Al-14.5Si alloys. The influence of annealing time on microstructure and mechanical properties of Al-14.5Si alloys was investigated. Our results indicated that high elongation was achieved by super-gravity solidifica...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/16/5475 |
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| author | Zhanghua Gan Qian Ni Yuanyuan Huang Yin Su Yuehui Lu Chuandong Wu Jing Liu |
| author_facet | Zhanghua Gan Qian Ni Yuanyuan Huang Yin Su Yuehui Lu Chuandong Wu Jing Liu |
| author_sort | Zhanghua Gan |
| collection | DOAJ |
| description | In this paper, super-gravity solidification and cold-rolling were utilized to obtain Al-14.5Si alloys. The influence of annealing time on microstructure and mechanical properties of Al-14.5Si alloys was investigated. Our results indicated that high elongation was achieved by super-gravity solidification due to the submicron eutectic Si, making it possible to undertake the conventional cold-rolling. The yield strength (~214 ± 11 MPa) was significantly enhanced (~68.5%) after cold-rolling mainly due to high dislocation density. The coarsening of eutectic Si could be observed during annealing, which resulted in a decrease in yield strength. The elimination of internal stress and lattice distortion during annealing led to a decrease in micro-cracks/voids beneath the fracture surface during tensile testing, which in turn enhanced the elongation. |
| first_indexed | 2024-03-09T13:03:28Z |
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| id | doaj.art-17a2d2dd09e14022803cc87d2871e4cb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T13:03:28Z |
| publishDate | 2022-08-01 |
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| spelling | doaj.art-17a2d2dd09e14022803cc87d2871e4cb2023-11-30T21:51:21ZengMDPI AGMaterials1996-19442022-08-011516547510.3390/ma15165475Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-RollingZhanghua Gan0Qian Ni1Yuanyuan Huang2Yin Su3Yuehui Lu4Chuandong Wu5Jing 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, ChinaIn this paper, super-gravity solidification and cold-rolling were utilized to obtain Al-14.5Si alloys. The influence of annealing time on microstructure and mechanical properties of Al-14.5Si alloys was investigated. Our results indicated that high elongation was achieved by super-gravity solidification due to the submicron eutectic Si, making it possible to undertake the conventional cold-rolling. The yield strength (~214 ± 11 MPa) was significantly enhanced (~68.5%) after cold-rolling mainly due to high dislocation density. The coarsening of eutectic Si could be observed during annealing, which resulted in a decrease in yield strength. The elimination of internal stress and lattice distortion during annealing led to a decrease in micro-cracks/voids beneath the fracture surface during tensile testing, which in turn enhanced the elongation.https://www.mdpi.com/1996-1944/15/16/5475aluminum alloysmechanical propertiessuper-gravity solidificationcold-rolling |
| spellingShingle | Zhanghua Gan Qian Ni Yuanyuan Huang Yin Su Yuehui Lu Chuandong Wu Jing Liu Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling Materials aluminum alloys mechanical properties super-gravity solidification cold-rolling |
| title | Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling |
| title_full | Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling |
| title_fullStr | Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling |
| title_full_unstemmed | Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling |
| title_short | Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling |
| title_sort | influence of annealing time on microstructure and mechanical properties of al 14 5si alloy prepared by super gravity solidification and cold rolling |
| topic | aluminum alloys mechanical properties super-gravity solidification cold-rolling |
| url | https://www.mdpi.com/1996-1944/15/16/5475 |
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