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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Autores principales: Gan, Zhanghua, Ni, Qian, Huang, Yuanyuan, Su, Yin, Lu, Yuehui, Wu, Chuandong, Liu, Jing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9409737/
https://www.ncbi.nlm.nih.gov/pubmed/36013610
http://dx.doi.org/10.3390/ma15165475
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author Gan, Zhanghua
Ni, Qian
Huang, Yuanyuan
Su, Yin
Lu, Yuehui
Wu, Chuandong
Liu, Jing
author_facet Gan, Zhanghua
Ni, Qian
Huang, Yuanyuan
Su, Yin
Lu, Yuehui
Wu, Chuandong
Liu, Jing
author_sort Gan, Zhanghua
collection PubMed
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.
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spelling pubmed-94097372022-08-26 Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and Cold-Rolling Gan, Zhanghua Ni, Qian Huang, Yuanyuan Su, Yin Lu, Yuehui Wu, Chuandong Liu, Jing Materials (Basel) Article 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. MDPI 2022-08-09 /pmc/articles/PMC9409737/ /pubmed/36013610 http://dx.doi.org/10.3390/ma15165475 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gan, Zhanghua
Ni, Qian
Huang, Yuanyuan
Su, Yin
Lu, Yuehui
Wu, Chuandong
Liu, Jing
Influence of Annealing Time on Microstructure and Mechanical Properties of Al-14.5Si Alloy Prepared by Super-Gravity Solidification and 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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9409737/
https://www.ncbi.nlm.nih.gov/pubmed/36013610
http://dx.doi.org/10.3390/ma15165475
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