Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins

The change of twinning morphology plays an important role in the modification of Al-Si alloys, which are widely used in industrial applications. However, the interpretation of this change is still insufficient. In this work, the microstructure of twins was investigated in two kinds of Al-Si alloys w...

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Autores principales: Sha, Xuechao, Chen, Xuefei, Ning, Huiyan, Xiao, Lirong, Yin, Dongdi, Mao, Lin, Zheng, Jiang, Zhou, Hao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073522/
https://www.ncbi.nlm.nih.gov/pubmed/29986393
http://dx.doi.org/10.3390/ma11071151
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author Sha, Xuechao
Chen, Xuefei
Ning, Huiyan
Xiao, Lirong
Yin, Dongdi
Mao, Lin
Zheng, Jiang
Zhou, Hao
author_facet Sha, Xuechao
Chen, Xuefei
Ning, Huiyan
Xiao, Lirong
Yin, Dongdi
Mao, Lin
Zheng, Jiang
Zhou, Hao
author_sort Sha, Xuechao
collection PubMed
description The change of twinning morphology plays an important role in the modification of Al-Si alloys, which are widely used in industrial applications. However, the interpretation of this change is still insufficient. In this work, the microstructure of twins was investigated in two kinds of Al-Si alloys with different additions of Ba using high-resolution transmission electron microscopy (HRTEM). Unlike the normal {111} twin that exists in Ba-free alloy, discontinuous twins and multiple twins were observed in the Ba-containing alloy. In addition, the 9R structure formed by the dissociation of twins was firstly observed at the turning of discontinuous twins and the intersection of multiple twins in Al-Si alloys.
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spelling pubmed-60735222018-08-13 Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins Sha, Xuechao Chen, Xuefei Ning, Huiyan Xiao, Lirong Yin, Dongdi Mao, Lin Zheng, Jiang Zhou, Hao Materials (Basel) Article The change of twinning morphology plays an important role in the modification of Al-Si alloys, which are widely used in industrial applications. However, the interpretation of this change is still insufficient. In this work, the microstructure of twins was investigated in two kinds of Al-Si alloys with different additions of Ba using high-resolution transmission electron microscopy (HRTEM). Unlike the normal {111} twin that exists in Ba-free alloy, discontinuous twins and multiple twins were observed in the Ba-containing alloy. In addition, the 9R structure formed by the dissociation of twins was firstly observed at the turning of discontinuous twins and the intersection of multiple twins in Al-Si alloys. MDPI 2018-07-06 /pmc/articles/PMC6073522/ /pubmed/29986393 http://dx.doi.org/10.3390/ma11071151 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sha, Xuechao
Chen, Xuefei
Ning, Huiyan
Xiao, Lirong
Yin, Dongdi
Mao, Lin
Zheng, Jiang
Zhou, Hao
Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
title Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
title_full Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
title_fullStr Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
title_full_unstemmed Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
title_short Modification of Eutectic Si in Al-Si-(Ba) Alloy by Inducing a Novel 9R Structure in Twins
title_sort modification of eutectic si in al-si-(ba) alloy by inducing a novel 9r structure in twins
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073522/
https://www.ncbi.nlm.nih.gov/pubmed/29986393
http://dx.doi.org/10.3390/ma11071151
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