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On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy
An oscillatory microstructure has been observed during deep-cellular growth of directionally solidified Sn–36at.%Ni hyperperitectic alloy containing intermetallic compounds with narrow solubility range. This oscillatory microstructure with a dimension of tens of micrometers has been observed for the...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4828715/ https://www.ncbi.nlm.nih.gov/pubmed/27066761 http://dx.doi.org/10.1038/srep24315 |
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author | Peng, Peng Li, Xinzhong Li, Jiangong Su, Yanqing Guo, Jingjie |
author_facet | Peng, Peng Li, Xinzhong Li, Jiangong Su, Yanqing Guo, Jingjie |
author_sort | Peng, Peng |
collection | PubMed |
description | An oscillatory microstructure has been observed during deep-cellular growth of directionally solidified Sn–36at.%Ni hyperperitectic alloy containing intermetallic compounds with narrow solubility range. This oscillatory microstructure with a dimension of tens of micrometers has been observed for the first time. The morphology of this wave-like oscillatory structure is similar to secondary dendrite arms, and can be observed only in some local positions of the sample. Through analysis such as successive sectioning of the sample, it can be concluded that this oscillatory microstructure is caused by oscillatory convection of the mushy zone during solidification. And the influence of convection on this oscillatory microstructure was characterized through comparison between experimental and calculations results on the wavelength. Besides, the change in morphology of this oscillatory microstructure has been proved to be caused by peritectic transformation during solidification. Furthermore, the melt concentration increases continuously during solidification of intermetallic compounds with narrow solubility range, which helps formation of this oscillatory microstructure. |
format | Online Article Text |
id | pubmed-4828715 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-48287152016-04-19 On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy Peng, Peng Li, Xinzhong Li, Jiangong Su, Yanqing Guo, Jingjie Sci Rep Article An oscillatory microstructure has been observed during deep-cellular growth of directionally solidified Sn–36at.%Ni hyperperitectic alloy containing intermetallic compounds with narrow solubility range. This oscillatory microstructure with a dimension of tens of micrometers has been observed for the first time. The morphology of this wave-like oscillatory structure is similar to secondary dendrite arms, and can be observed only in some local positions of the sample. Through analysis such as successive sectioning of the sample, it can be concluded that this oscillatory microstructure is caused by oscillatory convection of the mushy zone during solidification. And the influence of convection on this oscillatory microstructure was characterized through comparison between experimental and calculations results on the wavelength. Besides, the change in morphology of this oscillatory microstructure has been proved to be caused by peritectic transformation during solidification. Furthermore, the melt concentration increases continuously during solidification of intermetallic compounds with narrow solubility range, which helps formation of this oscillatory microstructure. Nature Publishing Group 2016-04-12 /pmc/articles/PMC4828715/ /pubmed/27066761 http://dx.doi.org/10.1038/srep24315 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Peng, Peng Li, Xinzhong Li, Jiangong Su, Yanqing Guo, Jingjie On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy |
title | On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy |
title_full | On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy |
title_fullStr | On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy |
title_full_unstemmed | On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy |
title_short | On oscillatory microstructure during cellular growth of directionally solidified Sn–36at.%Ni peritectic alloy |
title_sort | on oscillatory microstructure during cellular growth of directionally solidified sn–36at.%ni peritectic alloy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4828715/ https://www.ncbi.nlm.nih.gov/pubmed/27066761 http://dx.doi.org/10.1038/srep24315 |
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