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Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot
The structure and composition of large-scale Al–Cu alloy ingots are inhomogeneous, and the segregation of (especially) elemental Cu negatively affects the uniformity and stability of the subsequent components. In this work, four ultrasonic generators were used to manipulate solidification/microstruc...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747962/ https://www.ncbi.nlm.nih.gov/pubmed/31484313 http://dx.doi.org/10.3390/ma12172828 |
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author | Peng, Hao Li, Ruiqing Li, Xiaoqian Ding, Shan Chang, Mengjun Liao, Liqing Zhang, Yun Chen, Pinghu |
author_facet | Peng, Hao Li, Ruiqing Li, Xiaoqian Ding, Shan Chang, Mengjun Liao, Liqing Zhang, Yun Chen, Pinghu |
author_sort | Peng, Hao |
collection | PubMed |
description | The structure and composition of large-scale Al–Cu alloy ingots are inhomogeneous, and the segregation of (especially) elemental Cu negatively affects the uniformity and stability of the subsequent components. In this work, four ultrasonic generators were used to manipulate solidification/microstructures of cylindrical Al–Cu ingots (1250 mm in diameter; 3500 mm in length). The influence of ultrasonic configuration on both solidification microstructures and solute macrosegregation was investigated by changing the position parameters of generators for a fixed power. The results revealed that when the ultrasound is applied close to the center (I) from the 1/2 radius (II), the grain structure of the center undergoes significant refinement, degree of positive segregation in the center can be reduced, segregation index decreased from 0.2 to 0.15, and range of positive segregation in the center decreased from 200 to 150 mm. The segregation of elemental Cu was weakened by the combined effects of the ultrasound on the flow, heat transfer, and grain movement. |
format | Online Article Text |
id | pubmed-6747962 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-67479622019-09-27 Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot Peng, Hao Li, Ruiqing Li, Xiaoqian Ding, Shan Chang, Mengjun Liao, Liqing Zhang, Yun Chen, Pinghu Materials (Basel) Article The structure and composition of large-scale Al–Cu alloy ingots are inhomogeneous, and the segregation of (especially) elemental Cu negatively affects the uniformity and stability of the subsequent components. In this work, four ultrasonic generators were used to manipulate solidification/microstructures of cylindrical Al–Cu ingots (1250 mm in diameter; 3500 mm in length). The influence of ultrasonic configuration on both solidification microstructures and solute macrosegregation was investigated by changing the position parameters of generators for a fixed power. The results revealed that when the ultrasound is applied close to the center (I) from the 1/2 radius (II), the grain structure of the center undergoes significant refinement, degree of positive segregation in the center can be reduced, segregation index decreased from 0.2 to 0.15, and range of positive segregation in the center decreased from 200 to 150 mm. The segregation of elemental Cu was weakened by the combined effects of the ultrasound on the flow, heat transfer, and grain movement. MDPI 2019-09-03 /pmc/articles/PMC6747962/ /pubmed/31484313 http://dx.doi.org/10.3390/ma12172828 Text en © 2019 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 Peng, Hao Li, Ruiqing Li, Xiaoqian Ding, Shan Chang, Mengjun Liao, Liqing Zhang, Yun Chen, Pinghu Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot |
title | Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot |
title_full | Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot |
title_fullStr | Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot |
title_full_unstemmed | Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot |
title_short | Effect of Multi-Source Ultrasonic on Segregation of Cu Elements in Large Al–Cu Alloy Cast Ingot |
title_sort | effect of multi-source ultrasonic on segregation of cu elements in large al–cu alloy cast ingot |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747962/ https://www.ncbi.nlm.nih.gov/pubmed/31484313 http://dx.doi.org/10.3390/ma12172828 |
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