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Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content
Within the present work the homogenization of DC-cast (direct chill-cast) extrusion billets of Al-Mg-Si-Cu alloy was investigated. The alloy is characterized by higher Cu content than currently applied in 6xxx series. The aim of the work was analysis of billets homogenization conditions enabling max...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004725/ https://www.ncbi.nlm.nih.gov/pubmed/36903206 http://dx.doi.org/10.3390/ma16052091 |
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author | Woźnicki, Antoni Leszczyńska-Madej, Beata Włoch, Grzegorz Madura, Jacek Bogusz, Marek Leśniak, Dariusz |
author_facet | Woźnicki, Antoni Leszczyńska-Madej, Beata Włoch, Grzegorz Madura, Jacek Bogusz, Marek Leśniak, Dariusz |
author_sort | Woźnicki, Antoni |
collection | PubMed |
description | Within the present work the homogenization of DC-cast (direct chill-cast) extrusion billets of Al-Mg-Si-Cu alloy was investigated. The alloy is characterized by higher Cu content than currently applied in 6xxx series. The aim of the work was analysis of billets homogenization conditions enabling maximum dissolution of soluble phases during heating and soaking as well as their re-precipitation during cooling in form of particles capable for rapid dissolution during subsequent processes. The material was subjected to laboratory homogenization and the microstructural effects were assessed on the basis of DSC (differential scanning calorimetry) tests, SEM/EDS (scanning electron microscopy/energy-dispersive spectroscopy) investigations and XRD (X-ray diffraction) analyses. The proposed homogenization scheme with three soaking stages enabled full dissolution of Q-Al(5)Cu(2)Mg(8)Si(6) and θ-Al(2)Cu phases. The β-Mg(2)Si phase was not dissolved completely during soaking, but its amount was significantly reduced. Fast cooling from homogenization was needed to refine β-Mg(2)Si phase particles, but despite this in the microstructure coarse Q-Al(5)Cu(2)Mg(8)Si(6) phase particles were found. Thus, rapid billets heating may lead to incipient melting at the temperature of about 545 °C and the careful selection of billets preheating and extrusion conditions was found necessary. |
format | Online Article Text |
id | pubmed-10004725 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100047252023-03-11 Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content Woźnicki, Antoni Leszczyńska-Madej, Beata Włoch, Grzegorz Madura, Jacek Bogusz, Marek Leśniak, Dariusz Materials (Basel) Article Within the present work the homogenization of DC-cast (direct chill-cast) extrusion billets of Al-Mg-Si-Cu alloy was investigated. The alloy is characterized by higher Cu content than currently applied in 6xxx series. The aim of the work was analysis of billets homogenization conditions enabling maximum dissolution of soluble phases during heating and soaking as well as their re-precipitation during cooling in form of particles capable for rapid dissolution during subsequent processes. The material was subjected to laboratory homogenization and the microstructural effects were assessed on the basis of DSC (differential scanning calorimetry) tests, SEM/EDS (scanning electron microscopy/energy-dispersive spectroscopy) investigations and XRD (X-ray diffraction) analyses. The proposed homogenization scheme with three soaking stages enabled full dissolution of Q-Al(5)Cu(2)Mg(8)Si(6) and θ-Al(2)Cu phases. The β-Mg(2)Si phase was not dissolved completely during soaking, but its amount was significantly reduced. Fast cooling from homogenization was needed to refine β-Mg(2)Si phase particles, but despite this in the microstructure coarse Q-Al(5)Cu(2)Mg(8)Si(6) phase particles were found. Thus, rapid billets heating may lead to incipient melting at the temperature of about 545 °C and the careful selection of billets preheating and extrusion conditions was found necessary. MDPI 2023-03-03 /pmc/articles/PMC10004725/ /pubmed/36903206 http://dx.doi.org/10.3390/ma16052091 Text en © 2023 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 Woźnicki, Antoni Leszczyńska-Madej, Beata Włoch, Grzegorz Madura, Jacek Bogusz, Marek Leśniak, Dariusz Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content |
title | Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content |
title_full | Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content |
title_fullStr | Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content |
title_full_unstemmed | Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content |
title_short | Homogenization of Extrusion Billets of a Novel Al-Mg-Si-Cu Alloy with Increased Copper Content |
title_sort | homogenization of extrusion billets of a novel al-mg-si-cu alloy with increased copper content |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004725/ https://www.ncbi.nlm.nih.gov/pubmed/36903206 http://dx.doi.org/10.3390/ma16052091 |
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