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Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States

In the present work, the role of Mg atoms in the form of either Mg clusters or β phase on the moving dislocations in 5083 aluminum alloy sheet were investigated by comparing the plastic flow behavior and Portevin-Le Chatelier (PLC) character in annealed and quenched conditions. It is found that the...

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Autores principales: Tian, Ni, Wang, Guangdong, Zhou, Yiran, Liu, Kun, Zhao, Gang, Zuo, Liang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164487/
https://www.ncbi.nlm.nih.gov/pubmed/30149643
http://dx.doi.org/10.3390/ma11091533
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author Tian, Ni
Wang, Guangdong
Zhou, Yiran
Liu, Kun
Zhao, Gang
Zuo, Liang
author_facet Tian, Ni
Wang, Guangdong
Zhou, Yiran
Liu, Kun
Zhao, Gang
Zuo, Liang
author_sort Tian, Ni
collection PubMed
description In the present work, the role of Mg atoms in the form of either Mg clusters or β phase on the moving dislocations in 5083 aluminum alloy sheet were investigated by comparing the plastic flow behavior and Portevin-Le Chatelier (PLC) character in annealed and quenched conditions. It is found that the tensile strength of quenched sheets at different strain rates is slightly higher than those under annealed condition while the yield strength at both conditions is similar. In annealed sheets, the yield plateau was clearly observed at all tested strain rates with a strain less than 0.012, and its width increased with the increasing strain rate. However, no yield plateau was observed in quenched sheets. On the other hand, the characters of PLC are greatly varied with applied conditions and strain rate. Generally, annealed sheets have a higher waiting time, but lower critical strain/stress at lower strain rate (~1 × 10(−4) s(−1)), but they are similar at a higher strain rate (1 × 10(−2) s(−1)). However, the falling time at both annealed and quenched conditions are almost the same at tested strain rates.
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spelling pubmed-61644872018-10-12 Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States Tian, Ni Wang, Guangdong Zhou, Yiran Liu, Kun Zhao, Gang Zuo, Liang Materials (Basel) Article In the present work, the role of Mg atoms in the form of either Mg clusters or β phase on the moving dislocations in 5083 aluminum alloy sheet were investigated by comparing the plastic flow behavior and Portevin-Le Chatelier (PLC) character in annealed and quenched conditions. It is found that the tensile strength of quenched sheets at different strain rates is slightly higher than those under annealed condition while the yield strength at both conditions is similar. In annealed sheets, the yield plateau was clearly observed at all tested strain rates with a strain less than 0.012, and its width increased with the increasing strain rate. However, no yield plateau was observed in quenched sheets. On the other hand, the characters of PLC are greatly varied with applied conditions and strain rate. Generally, annealed sheets have a higher waiting time, but lower critical strain/stress at lower strain rate (~1 × 10(−4) s(−1)), but they are similar at a higher strain rate (1 × 10(−2) s(−1)). However, the falling time at both annealed and quenched conditions are almost the same at tested strain rates. MDPI 2018-08-25 /pmc/articles/PMC6164487/ /pubmed/30149643 http://dx.doi.org/10.3390/ma11091533 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
Tian, Ni
Wang, Guangdong
Zhou, Yiran
Liu, Kun
Zhao, Gang
Zuo, Liang
Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States
title Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States
title_full Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States
title_fullStr Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States
title_full_unstemmed Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States
title_short Study of the Portevin-Le Chatelier (PLC) Characteristics of a 5083 Aluminum Alloy Sheet in Two Heat Treatment States
title_sort study of the portevin-le chatelier (plc) characteristics of a 5083 aluminum alloy sheet in two heat treatment states
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164487/
https://www.ncbi.nlm.nih.gov/pubmed/30149643
http://dx.doi.org/10.3390/ma11091533
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