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Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity

For a wide industrial application of magnesium alloys, a method for imparting high damping properties while maintaining mechanical properties is required. Controlling the crystallographic texture seems to be useful, because dislocations are known to have a significant influence on the damping charac...

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Autores principales: Kim, Kibeom, Ji, Yebin, Kim, Kwonhoo, Park, Minsoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964464/
https://www.ncbi.nlm.nih.gov/pubmed/36837029
http://dx.doi.org/10.3390/ma16041399
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author Kim, Kibeom
Ji, Yebin
Kim, Kwonhoo
Park, Minsoo
author_facet Kim, Kibeom
Ji, Yebin
Kim, Kwonhoo
Park, Minsoo
author_sort Kim, Kibeom
collection PubMed
description For a wide industrial application of magnesium alloys, a method for imparting high damping properties while maintaining mechanical properties is required. Controlling the crystallographic texture seems to be useful, because dislocations are known to have a significant influence on the damping characteristics of magnesium alloys. In addition, textures are affected by the microstructure and texture variation when the deformation or annealing is applied. However, there were less reports about their effect on damping capacity. Therefore, the effect of twinning and annealing, which can affect the recrystallization, were investigated in this study. An AZ31 alloy was hot rolled at 673 K with a reduction ratio of 10% and 50%, and then annealed at 673 K and 723 K for 0.5, 1, 2, and 3 h, respectively. SEM-EBSD was used to examine the microstructure and texture. In addition, each specimen’s hardness and internal friction were contemporarily measured. As a result, hot rolling produced tensile twins and their fraction increased with internal friction when the reduction ratio increased. Due to annealing, a discontinuous type of static recrystallization occurred within the twinning grains, and was highly activated along with the increasing annealing temperature and the fraction of twinning. In the samples annealed at 723 K, the internal friction continuously increased over the annealing time, whereas in the samples annealed at 673 K, the decrease in dislocation density was delayed while the internal friction showed a relatively low value.
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spelling pubmed-99644642023-02-26 Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity Kim, Kibeom Ji, Yebin Kim, Kwonhoo Park, Minsoo Materials (Basel) Article For a wide industrial application of magnesium alloys, a method for imparting high damping properties while maintaining mechanical properties is required. Controlling the crystallographic texture seems to be useful, because dislocations are known to have a significant influence on the damping characteristics of magnesium alloys. In addition, textures are affected by the microstructure and texture variation when the deformation or annealing is applied. However, there were less reports about their effect on damping capacity. Therefore, the effect of twinning and annealing, which can affect the recrystallization, were investigated in this study. An AZ31 alloy was hot rolled at 673 K with a reduction ratio of 10% and 50%, and then annealed at 673 K and 723 K for 0.5, 1, 2, and 3 h, respectively. SEM-EBSD was used to examine the microstructure and texture. In addition, each specimen’s hardness and internal friction were contemporarily measured. As a result, hot rolling produced tensile twins and their fraction increased with internal friction when the reduction ratio increased. Due to annealing, a discontinuous type of static recrystallization occurred within the twinning grains, and was highly activated along with the increasing annealing temperature and the fraction of twinning. In the samples annealed at 723 K, the internal friction continuously increased over the annealing time, whereas in the samples annealed at 673 K, the decrease in dislocation density was delayed while the internal friction showed a relatively low value. MDPI 2023-02-07 /pmc/articles/PMC9964464/ /pubmed/36837029 http://dx.doi.org/10.3390/ma16041399 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
Kim, Kibeom
Ji, Yebin
Kim, Kwonhoo
Park, Minsoo
Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity
title Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity
title_full Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity
title_fullStr Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity
title_full_unstemmed Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity
title_short Effect of Recrystallization Behavior of AZ31 Magnesium Alloy on Damping Capacity
title_sort effect of recrystallization behavior of az31 magnesium alloy on damping capacity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964464/
https://www.ncbi.nlm.nih.gov/pubmed/36837029
http://dx.doi.org/10.3390/ma16041399
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