Cargando…

Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles

In the present study, the solution and ageing treatments behavior of Mg-RE-Zr-Zn alloy (Elektron21) and its nano-AlN reinforced nanocomposites have been evaluated. The properties of the thermal-treated materials were investigated in terms of Vickers hardness, the area fraction of precipitates, micro...

Descripción completa

Detalles Bibliográficos
Autores principales: Saboori, Abdollah, Padovano, Elisa, Pavese, Matteo, Dieringa, Hajo, Badini, Claudio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5744315/
https://www.ncbi.nlm.nih.gov/pubmed/29207461
http://dx.doi.org/10.3390/ma10121380
_version_ 1783288720773873664
author Saboori, Abdollah
Padovano, Elisa
Pavese, Matteo
Dieringa, Hajo
Badini, Claudio
author_facet Saboori, Abdollah
Padovano, Elisa
Pavese, Matteo
Dieringa, Hajo
Badini, Claudio
author_sort Saboori, Abdollah
collection PubMed
description In the present study, the solution and ageing treatments behavior of Mg-RE-Zr-Zn alloy (Elektron21) and its nano-AlN reinforced nanocomposites have been evaluated. The properties of the thermal-treated materials were investigated in terms of Vickers hardness, the area fraction of precipitates, microstructure and phase composition. The solution treatments were performed by treating at 520 °C, 550 °C and 580 °C in argon atmosphere. The outcomes show that the hardness of the solutionized alloys was slightly affected by the solution temperature. X-ray diffraction and image analysis revealed that the complete dissolution of precipitates was not possible, neither for Elektron21 (El21) nor for its AlN containing nanocomposites. The ageing treatment of El21 led to a significant improvement in hardness after 20 h, while for longer times, it progressively decreased. The effect of ageing on the hardness of El21–AlN composites was found to be much less than this effect on the hardness of the host alloy. Electron backscatter diffraction (EBSD) analysis of El21 and El21–1%AlN after solution treatment confirm the random orientation of grains with a typical texture of random distribution. The as-cast creep results showed that the incorporation of nanoparticles could effectively improve the creep properties, while the results after solution treatment at 520 °C for 12 h followed by ageing treatment at 200 °C for 20 h confirmed that the minimum creep rate of T6-El21 was almost equal to the as-cast El21–AlN.
format Online
Article
Text
id pubmed-5744315
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-57443152017-12-31 Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles Saboori, Abdollah Padovano, Elisa Pavese, Matteo Dieringa, Hajo Badini, Claudio Materials (Basel) Article In the present study, the solution and ageing treatments behavior of Mg-RE-Zr-Zn alloy (Elektron21) and its nano-AlN reinforced nanocomposites have been evaluated. The properties of the thermal-treated materials were investigated in terms of Vickers hardness, the area fraction of precipitates, microstructure and phase composition. The solution treatments were performed by treating at 520 °C, 550 °C and 580 °C in argon atmosphere. The outcomes show that the hardness of the solutionized alloys was slightly affected by the solution temperature. X-ray diffraction and image analysis revealed that the complete dissolution of precipitates was not possible, neither for Elektron21 (El21) nor for its AlN containing nanocomposites. The ageing treatment of El21 led to a significant improvement in hardness after 20 h, while for longer times, it progressively decreased. The effect of ageing on the hardness of El21–AlN composites was found to be much less than this effect on the hardness of the host alloy. Electron backscatter diffraction (EBSD) analysis of El21 and El21–1%AlN after solution treatment confirm the random orientation of grains with a typical texture of random distribution. The as-cast creep results showed that the incorporation of nanoparticles could effectively improve the creep properties, while the results after solution treatment at 520 °C for 12 h followed by ageing treatment at 200 °C for 20 h confirmed that the minimum creep rate of T6-El21 was almost equal to the as-cast El21–AlN. MDPI 2017-12-02 /pmc/articles/PMC5744315/ /pubmed/29207461 http://dx.doi.org/10.3390/ma10121380 Text en © 2017 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
Saboori, Abdollah
Padovano, Elisa
Pavese, Matteo
Dieringa, Hajo
Badini, Claudio
Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
title Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
title_full Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
title_fullStr Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
title_full_unstemmed Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
title_short Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
title_sort effect of solution treatment on precipitation behaviors, age hardening response and creep properties of elektron21 alloy reinforced by aln nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5744315/
https://www.ncbi.nlm.nih.gov/pubmed/29207461
http://dx.doi.org/10.3390/ma10121380
work_keys_str_mv AT sabooriabdollah effectofsolutiontreatmentonprecipitationbehaviorsagehardeningresponseandcreeppropertiesofelektron21alloyreinforcedbyalnnanoparticles
AT padovanoelisa effectofsolutiontreatmentonprecipitationbehaviorsagehardeningresponseandcreeppropertiesofelektron21alloyreinforcedbyalnnanoparticles
AT pavesematteo effectofsolutiontreatmentonprecipitationbehaviorsagehardeningresponseandcreeppropertiesofelektron21alloyreinforcedbyalnnanoparticles
AT dieringahajo effectofsolutiontreatmentonprecipitationbehaviorsagehardeningresponseandcreeppropertiesofelektron21alloyreinforcedbyalnnanoparticles
AT badiniclaudio effectofsolutiontreatmentonprecipitationbehaviorsagehardeningresponseandcreeppropertiesofelektron21alloyreinforcedbyalnnanoparticles