Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy

Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the β-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that...

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Detalles Bibliográficos
Autores principales: Zhu, Hongmei, Sha, Gang, Liu, Jiangwen, Liu, Hongwei, Wu, Cuilan, Luo, Chengping, Liu, Zongwen, Zheng, Rongkun, Ringer, Simon P
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2012
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3431999/
https://www.ncbi.nlm.nih.gov/pubmed/22682092
http://dx.doi.org/10.1186/1556-276X-7-300
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author Zhu, Hongmei
Sha, Gang
Liu, Jiangwen
Liu, Hongwei
Wu, Cuilan
Luo, Chengping
Liu, Zongwen
Zheng, Rongkun
Ringer, Simon P
author_facet Zhu, Hongmei
Sha, Gang
Liu, Jiangwen
Liu, Hongwei
Wu, Cuilan
Luo, Chengping
Liu, Zongwen
Zheng, Rongkun
Ringer, Simon P
author_sort Zhu, Hongmei
collection PubMed
description Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the β-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that the nanoscale Zr-rich [0001](α) rods/laths are dominant in the Zr-rich core regions of the as-quenched sample after a solution treatment at 430°C. More significantly, these Zr-rich particles served as favourable sites for heterogeneous nucleation of the Zn-rich β-type phase during subsequent isothermal ageing at 180°C. This research provides a potential route to engineer precipitate microstructure for better strengthening effect in the Zr-containing Mg alloys.
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spelling pubmed-34319992012-09-05 Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy Zhu, Hongmei Sha, Gang Liu, Jiangwen Liu, Hongwei Wu, Cuilan Luo, Chengping Liu, Zongwen Zheng, Rongkun Ringer, Simon P Nanoscale Res Lett Nano Express Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the β-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that the nanoscale Zr-rich [0001](α) rods/laths are dominant in the Zr-rich core regions of the as-quenched sample after a solution treatment at 430°C. More significantly, these Zr-rich particles served as favourable sites for heterogeneous nucleation of the Zn-rich β-type phase during subsequent isothermal ageing at 180°C. This research provides a potential route to engineer precipitate microstructure for better strengthening effect in the Zr-containing Mg alloys. Springer 2012-06-08 /pmc/articles/PMC3431999/ /pubmed/22682092 http://dx.doi.org/10.1186/1556-276X-7-300 Text en Copyright ©2012 Zhu et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Zhu, Hongmei
Sha, Gang
Liu, Jiangwen
Liu, Hongwei
Wu, Cuilan
Luo, Chengping
Liu, Zongwen
Zheng, Rongkun
Ringer, Simon P
Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy
title Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy
title_full Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy
title_fullStr Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy
title_full_unstemmed Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy
title_short Heterogeneous nucleation of β-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy
title_sort heterogeneous nucleation of β-type precipitates on nanoscale zr-rich particles in a mg-6zn-0.5cu-0.6zr alloy
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3431999/
https://www.ncbi.nlm.nih.gov/pubmed/22682092
http://dx.doi.org/10.1186/1556-276X-7-300
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