Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd

Abstract Atom probe tomography (APT) and transmission electron microscopy (TEM)/scanning transmission electron microscopy (STEM) have been used correlatively to explore atomic-scale local structure and chemistry of the exactly same area in the vicinity of growth front of a long-period stacking order...

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Autores principales:	Koji Inoue, Kenta Yoshida, Yasuyoshi Nagai, Kyosuke Kishida, Haruyuki Inui
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e72b20d3fb2549d4b6d9a516f35abf04
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spelling	oai:doaj.org-article:e72b20d3fb2549d4b6d9a516f35abf042021-12-02T14:06:57ZCorrelative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd10.1038/s41598-021-82705-32045-2322https://doaj.org/article/e72b20d3fb2549d4b6d9a516f35abf042021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82705-3https://doaj.org/toc/2045-2322Abstract Atom probe tomography (APT) and transmission electron microscopy (TEM)/scanning transmission electron microscopy (STEM) have been used correlatively to explore atomic-scale local structure and chemistry of the exactly same area in the vicinity of growth front of a long-period stacking ordered (LPSO) phase in a ternary Mg–Al–Gd alloy. It is proved for the first time that enrichment of Gd atoms in four consecutive (0001) atomic layers precedes enrichment of Al atoms so that the formation of Al6Gd8 clusters occurs only after sufficient Al atoms to form Al6Gd8 clusters diffuse into the relevant portions. Lateral growth of the LPSO phase is found to occur by ‘ledge’ mechanism with the growth habit plane either {1 $$\overline{1}$$ 1 ¯ 00} or {11 $$\overline{2}$$ 2 ¯ 0} planes. The motion of ledges that give rise to lateral growth of the LPSO phase is considered to be controlled by diffusion of Al atoms.Koji InoueKenta YoshidaYasuyoshi NagaiKyosuke KishidaHaruyuki InuiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Koji Inoue Kenta Yoshida Yasuyoshi Nagai Kyosuke Kishida Haruyuki Inui Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd
description	Abstract Atom probe tomography (APT) and transmission electron microscopy (TEM)/scanning transmission electron microscopy (STEM) have been used correlatively to explore atomic-scale local structure and chemistry of the exactly same area in the vicinity of growth front of a long-period stacking ordered (LPSO) phase in a ternary Mg–Al–Gd alloy. It is proved for the first time that enrichment of Gd atoms in four consecutive (0001) atomic layers precedes enrichment of Al atoms so that the formation of Al6Gd8 clusters occurs only after sufficient Al atoms to form Al6Gd8 clusters diffuse into the relevant portions. Lateral growth of the LPSO phase is found to occur by ‘ledge’ mechanism with the growth habit plane either {1 $$\overline{1}$$ 1 ¯ 00} or {11 $$\overline{2}$$ 2 ¯ 0} planes. The motion of ledges that give rise to lateral growth of the LPSO phase is considered to be controlled by diffusion of Al atoms.
format	article
author	Koji Inoue Kenta Yoshida Yasuyoshi Nagai Kyosuke Kishida Haruyuki Inui
author_facet	Koji Inoue Kenta Yoshida Yasuyoshi Nagai Kyosuke Kishida Haruyuki Inui
author_sort	Koji Inoue
title	Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd
title_short	Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd
title_full	Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd
title_fullStr	Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd
title_full_unstemmed	Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd
title_sort	correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of lpso phase in mg alloy containing al and gd
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e72b20d3fb2549d4b6d9a516f35abf04
work_keys_str_mv	AT kojiinoue correlativeatomprobetomographyandscanningtransmissionelectronmicroscopyrevealgrowthsequenceoflpsophaseinmgalloycontainingalandgd AT kentayoshida correlativeatomprobetomographyandscanningtransmissionelectronmicroscopyrevealgrowthsequenceoflpsophaseinmgalloycontainingalandgd AT yasuyoshinagai correlativeatomprobetomographyandscanningtransmissionelectronmicroscopyrevealgrowthsequenceoflpsophaseinmgalloycontainingalandgd AT kyosukekishida correlativeatomprobetomographyandscanningtransmissionelectronmicroscopyrevealgrowthsequenceoflpsophaseinmgalloycontainingalandgd AT haruyukiinui correlativeatomprobetomographyandscanningtransmissionelectronmicroscopyrevealgrowthsequenceoflpsophaseinmgalloycontainingalandgd
_version_	1718391996589015040

Correlative atom probe tomography and scanning transmission electron microscopy reveal growth sequence of LPSO phase in Mg alloy containing Al and Gd

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