Three-dimensional imaging of a long-period stacking ordered phase in Mg97Zn1Gd2 using high-voltage electron microscopy

Kazuhisa Sato; Shunya Tashiro; Yohei Yamaguchi; Takanori Kiguchi; Toyohiko J. Konno; Tomokazu Yamamoto; Kazuhiro Yasuda; Syo Matsumura

doi:10.2320/matertrans.M2016021

Three-dimensional imaging of a long-period stacking ordered phase in Mg₉₇Zn₁Gd₂ using high-voltage electron microscopy

Kazuhisa Sato, Shunya Tashiro, Yohei Yamaguchi, Takanori Kiguchi, Toyohiko J. Konno, Tomokazu Yamamoto, Kazuhiro Yasuda, Syo Matsumura

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Spatial configurations and lateral morphology of the 14H long-period stacking ordered (LPSO) phase have been studied by single tilt-axis electron tomography using high-voltage scanning transmission electron microscopy (STEM) operated at 1 MV. A "Quonset hut-like" lateral shape of the LPSO was found in a tomogram of a specimen as thick as 1.7 μ m. The reconstructed volume reveals spatial distribution of residual particulate precipitates of (Mg, Zn)₃Gd phase 20-30 nm in diameters. The precipitates act as a source of solute elements for the formation and growth processes of 14H LPSO. 1 MV-STEM realizes enough resolution for imaging the morphology of LPSO as well as high electron transmittance (∼4.1 μ m) without any obvious electron irradiation damages on microstructures.

Original language	English
Pages (from-to)	918-921
Number of pages	4
Journal	Materials Transactions
Volume	57
Issue number	6
DOIs	https://doi.org/10.2320/matertrans.M2016021
Publication status	Published - 2016

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Three-dimensional imaging of a long-period stacking ordered phase in Mg97Zn1Gd2 using high-voltage electron microscopy",

abstract = "Spatial configurations and lateral morphology of the 14H long-period stacking ordered (LPSO) phase have been studied by single tilt-axis electron tomography using high-voltage scanning transmission electron microscopy (STEM) operated at 1 MV. A {"}Quonset hut-like{"} lateral shape of the LPSO was found in a tomogram of a specimen as thick as 1.7 μ m. The reconstructed volume reveals spatial distribution of residual particulate precipitates of (Mg, Zn)3Gd phase 20-30 nm in diameters. The precipitates act as a source of solute elements for the formation and growth processes of 14H LPSO. 1 MV-STEM realizes enough resolution for imaging the morphology of LPSO as well as high electron transmittance (∼4.1 μ m) without any obvious electron irradiation damages on microstructures.",

author = "Kazuhisa Sato and Shunya Tashiro and Yohei Yamaguchi and Takanori Kiguchi and Konno, {Toyohiko J.} and Tomokazu Yamamoto and Kazuhiro Yasuda and Syo Matsumura",

note = "Publisher Copyright: {\textcopyright} 2016 The Japan Institute of Metals and Materials.",

year = "2016",

doi = "10.2320/matertrans.M2016021",

language = "English",

volume = "57",

pages = "918--921",

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T1 - Three-dimensional imaging of a long-period stacking ordered phase in Mg97Zn1Gd2 using high-voltage electron microscopy

AU - Sato, Kazuhisa

AU - Tashiro, Shunya

AU - Yamaguchi, Yohei

AU - Kiguchi, Takanori

AU - Konno, Toyohiko J.

AU - Yamamoto, Tomokazu

AU - Yasuda, Kazuhiro

AU - Matsumura, Syo

PY - 2016

Y1 - 2016

N2 - Spatial configurations and lateral morphology of the 14H long-period stacking ordered (LPSO) phase have been studied by single tilt-axis electron tomography using high-voltage scanning transmission electron microscopy (STEM) operated at 1 MV. A "Quonset hut-like" lateral shape of the LPSO was found in a tomogram of a specimen as thick as 1.7 μ m. The reconstructed volume reveals spatial distribution of residual particulate precipitates of (Mg, Zn)3Gd phase 20-30 nm in diameters. The precipitates act as a source of solute elements for the formation and growth processes of 14H LPSO. 1 MV-STEM realizes enough resolution for imaging the morphology of LPSO as well as high electron transmittance (∼4.1 μ m) without any obvious electron irradiation damages on microstructures.

AB - Spatial configurations and lateral morphology of the 14H long-period stacking ordered (LPSO) phase have been studied by single tilt-axis electron tomography using high-voltage scanning transmission electron microscopy (STEM) operated at 1 MV. A "Quonset hut-like" lateral shape of the LPSO was found in a tomogram of a specimen as thick as 1.7 μ m. The reconstructed volume reveals spatial distribution of residual particulate precipitates of (Mg, Zn)3Gd phase 20-30 nm in diameters. The precipitates act as a source of solute elements for the formation and growth processes of 14H LPSO. 1 MV-STEM realizes enough resolution for imaging the morphology of LPSO as well as high electron transmittance (∼4.1 μ m) without any obvious electron irradiation damages on microstructures.

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Three-dimensional imaging of a long-period stacking ordered phase in Mg₉₇Zn₁Gd₂ using high-voltage electron microscopy

Abstract

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