Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys

Kenji Matsuda; Akihiro Kawai; Katsumi Watanabe; Seungwon Lee; Calin D. Marioara; Sigurd Wenner; Katsuhiko Nishimura; Teiichiro Matsuzaki; Norio Nunomura; Tatsuo Sato; Randi Holmestad; Susumu Ikeno

doi:10.2320/matertrans.L-M2016839

Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys

Kenji Matsuda, Akihiro Kawai, Katsumi Watanabe, Seungwon Lee, Calin D. Marioara, Sigurd Wenner, Katsuhiko Nishimura, Teiichiro Matsuzaki, Norio Nunomura, Tatsuo Sato, Randi Holmestad, Susumu Ikeno

Materials Design and Engineering

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

20 Scopus citations

Abstract

Age-hardenable Al-Mg-Si, Al-Mg-Ge, and Al-Zn-Mg alloys including Cu were investigated by transmission electron microscopy to understand extra diffraction spots that appear in their selected area electron diffraction patterns. These alloys containing Cu exhibit similar extra diffracted spots to each other with diffracted spots or streaks for Al matrix and major precipitates in each alloy. The extra spots cannot be confirmed in Cu-free alloys. The initial cluster, which is based on the β″-phase in the Al-Mg-Si alloy, is proposed to be MgSi(/Ge)Mg, CuMgSi(/Ge), AlCuMg, and AlZnMg, while the second clusters, which consist of three initial clusters including anti-phase boundary short-range order, are proposed for Cu-containing alloys.

Original language	English
Pages (from-to)	167-175
Number of pages	9
Journal	Materials Transactions
Volume	58
Issue number	2
DOIs	https://doi.org/10.2320/matertrans.L-M2016839
State	Published - 2017

Keywords

Aluminum alloys
Clusters
Copper addition
Electron diffraction pattern
Precipitation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.L-M2016839

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Matsuda, K., Kawai, A., Watanabe, K., Lee, S., Marioara, C. D., Wenner, S., Nishimura, K., Matsuzaki, T., Nunomura, N., Sato, T., Holmestad, R., & Ikeno, S. (2017). Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys. Materials Transactions, 58(2), 167-175. https://doi.org/10.2320/matertrans.L-M2016839

@article{e7205ad246a34984a1e8ef4313c238e7,

title = "Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys",

abstract = "Age-hardenable Al-Mg-Si, Al-Mg-Ge, and Al-Zn-Mg alloys including Cu were investigated by transmission electron microscopy to understand extra diffraction spots that appear in their selected area electron diffraction patterns. These alloys containing Cu exhibit similar extra diffracted spots to each other with diffracted spots or streaks for Al matrix and major precipitates in each alloy. The extra spots cannot be confirmed in Cu-free alloys. The initial cluster, which is based on the β″-phase in the Al-Mg-Si alloy, is proposed to be MgSi(/Ge)Mg, CuMgSi(/Ge), AlCuMg, and AlZnMg, while the second clusters, which consist of three initial clusters including anti-phase boundary short-range order, are proposed for Cu-containing alloys.",

keywords = "Aluminum alloys, Clusters, Copper addition, Electron diffraction pattern, Precipitation",

author = "Kenji Matsuda and Akihiro Kawai and Katsumi Watanabe and Seungwon Lee and Marioara, {Calin D.} and Sigurd Wenner and Katsuhiko Nishimura and Teiichiro Matsuzaki and Norio Nunomura and Tatsuo Sato and Randi Holmestad and Susumu Ikeno",

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

year = "2017",

doi = "10.2320/matertrans.L-M2016839",

language = "英語",

volume = "58",

pages = "167--175",

journal = "Materials Transactions",

issn = "1345-9678",

publisher = "Japan Institute of Metals (JIM)",

number = "2",

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Matsuda, K, Kawai, A, Watanabe, K, Lee, S, Marioara, CD, Wenner, S, Nishimura, K, Matsuzaki, T, Nunomura, N, Sato, T, Holmestad, R & Ikeno, S 2017, 'Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys', Materials Transactions, vol. 58, no. 2, pp. 167-175. https://doi.org/10.2320/matertrans.L-M2016839

TY - JOUR

T1 - Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys

AU - Matsuda, Kenji

AU - Kawai, Akihiro

AU - Watanabe, Katsumi

AU - Lee, Seungwon

AU - Marioara, Calin D.

AU - Wenner, Sigurd

AU - Nishimura, Katsuhiko

AU - Matsuzaki, Teiichiro

AU - Nunomura, Norio

AU - Sato, Tatsuo

AU - Holmestad, Randi

AU - Ikeno, Susumu

PY - 2017

Y1 - 2017

N2 - Age-hardenable Al-Mg-Si, Al-Mg-Ge, and Al-Zn-Mg alloys including Cu were investigated by transmission electron microscopy to understand extra diffraction spots that appear in their selected area electron diffraction patterns. These alloys containing Cu exhibit similar extra diffracted spots to each other with diffracted spots or streaks for Al matrix and major precipitates in each alloy. The extra spots cannot be confirmed in Cu-free alloys. The initial cluster, which is based on the β″-phase in the Al-Mg-Si alloy, is proposed to be MgSi(/Ge)Mg, CuMgSi(/Ge), AlCuMg, and AlZnMg, while the second clusters, which consist of three initial clusters including anti-phase boundary short-range order, are proposed for Cu-containing alloys.

AB - Age-hardenable Al-Mg-Si, Al-Mg-Ge, and Al-Zn-Mg alloys including Cu were investigated by transmission electron microscopy to understand extra diffraction spots that appear in their selected area electron diffraction patterns. These alloys containing Cu exhibit similar extra diffracted spots to each other with diffracted spots or streaks for Al matrix and major precipitates in each alloy. The extra spots cannot be confirmed in Cu-free alloys. The initial cluster, which is based on the β″-phase in the Al-Mg-Si alloy, is proposed to be MgSi(/Ge)Mg, CuMgSi(/Ge), AlCuMg, and AlZnMg, while the second clusters, which consist of three initial clusters including anti-phase boundary short-range order, are proposed for Cu-containing alloys.

KW - Aluminum alloys

KW - Clusters

KW - Copper addition

KW - Electron diffraction pattern

KW - Precipitation

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U2 - 10.2320/matertrans.L-M2016839

DO - 10.2320/matertrans.L-M2016839

M3 - 学術論文

AN - SCOPUS:85011805118

SN - 1345-9678

VL - 58

SP - 167

EP - 175

JO - Materials Transactions

JF - Materials Transactions

IS - 2

ER -

Extra electron diffraction spots caused by fine precipitates formed at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn)-Cu alloys

Abstract

Keywords

ASJC Scopus subject areas

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