Effect of copper on fine precipitates at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn) 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:10.2464/jilm.67.186

Effect of copper on fine precipitates at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn) 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

2 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 were not observed 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)	186-192
Number of pages	7
Journal	Keikinzoku/Journal of Japan Institute of Light Metals
Volume	67
Issue number	5
DOIs	https://doi.org/10.2464/jilm.67.186
State	Published - 2017

Keywords

Aluminum alloys
Clusters
Copper addition
Electron diffraction pattern
Precipitation

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2464/jilm.67.186

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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). Effect of copper on fine precipitates at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn) alloys. Keikinzoku/Journal of Japan Institute of Light Metals, 67(5), 186-192. https://doi.org/10.2464/jilm.67.186

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title = "Effect of copper on fine precipitates at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn) 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 were not observed 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",

year = "2017",

doi = "10.2464/jilm.67.186",

language = "英語",

volume = "67",

pages = "186--192",

journal = "Keikinzoku/Journal of Japan Institute of Light Metals",

issn = "0451-5994",

publisher = "Keikinzoku Gakkai/Japan Institute of Light Metals",

number = "5",

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TY - JOUR

T1 - Effect of copper on fine precipitates at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn) 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 were not observed 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 were not observed 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 - 10.2464/jilm.67.186

DO - 10.2464/jilm.67.186

M3 - 学術論文

AN - SCOPUS:85021805448

SN - 0451-5994

VL - 67

SP - 186

EP - 192

JO - Keikinzoku/Journal of Japan Institute of Light Metals

JF - Keikinzoku/Journal of Japan Institute of Light Metals

IS - 5

ER -

Effect of copper on fine precipitates at the early stage of aging in Al-Mg-X (X=Si, Ge, Zn) alloys

Abstract

Keywords

ASJC Scopus subject areas

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