Effect of Copper Addition on Precipitation Behavior near Grain Boundary in Al–Zn–Mg Alloy

Matsuda, Kenji; Yasumoto, Toru; Bendo, Artenis et al.

MATERIALS TRANSACTIONS, 2019, 60(8), 1688-1696

Permalink : https://hdl.handle.net/2115/76658

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論文情報

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アクセス権
open access
URI
https://hdl.handle.net/2115/76658
タイトル
Effect of Copper Addition on Precipitation Behavior near Grain Boundary in Al–Zn–Mg Alloy
著者
Matsuda, Kenji ; Yasumoto, Toru ; Bendo, Artenis ; Tsuchiya, Taiki ; Lee, Seungwon ; Nishimura, Katsuhiko ; Nunomura, Norio ; Marioara, Calin D. ; Levik, Adrian ; Holmestad, Randi ; Toda, Hiroyuki ; Yamaguchi, Masatake ; Ikeda, Ken-ichi ; Homma, Tomoyuki ; Ikeno, Susumu
著者名
Matsuda, Kenji
著者名
Yasumoto, Toru
著者名
Bendo, Artenis
著者名
Tsuchiya, Taiki
著者名
Lee, Seungwon
著者名
Nishimura, Katsuhiko
著者名
Nunomura, Norio
著者名
Marioara, Calin D.
著者名
Levik, Adrian
著者名
Holmestad, Randi
著者名
Toda, Hiroyuki
著者名
Yamaguchi, Masatake
e-Rad_Researcher
50080164
著者名
Ikeda, Ken-ichi
著者名
Homma, Tomoyuki
著者名
Ikeno, Susumu
言語
英語
キーワード
aluminum-zinc-magnesium alloy
precipitation
copper addition
clusters
transmission electron microscopy
発行日
2019-08-01
出版者
The Japan Institute of Light Metals
日本金属学会
収録物名
MATERIALS TRANSACTIONS
巻(号)
60(8)
ページ
1688-1696
抄録
The effect of Cu-addition on age-hardening and precipitation have been investigated by hardness measurement, tensile test, high resolution transmission electron microscopy (HRTEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) techniques. Higher hardness, strength, and lower elongation were caused by increasing amount of Zn + Mg because of increased number density of precipitates. Cu addition also provided even higher peak hardness, strength, and lower elongation. The alloy containing highest Cu content had fine precipitates of GPB-II zones or the second clusters, in the precipitate free zones (PFZs) and the matrix, together with η′/η in the matrix from the early stage of aging. Two regions have been confirmed as the PFZs in the peak aged alloy containing highest Cu: (i) nearest to grain boundary (GB) about 70 nm in width (n-PFZ) and (ii) conventional PFZ about 400 nm in width which can be confirmed by conventional TEM (con-PFZ). The con-PFZ contains fine precipitates consisting of GPB-II zones or the second clusters, even for 2 minutes of aging at 473 K which were not present in the n-PFZ. The fine precipitates, GPB-II zones or the second clusters in the con-PFZ and the matrix disappeared at overaged condition.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
1345-9678
EISSN
1347-5320
NCID
AA1151294X
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.2320/matertrans.L-M2019828