TY - JOUR
T1 - Atomic scale HAADF-STEM study of η′ and η 1 phases in peak-aged Al–Zn–Mg alloys
AU - Bendo, Artenis
AU - Matsuda, Kenji
AU - Lee, Seungwon
AU - Nishimura, Katsuhiko
AU - Nunomura, Norio
AU - Toda, Hiroyuki
AU - Yamaguchi, Masatake
AU - Tsuru, Tomohito
AU - Hirayama, Kyosuke
AU - Shimizu, Kazuyuki
AU - Gao, Hongye
AU - Ebihara, Kenichi
AU - Itakura, Mitsuhiro
AU - Yoshida, Tomoo
AU - Murakami, Satoshi
N1 - Funding Information:
This work was supported by JST (Japan Science and Technology Agency) under collaborative research based on industrial demand ‘‘Heterogeneous Structure Control’’: Toward innovative development of metallic structural materials. The authors also acknowledge Dr. Junya Nakamura, Mr. Ryoma Arita and Prof. emeritus Susumu Ikeno, University of Toyama. A part of this research was supported by President description, University of Toyama (2017).
Publisher Copyright:
© 2017, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - The microstructures of precipitates in Al–Zn–Mg alloys in peak-aged condition have been studied using scanning transmission electron microscope. The same thermo-mechanical treatment was applied in all alloys. Investigation of peak-aged samples revealed that the most commonly found phases were η′ and η1 with their respective habit planes on {111}Al and {100}Al. η′ phases under [110]Al were analyzed and compared with η′ structure models. Furthermore, a close inspection of η1 phase as the second most found precipitate revealed that it incorporates an anti-phase resembling boundary, not observed in other orientation relationships that precipitates create with Al matrix, in addition, differences in matrix-precipitate interfaces between η′/η2 and η1 phases were noticed. This paper addresses the first part to the analysis of η′ phase. Next part is extended to the analysis of the η1 phase.
AB - The microstructures of precipitates in Al–Zn–Mg alloys in peak-aged condition have been studied using scanning transmission electron microscope. The same thermo-mechanical treatment was applied in all alloys. Investigation of peak-aged samples revealed that the most commonly found phases were η′ and η1 with their respective habit planes on {111}Al and {100}Al. η′ phases under [110]Al were analyzed and compared with η′ structure models. Furthermore, a close inspection of η1 phase as the second most found precipitate revealed that it incorporates an anti-phase resembling boundary, not observed in other orientation relationships that precipitates create with Al matrix, in addition, differences in matrix-precipitate interfaces between η′/η2 and η1 phases were noticed. This paper addresses the first part to the analysis of η′ phase. Next part is extended to the analysis of the η1 phase.
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U2 - 10.1007/s10853-017-1873-0
DO - 10.1007/s10853-017-1873-0
M3 - Article
AN - SCOPUS:85037688585
SN - 0022-2461
VL - 53
SP - 4598
EP - 4611
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 6
ER -