Microstructure Observation of Al-Zn-Mg Alloy with High Mg Content

Abrar Ahmed; Seungwon Lee; Taiki Tsuchiya; Kenji Matsuda; Katsuhiko Nishimura; Norio Numomura; Hiroyuki Toda; Kyotusuke Hirayama; Kazuyuki Shimizu; Masatake Yamaguchi; Tomohito Tsuru; Mitsuhiro Itakura

doi:10.4028/p-Oa8beF

Microstructure Observation of Al-Zn-Mg Alloy with High Mg Content

Abrar Ahmed, Seungwon Lee, Taiki Tsuchiya, Kenji Matsuda, Katsuhiko Nishimura, Norio Numomura, Hiroyuki Toda, Kyotusuke Hirayama, Kazuyuki Shimizu, Masatake Yamaguchi, Tomohito Tsuru, Mitsuhiro Itakura

Materials Design and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

The microstructure and mechanical properties of Al-Zn-Mg alloys with low Zn/Mg ratios have been studied. According to various researchers, the major strengthening is due to η-phase and T phase. There are many briefly research on the microstructure and interface of the η-phase types but not briefly information about the T-phase That’s why now our aim to work on T-phase. In actual our aim is to observe the T-phase interface. The MgZn₂ phase (η phase) and its metastable phase (η′ phase) were the most prominent precipitates. Another study revealed various Mg₃₂(Al, Zn)₄₉ phases (T phase) and their metastable phase (T′ phase) in Al-Zn-Mg alloys with low Zn and high Mg content. Al-Zn-Mg alloys with a Zn/Mg ratio of 0.71 were explored for this study. The alloy with a Zn/Mg ratio of 0.71 aged at 473k for 2000 minutes exhibited the highest hardness, according to the observations. The strengthening precipitates in the investigated alloy were totally T′ phase, according to TEM observation.

Original language	English
Title of host publication	Solid State Phenomena
Publisher	Trans Tech Publications Ltd
Pages	73-77
Number of pages	5
DOIs	https://doi.org/10.4028/p-Oa8beF
State	Published - 2023

Publication series

Name	Solid State Phenomena
Volume	353
ISSN (Print)	1012-0394
ISSN (Electronic)	1662-9779

Keywords

metastable phase
Microstructure
precipitate
strengthening
T’ phase

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

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10.4028/p-Oa8beF

Cite this

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abstract = "The microstructure and mechanical properties of Al-Zn-Mg alloys with low Zn/Mg ratios have been studied. According to various researchers, the major strengthening is due to η-phase and T phase. There are many briefly research on the microstructure and interface of the η-phase types but not briefly information about the T-phase That{\textquoteright}s why now our aim to work on T-phase. In actual our aim is to observe the T-phase interface. The MgZn2 phase (η phase) and its metastable phase (η′ phase) were the most prominent precipitates. Another study revealed various Mg32(Al, Zn)49 phases (T phase) and their metastable phase (T′ phase) in Al-Zn-Mg alloys with low Zn and high Mg content. Al-Zn-Mg alloys with a Zn/Mg ratio of 0.71 were explored for this study. The alloy with a Zn/Mg ratio of 0.71 aged at 473k for 2000 minutes exhibited the highest hardness, according to the observations. The strengthening precipitates in the investigated alloy were totally T′ phase, according to TEM observation.",

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AU - Ahmed, Abrar

AU - Lee, Seungwon

AU - Tsuchiya, Taiki

AU - Matsuda, Kenji

AU - Nishimura, Katsuhiko

AU - Numomura, Norio

AU - Toda, Hiroyuki

AU - Hirayama, Kyotusuke

AU - Shimizu, Kazuyuki

AU - Yamaguchi, Masatake

AU - Tsuru, Tomohito

AU - Itakura, Mitsuhiro

PY - 2023

Y1 - 2023

N2 - The microstructure and mechanical properties of Al-Zn-Mg alloys with low Zn/Mg ratios have been studied. According to various researchers, the major strengthening is due to η-phase and T phase. There are many briefly research on the microstructure and interface of the η-phase types but not briefly information about the T-phase That’s why now our aim to work on T-phase. In actual our aim is to observe the T-phase interface. The MgZn2 phase (η phase) and its metastable phase (η′ phase) were the most prominent precipitates. Another study revealed various Mg32(Al, Zn)49 phases (T phase) and their metastable phase (T′ phase) in Al-Zn-Mg alloys with low Zn and high Mg content. Al-Zn-Mg alloys with a Zn/Mg ratio of 0.71 were explored for this study. The alloy with a Zn/Mg ratio of 0.71 aged at 473k for 2000 minutes exhibited the highest hardness, according to the observations. The strengthening precipitates in the investigated alloy were totally T′ phase, according to TEM observation.

AB - The microstructure and mechanical properties of Al-Zn-Mg alloys with low Zn/Mg ratios have been studied. According to various researchers, the major strengthening is due to η-phase and T phase. There are many briefly research on the microstructure and interface of the η-phase types but not briefly information about the T-phase That’s why now our aim to work on T-phase. In actual our aim is to observe the T-phase interface. The MgZn2 phase (η phase) and its metastable phase (η′ phase) were the most prominent precipitates. Another study revealed various Mg32(Al, Zn)49 phases (T phase) and their metastable phase (T′ phase) in Al-Zn-Mg alloys with low Zn and high Mg content. Al-Zn-Mg alloys with a Zn/Mg ratio of 0.71 were explored for this study. The alloy with a Zn/Mg ratio of 0.71 aged at 473k for 2000 minutes exhibited the highest hardness, according to the observations. The strengthening precipitates in the investigated alloy were totally T′ phase, according to TEM observation.

KW - metastable phase

KW - Microstructure

KW - precipitate

KW - strengthening

KW - T’ phase

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EP - 77

BT - Solid State Phenomena

PB - Trans Tech Publications Ltd

ER -

Microstructure Observation of Al-Zn-Mg Alloy with High Mg Content

Abstract

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Keywords

ASJC Scopus subject areas

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