The possible transition mechanism for the meta-stable phase in the 7xxx aluminium

Artenis Bendo; Kenji Matsuda; Katsuhiko Nishimura; Norio Nunomura; Taiki Tsuchiya; Seungwon Lee; Calin D. Marioara; Tomohito Tsuru; Masatake Yamaguchi; Kazuyuki Shimizu; Hiroyuki Toda

doi:10.1080/02670836.2020.1821323

The possible transition mechanism for the meta-stable phase in the 7xxx aluminium

Artenis Bendo^*, Kenji Matsuda, Katsuhiko Nishimura, Norio Nunomura, Taiki Tsuchiya, Seungwon Lee, Calin D. Marioara, Tomohito Tsuru, Masatake Yamaguchi, Kazuyuki Shimizu, Hiroyuki Toda

^*Corresponding author for this work

Materials Design and Engineering

Research output: Contribution to journal › Review article › peer-review

13 Citations (SciVal)

Abstract

Metastable phases in aluminium alloys are the primary nano-scale precipitates which have the biggest contribution to the increase in the tangible mechanical properties. The continuous increase in hardness in the 7xxx aluminium alloys is associated with the phase transformation from clusters or GP-zones to the metastable η′ phase. The high-resolution electron imaging is used to observe the precipitates and reconstruct a kinetic model that might explain the transformation. This work is an attempt to gain insight into how the structural transformation may occur based on the shortest route of diffusion for the eventual structure to result in that of the η′ phase.

Original language	English
Pages (from-to)	1621-1627
Number of pages	7
Journal	Materials Science and Technology
Volume	36
Issue number	15
DOIs	https://doi.org/10.1080/02670836.2020.1821323
State	Published - 2020/10/12

Keywords

Ageing
Al-Zn-Mg-Cu alloy
Aluminum alloy
High resolution imaging
Phase transformation
Precipitation
STEM
TEM

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1080/02670836.2020.1821323

Cite this

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title = "The possible transition mechanism for the meta-stable phase in the 7xxx aluminium",

abstract = "Metastable phases in aluminium alloys are the primary nano-scale precipitates which have the biggest contribution to the increase in the tangible mechanical properties. The continuous increase in hardness in the 7xxx aluminium alloys is associated with the phase transformation from clusters or GP-zones to the metastable η′ phase. The high-resolution electron imaging is used to observe the precipitates and reconstruct a kinetic model that might explain the transformation. This work is an attempt to gain insight into how the structural transformation may occur based on the shortest route of diffusion for the eventual structure to result in that of the η′ phase.",

keywords = "Ageing, Al-Zn-Mg-Cu alloy, Aluminum alloy, High resolution imaging, Phase transformation, Precipitation, STEM, TEM",

author = "Artenis Bendo and Kenji Matsuda and Katsuhiko Nishimura and Norio Nunomura and Taiki Tsuchiya and Seungwon Lee and Marioara, {Calin D.} and Tomohito Tsuru and Masatake Yamaguchi and Kazuyuki Shimizu and Hiroyuki Toda",

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doi = "10.1080/02670836.2020.1821323",

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AU - Bendo, Artenis

AU - Matsuda, Kenji

AU - Nishimura, Katsuhiko

AU - Nunomura, Norio

AU - Tsuchiya, Taiki

AU - Lee, Seungwon

AU - Marioara, Calin D.

AU - Tsuru, Tomohito

AU - Yamaguchi, Masatake

AU - Shimizu, Kazuyuki

AU - Toda, Hiroyuki

PY - 2020/10/12

Y1 - 2020/10/12

N2 - Metastable phases in aluminium alloys are the primary nano-scale precipitates which have the biggest contribution to the increase in the tangible mechanical properties. The continuous increase in hardness in the 7xxx aluminium alloys is associated with the phase transformation from clusters or GP-zones to the metastable η′ phase. The high-resolution electron imaging is used to observe the precipitates and reconstruct a kinetic model that might explain the transformation. This work is an attempt to gain insight into how the structural transformation may occur based on the shortest route of diffusion for the eventual structure to result in that of the η′ phase.

AB - Metastable phases in aluminium alloys are the primary nano-scale precipitates which have the biggest contribution to the increase in the tangible mechanical properties. The continuous increase in hardness in the 7xxx aluminium alloys is associated with the phase transformation from clusters or GP-zones to the metastable η′ phase. The high-resolution electron imaging is used to observe the precipitates and reconstruct a kinetic model that might explain the transformation. This work is an attempt to gain insight into how the structural transformation may occur based on the shortest route of diffusion for the eventual structure to result in that of the η′ phase.

KW - Ageing

KW - Al-Zn-Mg-Cu alloy

KW - Aluminum alloy

KW - High resolution imaging

KW - Phase transformation

KW - Precipitation

KW - STEM

KW - TEM

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JO - Materials Science and Technology

JF - Materials Science and Technology

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The possible transition mechanism for the meta-stable phase in the 7xxx aluminium

Abstract

Keywords

ASJC Scopus subject areas

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