Development of a high-strength Al-Zn-Mg-Cu-based alloy via multi-strengthening mechanisms

Sung Jae Won; Hyeongsub So; Leeseung Kang; Soong Ju Oh; Kyou Hyun Kim

doi:10.1016/j.scriptamat.2021.114216

Development of a high-strength Al-Zn-Mg-Cu-based alloy via multi-strengthening mechanisms

Sung Jae Won, Hyeongsub So, Leeseung Kang, Soong Ju Oh, Kyou Hyun Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We develop high-strength of Al-Zn-Mg-Cu-based alloys (7xxx series) by optimizing the amount of Mg/Cu with a trace addition of Sc. The highest mechanical properties are achieved with σ_UTS=672 MPa (σ_y=644 MPa) and ε=8.6%. Based on quantitative symmetry measurements, the improved mechanical strength originates from nanoscopic structural distortion caused by the excessive solutes of Mg and Cu as the amount of Mg/Cu increases. In addition, Sc microalloying induces grain refinement, thus enhancing the mechanical properties.

Original language	English
Article number	114216
Journal	Scripta Materialia
Volume	205
DOIs	https://doi.org/10.1016/j.scriptamat.2021.114216
Publication status	Published - 2021 Dec

Keywords

7xxx Series aluminum alloy
Mechanical properties
Microalloying
Symmetry quantification

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2021.114216

Cite this

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title = "Development of a high-strength Al-Zn-Mg-Cu-based alloy via multi-strengthening mechanisms",

abstract = "We develop high-strength of Al-Zn-Mg-Cu-based alloys (7xxx series) by optimizing the amount of Mg/Cu with a trace addition of Sc. The highest mechanical properties are achieved with σUTS=672 MPa (σy=644 MPa) and ε=8.6%. Based on quantitative symmetry measurements, the improved mechanical strength originates from nanoscopic structural distortion caused by the excessive solutes of Mg and Cu as the amount of Mg/Cu increases. In addition, Sc microalloying induces grain refinement, thus enhancing the mechanical properties.",

keywords = "7xxx Series aluminum alloy, Mechanical properties, Microalloying, Symmetry quantification",

author = "Won, {Sung Jae} and Hyeongsub So and Leeseung Kang and Oh, {Soong Ju} and Kim, {Kyou Hyun}",

note = "Funding Information: This research was financially supported by the Institute of Civil-Military Technology Cooperation, funded by the Defense Acquisition Program Administration and the Ministry of Trade, Industry and Energy of the Korean government, under Grant No. UM18206RD2. This study was also partially supported by the R&D program and research facilities of the Korea Institute of Industrial Technology. Publisher Copyright: {\textcopyright} 2021",

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AU - Won, Sung Jae

AU - So, Hyeongsub

AU - Kang, Leeseung

AU - Oh, Soong Ju

AU - Kim, Kyou Hyun

N1 - Funding Information: This research was financially supported by the Institute of Civil-Military Technology Cooperation, funded by the Defense Acquisition Program Administration and the Ministry of Trade, Industry and Energy of the Korean government, under Grant No. UM18206RD2. This study was also partially supported by the R&D program and research facilities of the Korea Institute of Industrial Technology. Publisher Copyright: © 2021

PY - 2021/12

Y1 - 2021/12

N2 - We develop high-strength of Al-Zn-Mg-Cu-based alloys (7xxx series) by optimizing the amount of Mg/Cu with a trace addition of Sc. The highest mechanical properties are achieved with σUTS=672 MPa (σy=644 MPa) and ε=8.6%. Based on quantitative symmetry measurements, the improved mechanical strength originates from nanoscopic structural distortion caused by the excessive solutes of Mg and Cu as the amount of Mg/Cu increases. In addition, Sc microalloying induces grain refinement, thus enhancing the mechanical properties.

AB - We develop high-strength of Al-Zn-Mg-Cu-based alloys (7xxx series) by optimizing the amount of Mg/Cu with a trace addition of Sc. The highest mechanical properties are achieved with σUTS=672 MPa (σy=644 MPa) and ε=8.6%. Based on quantitative symmetry measurements, the improved mechanical strength originates from nanoscopic structural distortion caused by the excessive solutes of Mg and Cu as the amount of Mg/Cu increases. In addition, Sc microalloying induces grain refinement, thus enhancing the mechanical properties.

KW - 7xxx Series aluminum alloy

KW - Mechanical properties

KW - Microalloying

KW - Symmetry quantification

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DO - 10.1016/j.scriptamat.2021.114216

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JF - Scripta Materialia

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ER -

Development of a high-strength Al-Zn-Mg-Cu-based alloy via multi-strengthening mechanisms

Abstract

Keywords

ASJC Scopus subject areas

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