Microstructure and Mechanical Properties of Al-5Cu-4.5Mg-2.5Zn Squeeze Cast Alloy

Yonggen Sun; Yanchun Wang; Yanni Su; Xujie Song; Lanjun Du; Yuansheng Cheng; Zhiming Du

doi:10.1007/s11595-022-2620-1

Microstructure and Mechanical Properties of Al-5Cu-4.5Mg-2.5Zn Squeeze Cast Alloy

Yonggen Sun
, Yanchun Wang
, Yanni Su
, Xujie Song
, Lanjun Du
, Yuansheng Cheng
, Zhiming Du^*

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology
Beijing North Vehicle Group Corporation
Beijing Aerospace Propulsion Institute

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

2 Scopus citations

Abstract

Al-5Cu-4.5Mg-2.5Zn alloy was prepared and the alloy ingots were fabricated by squeeze casting in this work. Considering these negative effects of composition segregation and coarse second phases, some heat treatments were adopted in this research. Microstructures, element distribution, phase constitutions and mechanical properties of Al-5Cu-4.5Mg-2.5Zn alloy ingots before and after heat treatments were investigated. It was discovered that these heat treatments would influence and extremely optimize the microstructures and properties of Al-5Cu-4.5Mg-2.5Zn alloy. Except some residual S (Al₂CuMg) phase and a few of η phase, the precipitate free zone (PFZ) and the Guinier Preston zone (GPZ) formed in the alloy. It was also found that θ″ (Al₂Cu) and η″ (MgZn₂) phases formed and kept a consistent relationship with the aluminum matrix. As the result, these properties of ultimate tensile strength (UTS), percentage of elongation and Brinell hardness (HB) were greatly elevated. The UTS, percent of elongation and HB were 469 MPa, 8.1% and 208 N/mm², respectively.

Original language	English
Pages (from-to)	977-985
Number of pages	9
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	37
Issue number	5
DOIs	https://doi.org/10.1007/s11595-022-2620-1
State	Published - Oct 2022

Keywords

Al-Cu-Mg-Zn alloy
mechanical properties
second phases
squeeze casting, heat treatments

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10.1007/s11595-022-2620-1

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title = "Microstructure and Mechanical Properties of Al-5Cu-4.5Mg-2.5Zn Squeeze Cast Alloy",

abstract = "Al-5Cu-4.5Mg-2.5Zn alloy was prepared and the alloy ingots were fabricated by squeeze casting in this work. Considering these negative effects of composition segregation and coarse second phases, some heat treatments were adopted in this research. Microstructures, element distribution, phase constitutions and mechanical properties of Al-5Cu-4.5Mg-2.5Zn alloy ingots before and after heat treatments were investigated. It was discovered that these heat treatments would influence and extremely optimize the microstructures and properties of Al-5Cu-4.5Mg-2.5Zn alloy. Except some residual S (Al2CuMg) phase and a few of η phase, the precipitate free zone (PFZ) and the Guinier Preston zone (GPZ) formed in the alloy. It was also found that θ″ (Al2Cu) and η″ (MgZn2) phases formed and kept a consistent relationship with the aluminum matrix. As the result, these properties of ultimate tensile strength (UTS), percentage of elongation and Brinell hardness (HB) were greatly elevated. The UTS, percent of elongation and HB were 469 MPa, 8.1\% and 208 N/mm2, respectively.",

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author = "Yonggen Sun and Yanchun Wang and Yanni Su and Xujie Song and Lanjun Du and Yuansheng Cheng and Zhiming Du",

note = "Publisher Copyright: {\textcopyright} 2022, Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature.",

year = "2022",

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doi = "10.1007/s11595-022-2620-1",

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T1 - Microstructure and Mechanical Properties of Al-5Cu-4.5Mg-2.5Zn Squeeze Cast Alloy

AU - Sun, Yonggen

AU - Wang, Yanchun

AU - Su, Yanni

AU - Song, Xujie

AU - Du, Lanjun

AU - Cheng, Yuansheng

AU - Du, Zhiming

PY - 2022/10

Y1 - 2022/10

N2 - Al-5Cu-4.5Mg-2.5Zn alloy was prepared and the alloy ingots were fabricated by squeeze casting in this work. Considering these negative effects of composition segregation and coarse second phases, some heat treatments were adopted in this research. Microstructures, element distribution, phase constitutions and mechanical properties of Al-5Cu-4.5Mg-2.5Zn alloy ingots before and after heat treatments were investigated. It was discovered that these heat treatments would influence and extremely optimize the microstructures and properties of Al-5Cu-4.5Mg-2.5Zn alloy. Except some residual S (Al2CuMg) phase and a few of η phase, the precipitate free zone (PFZ) and the Guinier Preston zone (GPZ) formed in the alloy. It was also found that θ″ (Al2Cu) and η″ (MgZn2) phases formed and kept a consistent relationship with the aluminum matrix. As the result, these properties of ultimate tensile strength (UTS), percentage of elongation and Brinell hardness (HB) were greatly elevated. The UTS, percent of elongation and HB were 469 MPa, 8.1% and 208 N/mm2, respectively.

AB - Al-5Cu-4.5Mg-2.5Zn alloy was prepared and the alloy ingots were fabricated by squeeze casting in this work. Considering these negative effects of composition segregation and coarse second phases, some heat treatments were adopted in this research. Microstructures, element distribution, phase constitutions and mechanical properties of Al-5Cu-4.5Mg-2.5Zn alloy ingots before and after heat treatments were investigated. It was discovered that these heat treatments would influence and extremely optimize the microstructures and properties of Al-5Cu-4.5Mg-2.5Zn alloy. Except some residual S (Al2CuMg) phase and a few of η phase, the precipitate free zone (PFZ) and the Guinier Preston zone (GPZ) formed in the alloy. It was also found that θ″ (Al2Cu) and η″ (MgZn2) phases formed and kept a consistent relationship with the aluminum matrix. As the result, these properties of ultimate tensile strength (UTS), percentage of elongation and Brinell hardness (HB) were greatly elevated. The UTS, percent of elongation and HB were 469 MPa, 8.1% and 208 N/mm2, respectively.

KW - Al-Cu-Mg-Zn alloy

KW - mechanical properties

KW - second phases

KW - squeeze casting, heat treatments

UR - https://www.scopus.com/pages/publications/85139233308

U2 - 10.1007/s11595-022-2620-1

DO - 10.1007/s11595-022-2620-1

M3 - 文章

AN - SCOPUS:85139233308

SN - 1000-2413

VL - 37

SP - 977

EP - 985

JO - Journal Wuhan University of Technology, Materials Science Edition

JF - Journal Wuhan University of Technology, Materials Science Edition

IS - 5

ER -

Microstructure and Mechanical Properties of Al-5Cu-4.5Mg-2.5Zn Squeeze Cast Alloy

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