Microstructural evolution and precipitation behavior of multicomponent Al83Mg5Si5Cu5Li2 alloy

Namhyuk Seo; Junho Lee; Seonghyun Park; Sang Hwa Lee; Min Su Kim; Seok Jae Lee; Jae Gil Jung

doi:10.1016/j.matlet.2024.137205

Microstructural evolution and precipitation behavior of multicomponent Al₈₃Mg₅Si₅Cu₅Li₂ alloy

Namhyuk Seo
, Junho Lee
, Seonghyun Park
, Sang Hwa Lee^*
, Min Su Kim
, Seok Jae Lee
, Jae Gil Jung

^*Corresponding author for this work

Metallurgical System Engineering

Jeonbuk National University
Korea Institute of Industrial Technology

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

3 Scopus citations

Abstract

We investigated the microstructural evolution and precipitation behavior of a new multicomponent Al₈₃Mg₅Si₅Cu₅Li₂ alloy using transmission electron microscopy and atom-probe tomography. As-cast alloy consists of θ-Al₂Cu, Mg₂Si, Q-Al₅Cu₂Mg₈Si₆, and AlLiSi phases. Solution treatment causes the formation of the Q-Al₅Cu₂Mg₈Si₆ phase, and slow furnace cooling causes the formation of θ-Al₂Cu particles in the Al matrix, which depletes solute atoms. Nanoscale Cu/Si/Mg-rich solute clusters are formed during natural aging, contributing to an excellent age-hardening response.

Original language	English
Article number	137205
Journal	Materials Letters
Volume	375
DOIs	https://doi.org/10.1016/j.matlet.2024.137205
State	Published - 2024.11.15

Keywords

Age hardening
Aluminum alloys
Atom-probe tomography
Clustering

Quacquarelli Symonds(QS) Subject Topics

Engineering - Mechanical
Materials Science
Physics & Astronomy

Access to Document

10.1016/j.matlet.2024.137205

Cite this

@article{1e35bffebce94cf5b69742c707cd5674,

title = "Microstructural evolution and precipitation behavior of multicomponent Al83Mg5Si5Cu5Li2 alloy",

abstract = "We investigated the microstructural evolution and precipitation behavior of a new multicomponent Al83Mg5Si5Cu5Li2 alloy using transmission electron microscopy and atom-probe tomography. As-cast alloy consists of θ-Al2Cu, Mg2Si, Q-Al5Cu2Mg8Si6, and AlLiSi phases. Solution treatment causes the formation of the Q-Al5Cu2Mg8Si6 phase, and slow furnace cooling causes the formation of θ-Al2Cu particles in the Al matrix, which depletes solute atoms. Nanoscale Cu/Si/Mg-rich solute clusters are formed during natural aging, contributing to an excellent age-hardening response.",

keywords = "Age hardening, Aluminum alloys, Atom-probe tomography, Clustering",

author = "Namhyuk Seo and Junho Lee and Seonghyun Park and Lee, \{Sang Hwa\} and Kim, \{Min Su\} and Lee, \{Seok Jae\} and Jung, \{Jae Gil\}",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = nov,

day = "15",

doi = "10.1016/j.matlet.2024.137205",

language = "English",

volume = "375",

journal = "Materials Letters",

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TY - JOUR

T1 - Microstructural evolution and precipitation behavior of multicomponent Al83Mg5Si5Cu5Li2 alloy

AU - Seo, Namhyuk

AU - Lee, Junho

AU - Park, Seonghyun

AU - Lee, Sang Hwa

AU - Kim, Min Su

AU - Lee, Seok Jae

AU - Jung, Jae Gil

PY - 2024/11/15

Y1 - 2024/11/15

N2 - We investigated the microstructural evolution and precipitation behavior of a new multicomponent Al83Mg5Si5Cu5Li2 alloy using transmission electron microscopy and atom-probe tomography. As-cast alloy consists of θ-Al2Cu, Mg2Si, Q-Al5Cu2Mg8Si6, and AlLiSi phases. Solution treatment causes the formation of the Q-Al5Cu2Mg8Si6 phase, and slow furnace cooling causes the formation of θ-Al2Cu particles in the Al matrix, which depletes solute atoms. Nanoscale Cu/Si/Mg-rich solute clusters are formed during natural aging, contributing to an excellent age-hardening response.

AB - We investigated the microstructural evolution and precipitation behavior of a new multicomponent Al83Mg5Si5Cu5Li2 alloy using transmission electron microscopy and atom-probe tomography. As-cast alloy consists of θ-Al2Cu, Mg2Si, Q-Al5Cu2Mg8Si6, and AlLiSi phases. Solution treatment causes the formation of the Q-Al5Cu2Mg8Si6 phase, and slow furnace cooling causes the formation of θ-Al2Cu particles in the Al matrix, which depletes solute atoms. Nanoscale Cu/Si/Mg-rich solute clusters are formed during natural aging, contributing to an excellent age-hardening response.

KW - Age hardening

KW - Aluminum alloys

KW - Atom-probe tomography

KW - Clustering

UR - https://www.scopus.com/pages/publications/85201661929

U2 - 10.1016/j.matlet.2024.137205

DO - 10.1016/j.matlet.2024.137205

M3 - Journal article

AN - SCOPUS:85201661929

SN - 0167-577X

VL - 375

JO - Materials Letters

JF - Materials Letters

M1 - 137205

ER -