Microstructural evolution and precipitation behavior of multicomponent Al83Mg5Si5Cu5Li2 alloy

被引：1

作者：

Seo, Namhyuk ^{[1
,2
]}

Lee, Junho ^{[1
]}

Park, Seonghyun ^{[1
]}

Lee, Sang-Hwa ^{[1
]}

Kim, Min-Su ^{[2
]}

Lee, Seok-Jae ^{[1
,3
]}

Jung, Jae-Gil ^{[1
,3
]}

机构：

[1] Jeonbuk Natl Univ, Dept Met Engn, Jeonju 51508, South Korea

[2] Korea Inst Ind Technol, Jeonbuk Reg Div, Gimje 54325, South Korea

[3] Jeonbuk Natl Univ, Res Ctr Adv Mat Dev, Jeonju 54896, South Korea

来源：

MATERIALS LETTERS | 2024年 / 375卷

关键词：

Aluminum alloys; Age hardening; Clustering; Atom-probe tomography; MECHANICAL-PROPERTIES; LOW-DENSITY; ALUMINUM; MG;

D O I：

10.1016/j.matlet.2024.137205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigated the microstructural evolution and precipitation behavior of a new multicomponent Al83Mg5- 83 Mg 5- Si5Cu5Li2 5 Cu 5 Li 2 alloy using transmission electron microscopy and atom-probe tomography. As-cast alloy consists of theta-Al2Cu, 2 Cu, Mg2Si, 2 Si, Q-Al5Cu2Mg8Si6, 5 Cu 2 Mg 8 Si 6 , and AlLiSi phases. Solution treatment causes the formation of the QAl5Cu2Mg8Si6 5 Cu 2 Mg 8 Si 6 phase, and slow furnace cooling causes the formation of theta-Al2Cu 2 Cu 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.

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页数：4

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