Anomalous precipitation of Al3Sc dispersoids on deformation behavior of a novel Al-Cu-Li alloy fabricated by direct energy deposition

Zeyu Sun; Bei He; Rui Chen; Huaming Wang

doi:10.1016/j.matlet.2022.132207

Anomalous precipitation of Al₃Sc dispersoids on deformation behavior of a novel Al-Cu-Li alloy fabricated by direct energy deposition

Zeyu Sun
, Bei He
, Rui Chen
, Huaming Wang

Beihang University

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

7 Scopus citations

Abstract

In this work, precipitation and deformation behavior of a novel Al-Cu-Li-Mg-Ag-Sc alloy fabricated by direct energy deposition (DED) were investigated in detail. Dual-phase strengthening of Al₃Sc and T₁ (Al₂CuLi) phases can be achieved with a single-stage T6 heat treatment compared to normal double-aging. The excellent compressive yield strengths achieved 512, 345 and 227 MPa at 20, 200 and 300 °C, respectively. Al₃Sc and T₁ phases can maintain strong pinning effects on dislocations, suggesting a good work hardening ability during deformation.

Original language	English
Article number	132207
Journal	Materials Letters
Volume	318
DOIs	https://doi.org/10.1016/j.matlet.2022.132207
State	Published - 1 Jul 2022
Externally published	Yes

Keywords

Additive manufacturing
Al-Li alloy
Heat treatment
Nanosize
Particles

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10.1016/j.matlet.2022.132207

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title = "Anomalous precipitation of Al3Sc dispersoids on deformation behavior of a novel Al-Cu-Li alloy fabricated by direct energy deposition",

abstract = "In this work, precipitation and deformation behavior of a novel Al-Cu-Li-Mg-Ag-Sc alloy fabricated by direct energy deposition (DED) were investigated in detail. Dual-phase strengthening of Al3Sc and T1 (Al2CuLi) phases can be achieved with a single-stage T6 heat treatment compared to normal double-aging. The excellent compressive yield strengths achieved 512, 345 and 227 MPa at 20, 200 and 300 °C, respectively. Al3Sc and T1 phases can maintain strong pinning effects on dislocations, suggesting a good work hardening ability during deformation.",

keywords = "Additive manufacturing, Al-Li alloy, Heat treatment, Nanosize, Particles",

author = "Zeyu Sun and Bei He and Rui Chen and Huaming Wang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = jul,

day = "1",

doi = "10.1016/j.matlet.2022.132207",

language = "英语",

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journal = "Materials Letters",

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TY - JOUR

T1 - Anomalous precipitation of Al3Sc dispersoids on deformation behavior of a novel Al-Cu-Li alloy fabricated by direct energy deposition

AU - Sun, Zeyu

AU - He, Bei

AU - Chen, Rui

AU - Wang, Huaming

PY - 2022/7/1

Y1 - 2022/7/1

N2 - In this work, precipitation and deformation behavior of a novel Al-Cu-Li-Mg-Ag-Sc alloy fabricated by direct energy deposition (DED) were investigated in detail. Dual-phase strengthening of Al3Sc and T1 (Al2CuLi) phases can be achieved with a single-stage T6 heat treatment compared to normal double-aging. The excellent compressive yield strengths achieved 512, 345 and 227 MPa at 20, 200 and 300 °C, respectively. Al3Sc and T1 phases can maintain strong pinning effects on dislocations, suggesting a good work hardening ability during deformation.

AB - In this work, precipitation and deformation behavior of a novel Al-Cu-Li-Mg-Ag-Sc alloy fabricated by direct energy deposition (DED) were investigated in detail. Dual-phase strengthening of Al3Sc and T1 (Al2CuLi) phases can be achieved with a single-stage T6 heat treatment compared to normal double-aging. The excellent compressive yield strengths achieved 512, 345 and 227 MPa at 20, 200 and 300 °C, respectively. Al3Sc and T1 phases can maintain strong pinning effects on dislocations, suggesting a good work hardening ability during deformation.

KW - Additive manufacturing

KW - Al-Li alloy

KW - Heat treatment

KW - Nanosize

KW - Particles

UR - https://www.scopus.com/pages/publications/85127523585

U2 - 10.1016/j.matlet.2022.132207

DO - 10.1016/j.matlet.2022.132207

M3 - 文章

AN - SCOPUS:85127523585

SN - 0167-577X

VL - 318

JO - Materials Letters

JF - Materials Letters

M1 - 132207

ER -

Anomalous precipitation of Al₃Sc dispersoids on deformation behavior of a novel Al-Cu-Li alloy fabricated by direct energy deposition

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