Quantitative study of dimensional stability mechanism and microstructure evolution during precipitation process of 2024Al alloy

Youfang Cao; Longtao Jiang; Deng Gong; Guoqin Chen; Ziyang Xiu; Yangming Cheng; Xiufang Wang; Gaohui Wu

doi:10.1016/j.jmst.2021.04.002

Quantitative study of dimensional stability mechanism and microstructure evolution during precipitation process of 2024Al alloy

Youfang Cao
, Longtao Jiang^*
, Deng Gong
, Guoqin Chen
, Ziyang Xiu
, Yangming Cheng
, Xiufang Wang
, Gaohui Wu

^*Corresponding author for this work

School of Materials Science and Engineering

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

25 Scopus citations

Abstract

In this paper, we were devoted to quantitatively analyzing the dimensional change of 2024Al alloy during the aging process. Types of precipitates have been defined and the corresponding volume fraction has been measured with Transmission Electron Microscopy (TEM) and Three-Dimensional Atom Probe Tomography (3D-APT). Guinier-Preston-Bagaryatsky (GPB) zone (0.86 vol.%) was found after aging for 8 h. GPB zone (0.17 vol.%) and S' phase (1.02 vol.%) was found after aging for 24 h. The reduced dimensional change was attributed to the reduction of matrix lattice parameter. Relative to the initial supersaturated solid solution state, the lattice strain of -2.79 × 10⁻⁵ and -5.16 × 10⁻⁵ was produced after 8 h and 24 h aging respectively. The difference of the lattice parameters between the precipitates and matrix was also considered. A model was established to quantitatively describe the relationship between the precipitation process and dimensional change of 2024Al alloy.

Original language	English
Pages (from-to)	85-94
Number of pages	10
Journal	Journal of Materials Science and Technology
Volume	90
DOIs	https://doi.org/10.1016/j.jmst.2021.04.002
State	Published - 10 Nov 2021

Keywords

Aging
Aluminum alloy
Atom probe tomography (APT)
Dimensional stability
Precipitate

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10.1016/j.jmst.2021.04.002

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@article{00ab72dee4094a4aacc20fe67472b5b1,

title = "Quantitative study of dimensional stability mechanism and microstructure evolution during precipitation process of 2024Al alloy",

abstract = "In this paper, we were devoted to quantitatively analyzing the dimensional change of 2024Al alloy during the aging process. Types of precipitates have been defined and the corresponding volume fraction has been measured with Transmission Electron Microscopy (TEM) and Three-Dimensional Atom Probe Tomography (3D-APT). Guinier-Preston-Bagaryatsky (GPB) zone (0.86 vol.\%) was found after aging for 8 h. GPB zone (0.17 vol.\%) and S' phase (1.02 vol.\%) was found after aging for 24 h. The reduced dimensional change was attributed to the reduction of matrix lattice parameter. Relative to the initial supersaturated solid solution state, the lattice strain of -2.79 × 10−5 and -5.16 × 10−5 was produced after 8 h and 24 h aging respectively. The difference of the lattice parameters between the precipitates and matrix was also considered. A model was established to quantitatively describe the relationship between the precipitation process and dimensional change of 2024Al alloy.",

keywords = "Aging, Aluminum alloy, Atom probe tomography (APT), Dimensional stability, Precipitate",

author = "Youfang Cao and Longtao Jiang and Deng Gong and Guoqin Chen and Ziyang Xiu and Yangming Cheng and Xiufang Wang and Gaohui Wu",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = nov,

day = "10",

doi = "10.1016/j.jmst.2021.04.002",

language = "英语",

volume = "90",

pages = "85--94",

journal = "Journal of Materials Science and Technology",

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publisher = "Chinese Society of Metals",

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T1 - Quantitative study of dimensional stability mechanism and microstructure evolution during precipitation process of 2024Al alloy

AU - Cao, Youfang

AU - Jiang, Longtao

AU - Gong, Deng

AU - Chen, Guoqin

AU - Xiu, Ziyang

AU - Cheng, Yangming

AU - Wang, Xiufang

AU - Wu, Gaohui

PY - 2021/11/10

Y1 - 2021/11/10

N2 - In this paper, we were devoted to quantitatively analyzing the dimensional change of 2024Al alloy during the aging process. Types of precipitates have been defined and the corresponding volume fraction has been measured with Transmission Electron Microscopy (TEM) and Three-Dimensional Atom Probe Tomography (3D-APT). Guinier-Preston-Bagaryatsky (GPB) zone (0.86 vol.%) was found after aging for 8 h. GPB zone (0.17 vol.%) and S' phase (1.02 vol.%) was found after aging for 24 h. The reduced dimensional change was attributed to the reduction of matrix lattice parameter. Relative to the initial supersaturated solid solution state, the lattice strain of -2.79 × 10−5 and -5.16 × 10−5 was produced after 8 h and 24 h aging respectively. The difference of the lattice parameters between the precipitates and matrix was also considered. A model was established to quantitatively describe the relationship between the precipitation process and dimensional change of 2024Al alloy.

AB - In this paper, we were devoted to quantitatively analyzing the dimensional change of 2024Al alloy during the aging process. Types of precipitates have been defined and the corresponding volume fraction has been measured with Transmission Electron Microscopy (TEM) and Three-Dimensional Atom Probe Tomography (3D-APT). Guinier-Preston-Bagaryatsky (GPB) zone (0.86 vol.%) was found after aging for 8 h. GPB zone (0.17 vol.%) and S' phase (1.02 vol.%) was found after aging for 24 h. The reduced dimensional change was attributed to the reduction of matrix lattice parameter. Relative to the initial supersaturated solid solution state, the lattice strain of -2.79 × 10−5 and -5.16 × 10−5 was produced after 8 h and 24 h aging respectively. The difference of the lattice parameters between the precipitates and matrix was also considered. A model was established to quantitatively describe the relationship between the precipitation process and dimensional change of 2024Al alloy.

KW - Aging

KW - Aluminum alloy

KW - Atom probe tomography (APT)

KW - Dimensional stability

KW - Precipitate

UR - https://www.scopus.com/pages/publications/85105267357

U2 - 10.1016/j.jmst.2021.04.002

DO - 10.1016/j.jmst.2021.04.002

M3 - 文章

AN - SCOPUS:85105267357

SN - 1005-0302

VL - 90

SP - 85

EP - 94

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

Quantitative study of dimensional stability mechanism and microstructure evolution during precipitation process of 2024Al alloy

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Keywords

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