Quantifying the effects of Sn on θ′-Al2Cu precipitation kinetics in Al–Cu alloys

Mingshan Zhang; Junsheng Wang; Bing Wang; Chengpeng Xue; Feng Qian; Xiaoguang Liu; Shaokang Guan

doi:10.1080/02670836.2021.1972268

Quantifying the effects of Sn on θ′-Al₂Cu precipitation kinetics in Al–Cu alloys

Mingshan Zhang, Junsheng Wang^*, Bing Wang, Chengpeng Xue, Feng Qian, Xiaoguang Liu, Shaokang Guan

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

In this study, the effects of 0.14 wt-% Sn on accelerating the precipitation kinetics during heat treatment are quantified. By calculating the activation energy of θ′ phase, it was found that the combined additions of Cu and Sn can reduce the energy barrier and increase the number density of the θ′ phase in the peak aged state, and thus improving yield strength and ultimate tensile strength from 239 and 318 to 445 and 457 MPa, respectively. Based on the quantitative analysis of the θ′ phase, it was found that with the combined additions of Cu and Sn, the average length of the θ′ phase increased from 18.11 to 25.82 nm, and the number density increased from 2.17 × 10²¹ to 4.62 × 10²¹ m⁻³.

Original language	English
Pages (from-to)	979-992
Number of pages	14
Journal	Materials Science and Technology
Volume	37
Issue number	11
DOIs	https://doi.org/10.1080/02670836.2021.1972268
Publication status	Published - 2021

Keywords

Al–Cu cast alloys
mechanical property
microstructure
precipitation kinetics
trace element

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10.1080/02670836.2021.1972268

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title = "Quantifying the effects of Sn on θ′-Al2Cu precipitation kinetics in Al–Cu alloys",

abstract = "In this study, the effects of 0.14 wt-% Sn on accelerating the precipitation kinetics during heat treatment are quantified. By calculating the activation energy of θ′ phase, it was found that the combined additions of Cu and Sn can reduce the energy barrier and increase the number density of the θ′ phase in the peak aged state, and thus improving yield strength and ultimate tensile strength from 239 and 318 to 445 and 457 MPa, respectively. Based on the quantitative analysis of the θ′ phase, it was found that with the combined additions of Cu and Sn, the average length of the θ′ phase increased from 18.11 to 25.82 nm, and the number density increased from 2.17 × 1021 to 4.62 × 1021 m−3.",

keywords = "Al–Cu cast alloys, mechanical property, microstructure, precipitation kinetics, trace element",

author = "Mingshan Zhang and Junsheng Wang and Bing Wang and Chengpeng Xue and Feng Qian and Xiaoguang Liu and Shaokang Guan",

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T1 - Quantifying the effects of Sn on θ′-Al2Cu precipitation kinetics in Al–Cu alloys

AU - Zhang, Mingshan

AU - Wang, Junsheng

AU - Wang, Bing

AU - Xue, Chengpeng

AU - Qian, Feng

AU - Liu, Xiaoguang

AU - Guan, Shaokang

PY - 2021

Y1 - 2021

N2 - In this study, the effects of 0.14 wt-% Sn on accelerating the precipitation kinetics during heat treatment are quantified. By calculating the activation energy of θ′ phase, it was found that the combined additions of Cu and Sn can reduce the energy barrier and increase the number density of the θ′ phase in the peak aged state, and thus improving yield strength and ultimate tensile strength from 239 and 318 to 445 and 457 MPa, respectively. Based on the quantitative analysis of the θ′ phase, it was found that with the combined additions of Cu and Sn, the average length of the θ′ phase increased from 18.11 to 25.82 nm, and the number density increased from 2.17 × 1021 to 4.62 × 1021 m−3.

AB - In this study, the effects of 0.14 wt-% Sn on accelerating the precipitation kinetics during heat treatment are quantified. By calculating the activation energy of θ′ phase, it was found that the combined additions of Cu and Sn can reduce the energy barrier and increase the number density of the θ′ phase in the peak aged state, and thus improving yield strength and ultimate tensile strength from 239 and 318 to 445 and 457 MPa, respectively. Based on the quantitative analysis of the θ′ phase, it was found that with the combined additions of Cu and Sn, the average length of the θ′ phase increased from 18.11 to 25.82 nm, and the number density increased from 2.17 × 1021 to 4.62 × 1021 m−3.

KW - Al–Cu cast alloys

KW - mechanical property

KW - microstructure

KW - precipitation kinetics

KW - trace element

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DO - 10.1080/02670836.2021.1972268

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EP - 992

JO - Materials Science and Technology

JF - Materials Science and Technology

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ER -

Quantifying the effects of Sn on θ′-Al₂Cu precipitation kinetics in Al–Cu alloys

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