Effect of aging treatment on phase evolution and mechanical properties of selective laser melted Al-Mg-Er-Zr alloy

Yanwu Guo; Wei Wu; Wei Shi; Xiaorong Zhou; Hui Huang; Shengping Wen; Xiaolan Wu; Kunyuan Gao; Li Rong; Peng Qi; Zuoren Nie

Effect of aging treatment on phase evolution and mechanical properties of selective laser melted Al-Mg-Er-Zr alloy

Yanwu Guo, Wei Wu, Wei Shi, Xiaorong Zhou, Hui Huang, Shengping Wen, Xiaolan Wu, Kunyuan Gao, Li Rong, Peng Qi, Zuoren Nie

Materials Engineering

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

Abstract

Er and Zr modified Al-Mg alloy was manufactured by selective laser melting. The effect of aging treatment on phase evolution and mechanical properties of alloy has been studied. The results show that bimodal grain structures (2.8±1.1 μm) could be obtained, thanks to the Al3Zr primary phases promoting the formation of equiaxed grains (0.8±0.3 μm) at the boundary of molten pool. During the aging of 375 ℃, Al3(Er,Zr) particles with the size of 2-5 nm were produced via synergistic precipitation of Er and Zr, which would greatly improve the strength and reach 510±9 MPa. At the same time, the Mg-rich phase was dissolved, the Mn-rich phase was precipitated, and dislocations could accelerate the diffusion of solute atoms during the evolution of the phases.

Original language	English
Journal	Materials Letters
Publication status	Accepted/In press - 10 Aug 2022

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AAM-10-08-22
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Embargo ends: 1/01/32

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title = "Effect of aging treatment on phase evolution and mechanical properties of selective laser melted Al-Mg-Er-Zr alloy",

abstract = "Er and Zr modified Al-Mg alloy was manufactured by selective laser melting. The effect of aging treatment on phase evolution and mechanical properties of alloy has been studied. The results show that bimodal grain structures (2.8±1.1 μm) could be obtained, thanks to the Al3Zr primary phases promoting the formation of equiaxed grains (0.8±0.3 μm) at the boundary of molten pool. During the aging of 375 ℃, Al3(Er,Zr) particles with the size of 2-5 nm were produced via synergistic precipitation of Er and Zr, which would greatly improve the strength and reach 510±9 MPa. At the same time, the Mg-rich phase was dissolved, the Mn-rich phase was precipitated, and dislocations could accelerate the diffusion of solute atoms during the evolution of the phases.",

author = "Yanwu Guo and Wei Wu and Wei Shi and Xiaorong Zhou and Hui Huang and Shengping Wen and Xiaolan Wu and Kunyuan Gao and Li Rong and Peng Qi and Zuoren Nie",

year = "2022",

month = aug,

day = "10",

language = "English",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Effect of aging treatment on phase evolution and mechanical properties of selective laser melted Al-Mg-Er-Zr alloy

AU - Guo, Yanwu

AU - Wu, Wei

AU - Shi, Wei

AU - Zhou, Xiaorong

AU - Huang, Hui

AU - Wen, Shengping

AU - Wu, Xiaolan

AU - Gao, Kunyuan

AU - Rong, Li

AU - Qi, Peng

AU - Nie, Zuoren

PY - 2022/8/10

Y1 - 2022/8/10

N2 - Er and Zr modified Al-Mg alloy was manufactured by selective laser melting. The effect of aging treatment on phase evolution and mechanical properties of alloy has been studied. The results show that bimodal grain structures (2.8±1.1 μm) could be obtained, thanks to the Al3Zr primary phases promoting the formation of equiaxed grains (0.8±0.3 μm) at the boundary of molten pool. During the aging of 375 ℃, Al3(Er,Zr) particles with the size of 2-5 nm were produced via synergistic precipitation of Er and Zr, which would greatly improve the strength and reach 510±9 MPa. At the same time, the Mg-rich phase was dissolved, the Mn-rich phase was precipitated, and dislocations could accelerate the diffusion of solute atoms during the evolution of the phases.

AB - Er and Zr modified Al-Mg alloy was manufactured by selective laser melting. The effect of aging treatment on phase evolution and mechanical properties of alloy has been studied. The results show that bimodal grain structures (2.8±1.1 μm) could be obtained, thanks to the Al3Zr primary phases promoting the formation of equiaxed grains (0.8±0.3 μm) at the boundary of molten pool. During the aging of 375 ℃, Al3(Er,Zr) particles with the size of 2-5 nm were produced via synergistic precipitation of Er and Zr, which would greatly improve the strength and reach 510±9 MPa. At the same time, the Mg-rich phase was dissolved, the Mn-rich phase was precipitated, and dislocations could accelerate the diffusion of solute atoms during the evolution of the phases.

M3 - Article

SN - 0167-577X

JO - Materials Letters

JF - Materials Letters

ER -

Effect of aging treatment on phase evolution and mechanical properties of selective laser melted Al-Mg-Er-Zr alloy

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