Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys

Hou, Huiying; Zhang, Lei; Xing, Shuohao; Zhai, Hongchao; Xia, Shule; Zhai, Long; Wang, Zhijie; Liu, Sha

doi:10.3390/met15040365

Open AccessArticle

Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys

by

Huiying Hou

^1,2,

Lei Zhang

^1,2,

Shuohao Xing

^1,2,

Hongchao Zhai

^1,2,

Shule Xia

^3,4,

Long Zhai

^3,4,

Zhijie Wang

^5,* and

Sha Liu

^1,2,*

¹

State Key Lab of Metastable Materials Science & Technology, College of Materials Science & Engineering, Yanshan University, Qinhuangdao 066004, China

²

Hebei Key Lab for Optimizing Metal Product Technology and Performance, College of Materials Science & Engineering, Yanshan University, Qinhuangdao 066004, China

³

CITIC Dicastal Co., Ltd., Qinhuangdao 066004, China

⁴

Qinhuangdao Xinneng Energy Equipment Co., Ltd., Qinhuangdao 066004, China

⁵

School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China

^*

Authors to whom correspondence should be addressed.

Metals 2025, 15(4), 365; https://doi.org/10.3390/met15040365

Submission received: 26 February 2025 / Revised: 21 March 2025 / Accepted: 25 March 2025 / Published: 26 March 2025

(This article belongs to the Special Issue Special and Short Processes of Aluminum Alloys)

Download

Browse Figures

Versions Notes

Abstract

This study investigates the effect of pre-deformation on the microstructure and precipitation behavior of spray-formed 7xxx series aluminum alloys. Pre-deformation introduces a high density of dislocations, increasing the proportion of low-angle grain boundaries from 40% to 66%. After solution treatment at 580 °C, grain size significantly increases, ranging from 35 µm to 315 µm, with a higher proportion of larger grains observed in pre-deformed samples. Subsequent aging treatment refines the microstructure, resulting in grain sizes between 30 µm and 270 µm, and leads to a more uniform precipitate distribution.

Keywords: 7xxx series aluminum alloy; pre-deformation; dislocation induced heterogeneous nucleation; precipitate strengthening

Share and Cite

MDPI and ACS Style

Hou, H.; Zhang, L.; Xing, S.; Zhai, H.; Xia, S.; Zhai, L.; Wang, Z.; Liu, S. Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys. Metals 2025, 15, 365. https://doi.org/10.3390/met15040365

AMA Style

Hou H, Zhang L, Xing S, Zhai H, Xia S, Zhai L, Wang Z, Liu S. Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys. Metals. 2025; 15(4):365. https://doi.org/10.3390/met15040365

Chicago/Turabian Style

Hou, Huiying, Lei Zhang, Shuohao Xing, Hongchao Zhai, Shule Xia, Long Zhai, Zhijie Wang, and Sha Liu. 2025. "Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys" Metals 15, no. 4: 365. https://doi.org/10.3390/met15040365

APA Style

Hou, H., Zhang, L., Xing, S., Zhai, H., Xia, S., Zhai, L., Wang, Z., & Liu, S. (2025). Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys. Metals, 15(4), 365. https://doi.org/10.3390/met15040365

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Effect of Pre-Deformation on the Microstructure and Precipitation Behavior of Spray-Formed 7xxx Series Aluminum Alloys

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI