Combined effect of ball milling and high-pressure torsion on mechanical properties of Al2O3/Al composite

Wenchao Shi; Qiangzhi Duan; Jiajun Wang; Beishun Cui; Feng Xu; Dongmei Gong

doi:10.1515/mt-2025-0050

Artikel

Combined effect of ball milling and high-pressure torsion on mechanical properties of Al₂O₃/Al composite

Wenchao Shi
Wenchao Shi, born in 1988, studied materials processing engineering at Harbin Institute of Technology from 2013 to 2016, where he obtained his doctorate. He works at Institute of Industry and Equipment Technology at Hefei University of Technology from 2017 to 2023. He works as an associate professor at School of Materials Science and Engineering at Hefei University of Technology since 2024.
, Qiangzhi Duan
Qiangzhi Duan, born in 2000, studies material science at Hefei University of Technology since 2023, where he deals with microstructure evolution of composite.
, Jiajun Wang
Jiajun Wang, born in 2002, studies material science at Hefei University of Technology since 2024, where he deals with deformation of composite.
, Beishun Cui , Feng Xu
Feng Xu, born in 1978, studied materials processing engineering at Hefei University of Technology from 2005 to 2011, where he obtained his doctorate. Afterward, he works as a professor at School of Mechanical and Vehicle Engineering at West Anhui University since 2012, where he also works as assistant dean.
und Dongmei Gong
Dongmei Gong, born in 1978, studied mechanical engineering at Hefei University of Technology from 2006 to 2009. Afterward, she works as a professor at School of Mechanical and Vehicle Engineering at West Anhui University.

Veröffentlicht/Copyright: 7. Mai 2025

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Abstract

During vacuum hot pressing sintering process, the Al₂O₃ generated in situ and Al₂O₃/Al composite are obtained. The ball milling and high – pressure torsion is used to improved tensile properties of Al₂O₃/Al composite. The effects of high – pressure torsion on the distribution of Al₂O₃ and mechanical properties of the Al₂O₃/Al composite are discussed. The results show that under high – pressure torsion deformation, Al₂O₃ films coated on the surface of Al powders are broken. The Al – Al interface is formed due to the broken Al₂O₃. Increasing the shear deformation degree is beneficial to the consolidation of Al powders and improves the hardness of the Al₂O₃/Al composite. The improved ultimate tensile strength of the Al₂O₃/Al composite benefits from the closure of voids and the formed Al – Al interface during high – pressure torsion deformation. After high – pressure torsion, the ultimate tensile strength and hardness of the Al₂O₃/Al composite with the ball milled Al powders are 198 MPa and 75.2 HV, respectively.

Keywords: aluminum matrix composites; dimple; distribution; high – pressure torsion; tensile property

Corresponding author: Wenchao Shi, Hefei University of Technology, Hefei 230009, Anhui, China, E-mail: shiwenchaohfut@hfut.edu.cn

Funding source: Project for Excellent Research and Innovation Team of Anhui Province

Award Identifier / Grant number: 2024AH010034

Funding source: Project for Cultivating Academic Leaders of Anhui Province

Award Identifier / Grant number: DTR2023040

Funding source: Anhui Natural Science Foundation

Award Identifier / Grant number: 2308085ME164

About the authors

Wenchao Shi

Wenchao Shi, born in 1988, studied materials processing engineering at Harbin Institute of Technology from 2013 to 2016, where he obtained his doctorate. He works at Institute of Industry and Equipment Technology at Hefei University of Technology from 2017 to 2023. He works as an associate professor at School of Materials Science and Engineering at Hefei University of Technology since 2024.

Qiangzhi Duan

Qiangzhi Duan, born in 2000, studies material science at Hefei University of Technology since 2023, where he deals with microstructure evolution of composite.

Jiajun Wang

Jiajun Wang, born in 2002, studies material science at Hefei University of Technology since 2024, where he deals with deformation of composite.

Feng Xu

Feng Xu, born in 1978, studied materials processing engineering at Hefei University of Technology from 2005 to 2011, where he obtained his doctorate. Afterward, he works as a professor at School of Mechanical and Vehicle Engineering at West Anhui University since 2012, where he also works as assistant dean.

Dongmei Gong

Dongmei Gong, born in 1978, studied mechanical engineering at Hefei University of Technology from 2006 to 2009. Afterward, she works as a professor at School of Mechanical and Vehicle Engineering at West Anhui University.

Research ethics: Not applicable.
Informed consent: Not applicable.
Author contributions: The author has accepted responsibility for the entire content of this manuscript and approved submission.
Use of Large Language Models, AI and Machine Learning Tools: None declared.
Conflict of interest: The authors state no conflict of interest.
Research funding: This work was supported by Anhui Natural Science Foundation (2308085ME164), Project for Cultivating Academic Leaders of Anhui Province (DTR2023040), and Project for Excellent Research and Innovation Team of Anhui Province (2024AH010034).
Data availability: Data will be made available on request.

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Published Online: 2025-05-07

Published in Print: 2025-06-26

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Schlagwörter für diesen Artikel

aluminum matrix composites; dimple; distribution; high – pressure torsion; tensile property