Manufacturing SiCp/Al composites by semi-solid metal direct writing based on mixed powder remelting

Z. Li; X.G. Hu; Z. Xu; Y. Zhou; W.Y. Qu; C Guo; H.X. Lu; I. Mohagheghian; M. J. Whiting; Q. Zhu

doi:10.1016/j.coco.2023.101677

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Manufacturing SiCp/Al composites by semi-solid metal direct writing based on mixed powder remelting

Journal article

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Manufacturing SiCp/Al composites by semi-solid metal direct writing based on mixed powder remelting

Z. Li, X.G. Hu, Z. Xu, Y. Zhou, W.Y. Qu, C Guo, H.X. Lu, I. Mohagheghian, M. J. Whiting and Q. Zhu

Composites Communications, Vol.42, 101677

10/2023

DOI: https://doi.org/10.1016/j.coco.2023.101677

Abstract

Metal direct writing

Metal-matrix composites

Microstructure

Powder processing

Rheological property

Stir casting and powder metallurgy are the mainstream technologies for manufacturing particle-reinforced aluminum matrix composites. However, particle agglomeration and extensive interfacial reaction in stir casting, as well as residual porosity in powder metallurgy, make it challenging to obtain the due performance. In this study, a semi-solid metal direct writing process based on mixed powder remelting was proposed to manufacture SiCp/Al composites. The mixed powder consisting of AlSi10Mg alloy powder, pure Al powder, and SiCp is heated to a temperature slightly exceeding the melting point of the alloy powder and then sheared to produce a paste-like semi-solid aluminum slurry with suspended SiCp. The microstructures of SiCp/Al composites were experimentally investigated and modeled, demonstrating the uniformity of SiCp and the designability of microstructural characteristics (i.e., the volume fraction and shape factor of the solid phases). The SiCp-matrix interface was also characterized to illustrate the reliable interfacial bonding due to the relatively low processing temperature. Compared with the mentioned processes, this novel approach shows superiorities in particle dispersion and interfacial reaction control.

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Title: Manufacturing SiCp/Al composites by semi-solid metal direct writing based on mixed powder remelting
Creators: Z. Li (Author) - University of Surrey, Department of Mechanical Engineering Sciences
X.G. Hu (Corresponding Author) - Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
Z. Xu (Author) - Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
Y. Zhou (Author) - Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
W.Y. Qu (Author) - BYD Auto Industry Company Limited, Shenzhen, 518118, China
C Guo (Author) - Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials, Southern University of Science and Technology, Shenzhen, 518055, China
H.X. Lu (Author) - Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
I. Mohagheghian
M. J. Whiting - Department of Mechanical Engineering Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK
Q. Zhu (Corresponding Author) - Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
Publication Details: Composites Communications, Vol.42, 101677
Publisher: Elsevier
Date published: 10/2023
Date accepted: 17/07/2023
Grant note: This work was financially supported by the National Natural Science Foundation of China (Grant numbers 51805238, 52250710160), Shenzhen Science and Technology Innovation Committee, Shenzhen, China [Grant numbers KQTD20170328154443162, JCYJ20210324104610029, JCYJ20220818100613028], and the authors acknowledge the assistance of SUSTech Core Research Facilities.
Identifiers: 99792466402346
Academic Unit: Department of Mechanical Engineering Sciences
Language: English
Resource Type: Journal article

Manufacturing SiCp/Al composites by semi-solid metal direct writing based on mixed powder remelting

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