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Article Open Access http://dx.doi.org/10.26855/sa.2025.06.005

Microstructure and Mechanical Properties of TiB2/Al-Zn-Mg-Cu Composite Fabricated by Electron Beam Freeform

Yi Gao1, Xiaodong Li2, Bin Yang1, Yun Zhao2, Xianfeng Li1,*

1School of Materials Science & Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

2Machinery Manufacturing Co., Ltd. of KSEC, Kunming 650217, Yunnan, China.

*Corresponding author: Xianfeng Li

Published: June 27,2025

Abstract

Electron beam freeform fabrication (EBF3) is attracting more and more attention from researchers due to its suitability for space environments. In this paper, we report the microstructure and mechanical properties of a TiB2/Al-Zn-Mg-Cu composite manufactured by EBF3. The main phases were α-Al and TiB2 particles. There were equiaxed grains in the composite, and the average grain size distribu-tion ranged from 17.3μm to 22.2μm. The cross-sectional microhardness exhibits an overall increasing distribution from 66 to 128 HV1 from the substrate to the top of the part. It had 360 MPa ultimate tensile strength, 216 MPa yield strength, and 16% elongation in the horizontal direction.

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How to cite this paper

Microstructure and Mechanical Properties of TiB2/Al-Zn-Mg-Cu Composite Fabricated by Electron Beam Freeform

How to cite this paper: Yi Gao, Xiaodong Li, Bin Yang, Yun Zhao, Xianfeng Li. (2025) Microstructure and Mechanical Properties of TiB2/Al-Zn-Mg-Cu Composite Fabricated by Electron Beam Freeform. Scientific Access1(1), 27-31.

DOI: http://dx.doi.org/10.26855/sa.2025.06.005