• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2025, Vol. 61 ›› Issue (24): 118-128.doi: 10.3901/JME.2025.24.118

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Microstructure and Properties of 5356 Aluminum Alloy by Additive and Subtractive Hybrid Manufacturing

SONG Shida1, QIAN Meixia1, GUO Yiming2, ZHANG Xiaoyong1, WANG Kehong1   

  1. 1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094;
    2. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094
  • Received:2025-01-11 Revised:2025-08-02 Published:2026-01-26

Abstract: In recent years, in the face of the urgent need to improve the surface accuracy of complex components in additive manufacturing, a hybrid manufacturing technology combining additive manufacturing and subtractive manufacturing in the same equipment is proposed. In this paper, the thin-walled sample of 5356 aluminum alloy is prepared by the hybrid manufacturing method of wire arc additive manufacturing and subtractive manufacturing. The microstructure and static and dynamic mechanical properties are tested and analyzed, and compared with the wire arc additive manufacturing method. The results show that the microstructures of the two are α phase (Al) matrix and β phase (Al3Mg2) precipitated at the grain boundary, which are composed of fine columnar grains and equiaxed grains. The grain sizes are 71.81 μm and 62.05 μm, respectively. The quasi-static mechanical properties of the two are equivalent, and the direction perpendicular to the deposition direction (horizontal) is better than the direction parallel to the deposition direction (vertical). With the increase of strain rate, the yield stress and flow stress increase continuously, showing obvious strain rate strengthening effect, and the horizontal direction also exhibits better dynamic mechanical properties than the vertical. When the strain rate is 3 800 s-1, the yield stress and flow stress in the horizontal direction under the additive subtractive hybrid manufacturing method are 185 MPa and 615 MPa, respectively, which are 1.5 times and 2.3 times under quasi-static strain. Finally, a complex tube structure made of 5356 aluminum alloy is successfully prepared by the additive subtractive hybrid manufacturing method, maintaining a surface roughness at the sub-micron level. The feasibility of the method in manufacturing complex components made of 5356 aluminum alloy, and relevant experimental data are accumulated, providing valuable experience and guidance for the future fabrication of other complex components.

Key words: additive and subtractive hybrid manufacturing, 5356 aluminum alloy, microstructures and properties, tube structure

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