Study on Wire Arc Additive Manufacturing of SiC Aluminum Alloy Composite Gradient Space Exploration Structure

doi:10.3901/JME.260136

Abstract

Abstract: The gradient space exploration structure containing SiC 2 wt.% or more has good deformation resistance and is often used to prepare hypersonic vehicle seeker. The fine core wire of aluminum alloy containing SiC with good technological properties was developed, the structure characteristics of aluminum alloy material gradient space probe were analyzed, and the double wire arc additive manufacturing technology was studied. The results show that the developed Al-Si-SiC alloy system has little influence on the stability of main wire arc in the process of double wire arc additive manufacturing, and the deposited metal has high strength and high elastic modulus. The aluminum alloy gradient space detection structure was analyzed, and the aluminum alloy gradient space detection structure with SiC gradient varying from 2 wt.%-4 wt.% was prepared by adopting the zonal forming strategy and the forming precision control method of the axial wire feeding arc additive manufacturing components. The average size deviation of the structural components was ±1.16 mm. Under a 5g acceleration and a 10 min vibration test, there was no significant deformation or cracking observed, demonstrating strong resistance to vibration-induced deformation. The research results provide theoretical basis and basic data for the preparation of high performance ceramic phase modified aerospace complex aluminum alloy components.

Key words: SiC, material gradient structure, double wire arc additive manufacturing, aluminium alloy

CLC Number:

TG47

ZHENG Bo, YU Shengfu, YU Zhenyu, MENG Xiaohao. Study on Wire Arc Additive Manufacturing of SiC Aluminum Alloy Composite Gradient Space Exploration Structure[J]. Journal of Mechanical Engineering, 2026, 62(4): 107-117.

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