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<p>This study presents a lateral static pressure enhancement (LSPE) process aimed at improving the load-bearing performance of aluminum alloy wire arc additively manufactured (WAAM) plates. The LSPE process actively regulates the residual stress field and enhances performance by applying static pressure in the thickness direction of the deposited plate. The effects of various pressing depths (0.01&#xa0;mm, 0.03&#xa0;mm, 0.05&#xa0;mm, and 0.07&#xa0;mm) and pressure application ranges (full-range, 1/2 height, 1/4 height) on residual stress distribution and load-bearing performance were systematically investigated. Using the established LSPE process and a finite element model for subsequent buckling behavior, the effects of stress field reconstruction under different process parameter combinations were thoroughly analyzed. The study also elucidates the mechanism by which residual stresses influence plate buckling stability. The feasibility of the LSPE process was validated through experimental tests, and the deformation characteristics and load-bearing performance of the plates under static pressure loads before and after treatment were compared and analyzed. Additionally, the impact of the post-treatment process on the microstructure was examined to further uncover its enhancement mechanism.</p>

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Static Pressure Enhancement Mechanism of Aluminum Alloy Arc Additively Manufactured Components and Influence on Load-Bearing Performance

  • 期刊论文

  • 发表日期：

    2025年10月24日

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  • Xinlong Zhang,
  • Zhaosong Jiang,
  • Xiaodong Xie,
  • Chunmei Yang

摘要

This study presents a lateral static pressure enhancement (LSPE) process aimed at improving the load-bearing performance of aluminum alloy wire arc additively manufactured (WAAM) plates. The LSPE process actively regulates the residual stress field and enhances performance by applying static pressure in the thickness direction of the deposited plate. The effects of various pressing depths (0.01 mm, 0.03 mm, 0.05 mm, and 0.07 mm) and pressure application ranges (full-range, 1/2 height, 1/4 height) on residual stress distribution and load-bearing performance were systematically investigated. Using the established LSPE process and a finite element model for subsequent buckling behavior, the effects of stress field reconstruction under different process parameter combinations were thoroughly analyzed. The study also elucidates the mechanism by which residual stresses influence plate buckling stability. The feasibility of the LSPE process was validated through experimental tests, and the deformation characteristics and load-bearing performance of the plates under static pressure loads before and after treatment were compared and analyzed. Additionally, the impact of the post-treatment process on the microstructure was examined to further uncover its enhancement mechanism.