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<p>Additive and subtractive hybrid manufacturing achieved broad recognition as an emerging technology, facilitating the processing of intricate components with enhanced geometric precision and dimensional accuracy. A direct laser deposition/abrasive belt grinding hybrid manufacturing process (DGHM) was utilized to produce thin-walled Inconel718 (In718) alloy parts in this study. The forming quality analysis, microstructure characterization, and mechanical property testing of the In718 parts were carried out. The performance indexes of In718 alloy prepared by DGHM improved in density and side roughness. The overall content of precipitated phases in the In718 alloy was limited, with the Laves phase primarily existing in the form of fine particles. The thin-walled parts manufactured by DGHM achieved tensile yield strength of 775.49&#xa0;MPa and an average residual compressive stress of 540&#xa0;MPa. The mechanical properties of DGHM specimens surpassed those of DLD specimens. In addition, a curved hollow thin-walled part (simplified hollow turbine blade) was prepared through the optimized DGHM process, which verified the feasibility of the hybrid manufacturing system.</p>

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Additive-subtractive hybrid manufacturing of Inconel 718 alloy by direct laser deposition/abrasive belt grinding: forming quality, microstructure and tensile properties

  • 期刊论文

  • 发表日期：

    2025年4月12日

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  • Tao Wang,
  • Chao Wang,
  • Xufeng Yan,
  • Juanjuan Li,
  • Wenxi Wang,
  • Jun Luo

摘要

Additive and subtractive hybrid manufacturing achieved broad recognition as an emerging technology, facilitating the processing of intricate components with enhanced geometric precision and dimensional accuracy. A direct laser deposition/abrasive belt grinding hybrid manufacturing process (DGHM) was utilized to produce thin-walled Inconel718 (In718) alloy parts in this study. The forming quality analysis, microstructure characterization, and mechanical property testing of the In718 parts were carried out. The performance indexes of In718 alloy prepared by DGHM improved in density and side roughness. The overall content of precipitated phases in the In718 alloy was limited, with the Laves phase primarily existing in the form of fine particles. The thin-walled parts manufactured by DGHM achieved tensile yield strength of 775.49 MPa and an average residual compressive stress of 540 MPa. The mechanical properties of DGHM specimens surpassed those of DLD specimens. In addition, a curved hollow thin-walled part (simplified hollow turbine blade) was prepared through the optimized DGHM process, which verified the feasibility of the hybrid manufacturing system.