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The HHSAMed 5A06 deposition, fabricated via hybrid heat-source solid-state additive manufacturing (HHSAM), exhibits a more homogeneous microstructure with elevated microhardness (89.9 HV0.5), yield strength (238.3/184.0 MPa), ultimate tensile strength (358.1/324.5 MPa) and elongation of 27.5%/15.7%, respectively. The heat-source enhances the material flow behavior and the interlayer bonding strength among the stacking layers, excluding the effects of grain refinement and precipitate strengthening. It demonstrates superior corrosion resistance relative to the AFSD deposition and 5A06 feedstock, attributed to the most stable passive film, a greater concentration of Al6(Fe,Mn) and the lack of Al3Mg2.

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Hybrid Heat-Source Solid-State Additive Manufacturing of 5A06 Deposition with Favorable Mechanical and Electrochemical Performance

  • 会议论文

  • 发表日期：

    2026年

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  • Q. Qiao,
  • X. Chen,
  • W. I. Lam,
  • Y. Lin,
  • H. Wang,
  • H. Qian,
  • Z. Li,
  • D. Guo,
  • D. Zhang,
  • C. T. Kwok,
  • L. M. Tam

摘要

The HHSAMed 5A06 deposition, fabricated via hybrid heat-source solid-state additive manufacturing (HHSAM), exhibits a more homogeneous microstructure with elevated microhardness (89.9 HV0.5), yield strength (238.3/184.0 MPa), ultimate tensile strength (358.1/324.5 MPa) and elongation of 27.5%/15.7%, respectively. The heat-source enhances the material flow behavior and the interlayer bonding strength among the stacking layers, excluding the effects of grain refinement and precipitate strengthening. It demonstrates superior corrosion resistance relative to the AFSD deposition and 5A06 feedstock, attributed to the most stable passive film, a greater concentration of Al6(Fe,Mn) and the lack of Al3Mg2.