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Typical aero-engine thin-walled components have complex shapes, and the components are mainly composed of complex curved surfaces. The quality issues of forming thin-walled curved components have attracted widespread attention. Due to the special deposition structure and complex curvatures, as the number of deposition layers increases, the thermal accumulation effect intensifies, and laser deposition thin-walled curved components face serious thermal accumulation problems. Therefore, in Chap. 8 , based on Chap. 7 , the thermal accumulation effect model of laser directional energy deposition thin-walled curved components was derived, as well as the thermal suppression effect model of thin-walled curved components after introducing in-situ control of the molten pool. In addition, the mechanism of significant enhancement in component toughness due to twin-induced plastic deformation was analyzed, and the promoting effect of thermal regulation on the improvement of component strength and toughness was analyzed.

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Thermal Effect Model and Tensile Performance Analysis of Laser Directed Energy Deposition 316L Curved Thin-Walled Parts

  • 章节

  • 发表日期：

    2026年

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  • Kaiyu Luo,
  • Youyu Su,
  • Jinzhong Lu

摘要

Typical aero-engine thin-walled components have complex shapes, and the components are mainly composed of complex curved surfaces. The quality issues of forming thin-walled curved components have attracted widespread attention. Due to the special deposition structure and complex curvatures, as the number of deposition layers increases, the thermal accumulation effect intensifies, and laser deposition thin-walled curved components face serious thermal accumulation problems. Therefore, in Chap. 8 , based on Chap. 7 , the thermal accumulation effect model of laser directional energy deposition thin-walled curved components was derived, as well as the thermal suppression effect model of thin-walled curved components after introducing in-situ control of the molten pool. In addition, the mechanism of significant enhancement in component toughness due to twin-induced plastic deformation was analyzed, and the promoting effect of thermal regulation on the improvement of component strength and toughness was analyzed.