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With the upgrading of modern manufacturing, heavy equipment is developing rapidly in the direction of large-scale, high-performance and integration, which puts forward higher requirements for manufacturing technology. Large components such as hardware stamping dies, space shuttle turbine blades and hydraulic support columns for coal machines are subject to environmental corrosion damage on their surfaces, leading to scrap failure of the entire component [1–3]. According to ISO/ASTM 52900:2021, additive manufacturing is the process of joining materials to make parts from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing and formative manufacturing methodologies. And directed energy deposition, as an additive manufacturing process in which focused thermal energy, is used to fuse materials by melting as they are being deposited. In this study, the manufacturing process can be defined as DED-LB/M/AISI 316L. The process category is directed energy deposition (DED), a laser beam is used for consolidation (-LB), and it is a metallic material (/M), more specifically AISI 316L (/AISI 316L). Due to the advantages of “reduced machining procedures, shorter cycle times and rapid manufacturing”, DED technology has been widely used in petroleum, aerospace, automotive and marine applications [4, 5].

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Effect of the Melt Pool In-Situ Control on the Mechanical Properties of Laser Directed Deposition 316L Stainless Steel Thin-Walled Parts

  • 章节

  • 发表日期：

    2026年

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  • Kaiyu Luo,
  • Youyu Su,
  • Jinzhong Lu

摘要

With the upgrading of modern manufacturing, heavy equipment is developing rapidly in the direction of large-scale, high-performance and integration, which puts forward higher requirements for manufacturing technology. Large components such as hardware stamping dies, space shuttle turbine blades and hydraulic support columns for coal machines are subject to environmental corrosion damage on their surfaces, leading to scrap failure of the entire component [1–3]. According to ISO/ASTM 52900:2021, additive manufacturing is the process of joining materials to make parts from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing and formative manufacturing methodologies. And directed energy deposition, as an additive manufacturing process in which focused thermal energy, is used to fuse materials by melting as they are being deposited. In this study, the manufacturing process can be defined as DED-LB/M/AISI 316L. The process category is directed energy deposition (DED), a laser beam is used for consolidation (-LB), and it is a metallic material (/M), more specifically AISI 316L (/AISI 316L). Due to the advantages of “reduced machining procedures, shorter cycle times and rapid manufacturing”, DED technology has been widely used in petroleum, aerospace, automotive and marine applications [4, 5].