Relationship between solidification time and porosity with directed energy deposition of Inconel 718

Tatsuhiko Kuriya, Ryo Koike, Takanori Mori, Yasuhiro Kakinuma

Research output: Contribution to journalArticle


Directed Energy Deposition (DED) of metal materials has been widely studied with Inconel 718 using in aerospace industry. Void generation in a deposited part causes deterioration of the mechanical strength. Hence, void should be avoided in the DED process. In this study, a mechanism of void generation was investigated through the dynamic observation by high-speed camera, the thermal observation and the evaluation of the porosity. The experimental result shows that solidification time has an influence on the void generation.

Original languageEnglish
JournalJournal of Advanced Mechanical Design, Systems and Manufacturing
Issue number5
Publication statusPublished - 2018 Jan 1



  • 3D printing
  • Additive manufacturing
  • CNC machine tool
  • Directed energy deposition
  • High-speed camera
  • Inconel 718
  • Porosity
  • Solidification time
  • Two-color temperature measurement

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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