A basic study on metal foam fabrication with titanium hydride in direct energy deposition

Ryo Koike, Takashi Matsumoto, Yasuhiro Kakinuma, Tojiro Aoyama, Yohei Oda, Tatsuhiko Kuriya, Masaki Kondo

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)


Direct energy deposition (DED) is one of additive manufacturing processes, which achieves high production efficiency by supplying material powder and irradiating high-power laser beam to a baseplate at the same time. Furthermore, the DED has a potential to produce a functional material by blending various material powders. Although a metal foam structure is well-known because of its beneficial functionality such as light-weight, the complicated foaming process requires a special equipment and long processing time. This paper proposes a simple fabrication method for metal foam structure by applying a blowing agent into DED. Metal foam structure can be produced by foaming the meltpool with titanium hydride which releases hydrogen in a high temperature environment. The proposed method certainly produces a foam structure in stainless steel by blending titanium hydride powder into stainless powder for DED.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalProcedia Manufacturing
Publication statusPublished - 2018
Event18th Machining Innovations Conference for Aerospace Industry, MIC 2018 - Garbsen, Germany
Duration: 2018 Dec 282018 Dec 29


  • Additive manufacturing
  • Direct energy deposition
  • Foam metal
  • Lasser
  • Titanium hydride

ASJC Scopus subject areas

  • Artificial Intelligence
  • Industrial and Manufacturing Engineering


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