Fabrication method for stainless steel foam block in directed energy deposition

Ryo Koike, Takashi Matsumoto, Tojiro Aoyama, Masaki Kondo

Research output: Contribution to journalArticle

Abstract

Using powder-based directed energy deposition (DED), composite materials can easily be produced by mixing powders. In this study, a foam stainless block is fabricated through DED by combining SUS316L and titanium-hydride (TiH2) powders together. Although TiH2 successfully foams the melt pool and leaves many pores inside the deposit, it is difficult to enhance the porosity rate because the porous structure is destroyed when the upper layer is deposited. This study demonstrates a laser power control and deposition trajectory that can be used to create a low-density porous structure and measures the compression strength of the fabricated block.

Original languageEnglish
Pages (from-to)173-176
Number of pages4
JournalCIRP Annals
Volume69
Issue number1
DOIs
Publication statusPublished - 2020

Keywords

  • Additive manufacturing
  • Heat treatment
  • Laser

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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