Fabrication method for stainless steel foam block in directed energy deposition

Ryo Koike; Takashi Matsumoto; Tojiro Aoyama; Masaki Kondo

doi:10.1016/j.cirp.2020.04.060

Fabrication method for stainless steel foam block in directed energy deposition

Ryo Koike, Takashi Matsumoto, Tojiro Aoyama, Masaki Kondo

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

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 language	English
Pages (from-to)	173-176
Number of pages	4
Journal	CIRP Annals
Volume	69
Issue number	1
DOIs	https://doi.org/10.1016/j.cirp.2020.04.060
Publication status	Published - 2020

Keywords

Additive manufacturing
Heat treatment
Laser

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cirp.2020.04.060

Cite this

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title = "Fabrication method for stainless steel foam block in directed energy deposition",

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.",

keywords = "Additive manufacturing, Heat treatment, Laser",

author = "Ryo Koike and Takashi Matsumoto and Tojiro Aoyama and Masaki Kondo",

note = "Funding Information: This work was supported by the Japanese Ministry of Education , Science, Sports and Culture with Grant-in-Aid for Young Scientists (B) Grant Number 17K14574 . Funding Information: This work was supported by the Japanese Ministry of Education, Science, Sports and Culture with Grant-in-Aid for Young Scientists (B) Grant Number 17K14574. Publisher Copyright: {\textcopyright} 2020 CIRP",

year = "2020",

doi = "10.1016/j.cirp.2020.04.060",

language = "English",

volume = "69",

pages = "173--176",

journal = "CIRP Annals",

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TY - JOUR

T1 - Fabrication method for stainless steel foam block in directed energy deposition

AU - Koike, Ryo

AU - Matsumoto, Takashi

AU - Aoyama, Tojiro

AU - Kondo, Masaki

N1 - Funding Information: This work was supported by the Japanese Ministry of Education , Science, Sports and Culture with Grant-in-Aid for Young Scientists (B) Grant Number 17K14574 . Funding Information: This work was supported by the Japanese Ministry of Education, Science, Sports and Culture with Grant-in-Aid for Young Scientists (B) Grant Number 17K14574. Publisher Copyright: © 2020 CIRP

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - Additive manufacturing

KW - Heat treatment

KW - Laser

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DO - 10.1016/j.cirp.2020.04.060

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JO - CIRP Annals

JF - CIRP Annals

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ER -

Fabrication method for stainless steel foam block in directed energy deposition

Abstract

Keywords

ASJC Scopus subject areas

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