Reduction of spatter generation using atmospheric gas in laser powder bed fusion of Ti-6Al-4V

Amano, Hiroki; Yamaguchi, Yusuke; Ishimoto, Takuya et al.

Materials Transactions, 2021, 62(8), 1225-1230

Number of Access:396（2025-07-18 09:48 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89890

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Title
Reduction of spatter generation using atmospheric gas in laser powder bed fusion of Ti-6Al-4V
Creator
CreatorName
Amano, Hiroki
CreatorName
Yamaguchi, Yusuke
NRID
1000050508835 1000050508835
ORCID
0000-0003-0081-0591 0000-0003-0081-0591
researchmap permalink
i_taku i_taku
Scopus Author ID
35310484700 35310484700
CreatorName
Ishimoto, Takuya
NRID
1000030243182 1000030243182
ORCID
0000-0001-8052-1698 0000-0001-8052-1698
researchmap permalink
read0013987 read0013987
Scopus Author ID
7403896013 7403896013
CreatorName
Nakano, Takayoshi
Subject
Atmosphere
Biomaterials
Gas
Laser powder bed fusion
Spatter
Titanium alloy
Description
Amano H., Yamaguchi Y., Ishimoto T., et al. Reduction of spatter generation using atmospheric gas in laser powder bed fusion of Ti-6Al-4V. Materials Transactions 62, 1225 (2021); https://doi.org/10.2320/matertrans.MT-M2021059.
Abstract
Laser powder bed fusion (LPBF), a typical additive manufacturing (AM) process, is a promising approach that enables high-accuracy manufacturing of arbitrary structures; therefore, it has been utilized in the aerospace and medical fields. However, several unexplained phenomena significantly affect the quality of fabricated components. In particular, it has been reported that the generation of spatters adversely affects the stability of fabrication process and degrades the performance of the fabricated components. To realize high-quality components, it is essential to suppress the generation of spatters. Thus far, the suppression of spatter generation has been attempted based on the process parameters; however, this has not been adequately discussed in terms of the fabrication atmosphere. Therefore, in this study, we focused on the fabrication atmosphere and investigated spatter generation using gas with different physical properties rather than conventionally used argon. It was observed that the spatter generation during the fabrication of the Ti6Al4V alloy could be significantly suppressed by changing the atmospheric gas, even under constant LPBF process parameters. We proved that the fabrication atmosphere is an important factor to be considered, apart from the process parameters, in AM technology.
Publisher
The Japan Institute of Metals and Materials
Source Title
Materials Transactions
Volume (Issue)
62(8)
Page
1225-1230
Date of Issued
2021-08-01
Language
English
Handle URL
https://hdl.handle.net/11094/89890
PISSN
13459678
eISSN
13475320
NCID
AA1151294X
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.2320/matertrans.MT-M2021059
Access Rights
open access
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article