Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion

Tsutsumi, Yusuke; Ishimoto, Takuya; Oishi, Tastuya; Manaka, Tomoyo; Chen, Peng; Ashida, Maki; Doi, Kotaro; Katayama, Hideki; Hanawa, Takao; Nakano, Takayoshi

doi:https://doi.org/10.1016/j.addma.2021.102066

Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion

Tsutsumi, Yusuke; Ishimoto, Takuya; Oishi, Tastuya et al.

Additive Manufacturing, 2021, 45, 102066

Number of Access:732（2025-07-18 10:22 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89773

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Title	Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion
Creator	NRID 1000060447498 1000060447498 CreatorName Tsutsumi, 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
	CreatorName Oishi, Tastuya
	CreatorName Manaka, Tomoyo
	CreatorName Chen, Peng
	CreatorName Ashida, Maki
	CreatorName Doi, Kotaro
	CreatorName Katayama, Hideki
	NRID 1000090142736 1000090142736 CreatorName Hanawa, Takao
	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	Austenitic stainless steel
	Biomedical applications
	Corrosion resistance
	Inclusion
	Laser powder bed fusion
Description	Tsutsumi Y., Ishimoto T., Oishi T., et al. Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion. Additive Manufacturing, 45, 102066. https://doi.org/10.1016/j.addma.2021.102066.
Abstract	Improvement of corrosion resistance of austenitic 316L stainless steel via laser powder bed fusion (LPBF) is currently a prominent research topic; however, the effects of crystallographic texture and the related grain boundary density on the corrosion resistance of LPBF-fabricated parts have not been elucidated. For biomedical applications, crystallographic texture control from a single crystalline-like to randomly oriented polycrystalline microstructure is highly attractive for optimizing the mechanical properties (particularly the Young's modulus) of implants. An investigation of the impacts of crystallographic planes and grain boundaries exposed to the biological environment on corrosion behavior is necessary. 316L stainless steels with different crystallographic textures and grain boundary densities were successfully fabricated via LPBF. The corrosion resistances of the LPBF-fabricated specimens were comprehensively assessed by anodic polarization, dissolution, and crevice corrosion repassivation tests. The LPBF-fabricated specimens showed extremely high pitting potentials in the physiological saline compared with the commercially available counterparts, and importantly, excellent pitting corrosion resistance was observed irrespective of the crystallographic planes and grain boundary density exposed. Moreover, the LPBF-fabricated specimens did not show metastable pitting corrosion even in an accelerated test using an acid solution. The repassivation behavior of the specimens was not affected by LPBF. Such a drastic improvement in the corrosion resistances of the LPBF-fabricated specimens might be attributed to suppression of inclusion coarsening owing to the rapid cooling rate during solidification in LPBF. By using LPBF, the desired crystallographic texture can be introduced based on the desired mechanical properties without concern for corrosiveness.
Publisher	Elsevier
Source Title	Additive Manufacturing
Volume (Issue)	45
Page	102066
Date of Issued	2021-09-01
Language	English
Handle URL	https://hdl.handle.net/11094/89773
eISSN	22148604
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1016/j.addma.2021.102066
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Additive Manufacturing. 2021, 45, p. 102066
DC.title	Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion
DC.creator	Tsutsumi, Yusuke
	Ishimoto, Takuya
	Oishi, Tastuya
	Manaka, Tomoyo
	Chen, Peng
	Ashida, Maki
	Doi, Kotaro
	Katayama, Hideki
	Hanawa, Takao
	Nakano, Takayoshi
DC.publisher	Elsevier
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-09-01
DC.identifier	https://doi.org/10.1016/j.addma.2021.102066
DC.subject	Austenitic stainless steel
	Biomedical applications
	Corrosion resistance
	Inclusion
	Laser powder bed fusion
DC.description	Tsutsumi Y., Ishimoto T., Oishi T., et al. Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion. Additive Manufacturing, 45, 102066. https://doi.org/10.1016/j.addma.2021.102066.
DCTERMS.abstract	Improvement of corrosion resistance of austenitic 316L stainless steel via laser powder bed fusion (LPBF) is currently a prominent research topic; however, the effects of crystallographic texture and the related grain boundary density on the corrosion resistance of LPBF-fabricated parts have not been elucidated. For biomedical applications, crystallographic texture control from a single crystalline-like to randomly oriented polycrystalline microstructure is highly attractive for optimizing the mechanical properties (particularly the Young's modulus) of implants. An investigation of the impacts of crystallographic planes and grain boundaries exposed to the biological environment on corrosion behavior is necessary. 316L stainless steels with different crystallographic textures and grain boundary densities were successfully fabricated via LPBF. The corrosion resistances of the LPBF-fabricated specimens were comprehensively assessed by anodic polarization, dissolution, and crevice corrosion repassivation tests. The LPBF-fabricated specimens showed extremely high pitting potentials in the physiological saline compared with the commercially available counterparts, and importantly, excellent pitting corrosion resistance was observed irrespective of the crystallographic planes and grain boundary density exposed. Moreover, the LPBF-fabricated specimens did not show metastable pitting corrosion even in an accelerated test using an acid solution. The repassivation behavior of the specimens was not affected by LPBF. Such a drastic improvement in the corrosion resistances of the LPBF-fabricated specimens might be attributed to suppression of inclusion coarsening owing to the rapid cooling rate during solidification in LPBF. By using LPBF, the desired crystallographic texture can be introduced based on the desired mechanical properties without concern for corrosiveness.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	89773
citation_title	Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion
citation_author	Tsutsumi, Yusuke
	Ishimoto, Takuya
	Oishi, Tastuya
	Manaka, Tomoyo
	Chen, Peng
	Ashida, Maki
	Doi, Kotaro
	Katayama, Hideki
	Hanawa, Takao
	Nakano, Takayoshi
citation_publisher	Elsevier
citation_language	English
citation_date	2021-09-01
citation_journal_title	Additive Manufacturing
citation_volume	45
citation_firstpage	102066
citation_doi	https://doi.org/10.1016/j.addma.2021.102066
citation_public_url	https://hdl.handle.net/11094/89773

Crystallographic texture- and grain boundary density-independent improvement of corrosion resistance in austenitic 316L stainless steel fabricated via laser powder bed fusion

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