Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies

Takase, Aya; Ishimoto, Takuya; Suganuma, Ryoya; Nakano, Takayoshi

doi:https://doi.org/10.1016/j.addma.2021.102257

Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies

Takase, Aya; Ishimoto, Takuya; Suganuma, Ryoya et al.

Additive Manufacturing, 2021, 47, 102257

アクセス数:147件（2025-04-03 22:18 集計）

固定URL: https://hdl.handle.net/11094/89766

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タイトル	Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies
著者	著者名 Takase, Aya
	NRID 1000050508835 1000050508835 ORCID 0000-0003-0081-0591 0000-0003-0081-0591 researchmap permalink i_taku i_taku Scopus Author ID 35310484700 35310484700 著者名 Ishimoto, Takuya
	著者名 Suganuma, Ryoya
	NRID 1000030243182 1000030243182 ORCID 0000-0001-8052-1698 0000-0001-8052-1698 researchmap permalink read0013987 read0013987 Scopus Author ID 7403896013 7403896013 著者名 Nakano, Takayoshi
キーワード等	Phase stability
	Powder bed fusion
	Residual stress
	Thermal history
	Titanium alloys
内容	Takase A., Ishimoto T., Suganuma R., et al. Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies. Additive Manufacturing, 47, 102257. https://doi.org/10.1016/j.addma.2021.102257.
抄録	The differences between the physicochemical properties of the laser and electron beam powder bed fusion (L- and EB-PBF) methods are yet to be explored further. In particular, the differences in the residual stress and phase stability of alloys with unstable phases remain unexplored. The present work is the first to systematically investigate how the heat source type and process parameters affect the surface residual stress and phase stability of an unstable β-type titanium alloy, Ti–15Mo–5Zr–3Al. The surface residual stress and β-phase behavior were studied using high-precision X-ray diffraction (HP-XRD). Significant differences were observed between the two methods. The L-PBF-made specimens exhibited tensile residual stresses of up to 400 MPa in the surface area. HP-XRD analysis revealed a stress-induced lattice distortion, interpreted as a transitional state between the β-phase and α”-phase. In contrast, the EB-PBF-made specimens showed no significant residual stress and had an undistorted β-phase coexisting with the hexagonal α-phase caused by elemental partitioning. This study provides new insights into the previously neglected effects of L-PBF and EB-PBF in unstable β-type titanium alloys.
出版者	Elsevier
収録物名	Additive Manufacturing
巻(号)	47
ページ	102257
刊行年月	2021-11-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/89766
eISSN	22148604
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1016/j.addma.2021.102257
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Additive Manufacturing. 2021, 47, p. 102257
DC.title	Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies
DC.creator	Takase, Aya
	Ishimoto, Takuya
	Suganuma, Ryoya
	Nakano, Takayoshi
DC.publisher	Elsevier
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-11-01
DC.identifier	https://doi.org/10.1016/j.addma.2021.102257
DC.subject	Phase stability
	Powder bed fusion
	Residual stress
	Thermal history
	Titanium alloys
DC.description	Takase A., Ishimoto T., Suganuma R., et al. Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies. Additive Manufacturing, 47, 102257. https://doi.org/10.1016/j.addma.2021.102257.
DCTERMS.abstract	The differences between the physicochemical properties of the laser and electron beam powder bed fusion (L- and EB-PBF) methods are yet to be explored further. In particular, the differences in the residual stress and phase stability of alloys with unstable phases remain unexplored. The present work is the first to systematically investigate how the heat source type and process parameters affect the surface residual stress and phase stability of an unstable β-type titanium alloy, Ti–15Mo–5Zr–3Al. The surface residual stress and β-phase behavior were studied using high-precision X-ray diffraction (HP-XRD). Significant differences were observed between the two methods. The L-PBF-made specimens exhibited tensile residual stresses of up to 400 MPa in the surface area. HP-XRD analysis revealed a stress-induced lattice distortion, interpreted as a transitional state between the β-phase and α”-phase. In contrast, the EB-PBF-made specimens showed no significant residual stress and had an undistorted β-phase coexisting with the hexagonal α-phase caused by elemental partitioning. This study provides new insights into the previously neglected effects of L-PBF and EB-PBF in unstable β-type titanium alloys.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	89766
citation_title	Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies
citation_author	Takase, Aya
	Ishimoto, Takuya
	Suganuma, Ryoya
	Nakano, Takayoshi
citation_publisher	Elsevier
citation_language	英語
citation_date	2021-11-01
citation_journal_title	Additive Manufacturing
citation_volume	47
citation_firstpage	102257
citation_doi	https://doi.org/10.1016/j.addma.2021.102257
citation_public_url	https://hdl.handle.net/11094/89766

Surface residual stress and phase stability in unstable β-type Ti–15Mo–5Zr–3Al alloy manufactured by laser and electron beam powder bed fusion technologies

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