Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion

Matsumoto, Ryo; Tanaka, Sotaro; Utsunomiya, Hiroshi

doi:https://doi.org/10.1016/j.jmatprotec.2021.117369

Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion

Matsumoto, Ryo; Tanaka, Sotaro; Utsunomiya, Hiroshi

Journal of Materials Processing Technology, 2022, 299, 117369

アクセス数:523件（2025-08-28 19:40 集計）

固定URL: https://hdl.handle.net/11094/93995

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タイトル	Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion
著者	NRID 1000050362645 1000050362645 ORCID 0000-0002-4477-2139 0000-0002-4477-2139 researchmap permalink ryo-matsumoto ryo-matsumoto Scopus Author ID 35512063000 35512063000 著者名 Matsumoto, Ryo
	著者名 Tanaka, Sotaro
	NRID 1000080252584 1000080252584 researchmap permalink read0042799 read0042799 Scopus Author ID 7102139699 7102139699 著者名 Utsunomiya, Hiroshi
キーワード等	Forging
	Hollow cylinder
	Plastic flow
	Stress superposition
	Torsion
内容	Matsumoto R., Tanaka S., Utsunomiya H.. Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion. Journal of Materials Processing Technology 299, 117369 (2022); https://doi.org/10.1016/j.jmatprotec.2021.117369.
抄録	Plastic flow of hollow cylinders under combining axial compression with torsion was examined in upsetting and in lateral extrusion. The hollow cylinders with initial height/outer diameter of 0.5–2.5 and initial inner/outer diameter of 0.3–0.9 were compressed/extruded and simultaneously twisted with respect to the axisymmetric forging axis in one-way or cyclic alternating. Due to superposition of torsional shear stress, the lateral metal flow was found to be assisted. Barreling of the workpiece was reduced by approximately 10 % in upsetting with torsion/compression speed of 6 °/mm. The enhancement of the plastic flow in upsetting was applied to fill up tooth cavity in lateral extrusion. The extruded tooth depth of the workpiece was approximately 5–7% larger in lateral extrusion with torsion/extrusion speed of 30°/mm. In addition, cyclic alternating torsion was effective to extrude evenly in the tooth thickness direction due to the periodic reversal of die rotation in peripheral direction.
出版者	Elsevier Ltd
収録物名	Journal of Materials Processing Technology
巻(号)	299
ページ	117369
刊行年月	2022-01-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/93995
PISSN	09240136
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1016/j.jmatprotec.2021.117369
アクセス権	open access
権利情報	© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
出版タイプ	Accepted Manuscript
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	Journal of Materials Processing Technology. 2022, 299, p. 117369
DC.title	Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion
DC.creator	Matsumoto, Ryo
	Tanaka, Sotaro
	Utsunomiya, Hiroshi
DC.publisher	Elsevier Ltd
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-01-01
DC.identifier	https://doi.org/10.1016/j.jmatprotec.2021.117369
DC.subject	Forging
	Hollow cylinder
	Plastic flow
	Stress superposition
	Torsion
DC.description	Matsumoto R., Tanaka S., Utsunomiya H.. Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion. Journal of Materials Processing Technology 299, 117369 (2022); https://doi.org/10.1016/j.jmatprotec.2021.117369.
DCTERMS.abstract	Plastic flow of hollow cylinders under combining axial compression with torsion was examined in upsetting and in lateral extrusion. The hollow cylinders with initial height/outer diameter of 0.5–2.5 and initial inner/outer diameter of 0.3–0.9 were compressed/extruded and simultaneously twisted with respect to the axisymmetric forging axis in one-way or cyclic alternating. Due to superposition of torsional shear stress, the lateral metal flow was found to be assisted. Barreling of the workpiece was reduced by approximately 10 % in upsetting with torsion/compression speed of 6 °/mm. The enhancement of the plastic flow in upsetting was applied to fill up tooth cavity in lateral extrusion. The extruded tooth depth of the workpiece was approximately 5–7% larger in lateral extrusion with torsion/extrusion speed of 30°/mm. In addition, cyclic alternating torsion was effective to extrude evenly in the tooth thickness direction due to the periodic reversal of die rotation in peripheral direction.
DC.rights	© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
DC.format	93995
citation_title	Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion
citation_author	Matsumoto, Ryo
	Tanaka, Sotaro
	Utsunomiya, Hiroshi
citation_publisher	Elsevier Ltd
citation_language	英語
citation_date	2022-01-01
citation_journal_title	Journal of Materials Processing Technology
citation_volume	299
citation_firstpage	117369
citation_doi	https://doi.org/10.1016/j.jmatprotec.2021.117369
citation_public_url	https://hdl.handle.net/11094/93995

Enhancement of plastic flow in lateral direction by torsional oscillation in upsetting and lateral extrusion

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