Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase

Hagihara, Koji; Okamoto, Takuya; Ueyama, Ryohei; Yamasaki, Michiaki; Kawamura, Yoshihito; Nakano, Takayoshi

doi:https://doi.org/10.2320/matertrans.MT-MM2019001

Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase

Hagihara, Koji; Okamoto, Takuya; Ueyama, Ryohei et al.

Materials Transactions, 2020, 61(5), 821-827

Number of Access:648（2025-08-21 04:36 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89893

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Title	Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase
Creator	NRID 1000010346182 1000010346182 researchmap permalink read0191194 read0191194 Scopus Author ID 7007016278 7007016278 CreatorName Hagihara, Koji
	CreatorName Okamoto, Takuya
	CreatorName Ueyama, Ryohei
	NRID 1000050343885 1000050343885 CreatorName Yamasaki, Michiaki
	NRID 1000030250814 1000030250814 CreatorName Kawamura, Yoshihito
	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	Deformation band
	Dislocation
	Long-period stacking ordered phase
	Magnesium alloy
	Plastic deformation
Description	Hagihara K., Okamoto T., Ueyama R., et al. Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase. Materials Transactions 61, 1821 (2020); https://doi.org/10.2320/matertrans.MT-MM2019001.
Abstract	The variation in the deformation behavior of a directionally solidified (DS) Mg-based long-period stacking ordered (LPSO)-phase crystal depending on the loading orientation was examined. The frequency of formation of the beak-like shape of the deformation band, which is known as one of the important deformation mechanisms in the LPSO phase, monotonically decreased as the inclination angle of the loading orientation with respect to the crystal growth direction in the DS crystal increased, and was accompanied by a decrease in the yield stress due to the activation of basal slip. Deformation bands formed along a direction approximately perpendicular to the grain boundary independent of the loading orientation. The crystal rotation axes selected in the deformation bands were perpendicular to [0001] in almost all grains, independent of the loading orientation. However, the rotation axes in the bands were not fixed but varied between h1010 - i and h1120 - i; this variation was correlated with the loading axis. These observed features strongly suggest that the deformation bands formed in the LPSO phase are predominantly deformation kink bands and that the formation mechanism itself does not vary with the loading orientation but instead its details. The selectivity of the crystal rotation axis in the kink band is strongly affected by the loading orientation.
Publisher	The Japan Institute of Metals and Materials
Source Title	Materials Transactions
Volume (Issue)	61(5)
Page	821-827
Date of Issued	2020-03-01
Language	English
Handle URL	https://hdl.handle.net/11094/89893
PISSN	13459678
eISSN	13475320
NCID	AA1151294X
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.2320/matertrans.MT-MM2019001
Access Rights	open access
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	Materials Transactions. 2020, 61(5), p. 821-827
DC.title	Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase
DC.creator	Hagihara, Koji
	Okamoto, Takuya
	Ueyama, Ryohei
	Yamasaki, Michiaki
	Kawamura, Yoshihito
	Nakano, Takayoshi
DC.publisher	The Japan Institute of Metals and Materials
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2020-03-01
DC.identifier	https://doi.org/10.2320/matertrans.MT-MM2019001
DC.subject	Deformation band
	Dislocation
	Long-period stacking ordered phase
	Magnesium alloy
	Plastic deformation
DC.description	Hagihara K., Okamoto T., Ueyama R., et al. Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase. Materials Transactions 61, 1821 (2020); https://doi.org/10.2320/matertrans.MT-MM2019001.
DCTERMS.abstract	The variation in the deformation behavior of a directionally solidified (DS) Mg-based long-period stacking ordered (LPSO)-phase crystal depending on the loading orientation was examined. The frequency of formation of the beak-like shape of the deformation band, which is known as one of the important deformation mechanisms in the LPSO phase, monotonically decreased as the inclination angle of the loading orientation with respect to the crystal growth direction in the DS crystal increased, and was accompanied by a decrease in the yield stress due to the activation of basal slip. Deformation bands formed along a direction approximately perpendicular to the grain boundary independent of the loading orientation. The crystal rotation axes selected in the deformation bands were perpendicular to [0001] in almost all grains, independent of the loading orientation. However, the rotation axes in the bands were not fixed but varied between h1010 - i and h1120 - i; this variation was correlated with the loading axis. These observed features strongly suggest that the deformation bands formed in the LPSO phase are predominantly deformation kink bands and that the formation mechanism itself does not vary with the loading orientation but instead its details. The selectivity of the crystal rotation axis in the kink band is strongly affected by the loading orientation.
DC.format	89893
citation_title	Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase
citation_author	Hagihara, Koji
	Okamoto, Takuya
	Ueyama, Ryohei
	Yamasaki, Michiaki
	Kawamura, Yoshihito
	Nakano, Takayoshi
citation_publisher	The Japan Institute of Metals and Materials
citation_language	English
citation_date	2020-03-01
citation_journal_title	Materials Transactions
citation_volume	61
citation_issue	5
citation_firstpage	821
citation_lastpage	827
citation_doi	https://doi.org/10.2320/matertrans.MT-MM2019001
citation_public_url	https://hdl.handle.net/11094/89893

Loading orientation dependence of the formation behavior of deformation kink bands in the Mg-based long-period stacking ordered (LPSO) phase

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