Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal

Nakano, Takayoshi; Hagihara, Koji; Ribeiro, Ana R.; Fujii, Yusuke; Todo, Tsubasa; Fukushima, Ryo; Rocha, Luís Augusto

doi:https://doi.org/10.1016/j.wear.2021.203758

Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal

Nakano, Takayoshi; Hagihara, Koji; Ribeiro, Ana R. et al.

Wear, 2021, 478-479, 203758

Number of Access:490（2025-08-21 04:37 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89774

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Title	Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal
Creator	NRID 1000030243182 1000030243182 ORCID 0000-0001-8052-1698 0000-0001-8052-1698 researchmap permalink read0013987 read0013987 Scopus Author ID 7403896013 7403896013 CreatorName Nakano, Takayoshi
	NRID 1000010346182 1000010346182 researchmap permalink read0191194 read0191194 Scopus Author ID 7007016278 7007016278 CreatorName Hagihara, Koji
	CreatorName Ribeiro, Ana R.
	CreatorName Fujii, Yusuke
	CreatorName Todo, Tsubasa
	CreatorName Fukushima, Ryo
	CreatorName Rocha, Luís Augusto
Subject	Biomaterial
	Co–Cr alloy
	Hardness
	Orientation dependence
	Single crystal
	Wear
Description	Nakano T., Hagihara K., Ribeiro A.R., et al. Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal. Wear, 478-479, 203758. https://doi.org/10.1016/j.wear.2021.203758.
Abstract	This is the report clarifying the orientation dependence of the wear behavior of Co–Cr–Mo alloy. The wear resistance of the Co–Cr–Mo alloy with face-centered cubic (fcc) structure was found to be higher on the planes in order of {110}, {001} and {111}. Quantitatively, the wear resistance on {110} is 1.5 times larger than that on {111}. The tendency showed in coincident with the orientation dependence of the surface hardness, as empirically suggested. However, we additionally found in the observation of the worn surface in the fcc-single crystals that the volume fraction of the hexagonal close-packed (hcp)-phase, which was formed as the strain-induced martensite during the wear test, was larger in the same order of the wear resistance. The variation in formation frequency of the hcp-phase during the wear test can be explained by focusing on the Schmid factor along the resultant direction of the applied stress and the friction stress. On the {111} surface where the Schmid factor for the strain-induced ε-martensite formation is small, homogeneous deformation microstructure covered by it was not developed even after long-time wear, resulting in lower wear resistance. The results strongly suggest that not only the hardness, but the distribution of the ε-martensite is important to control the wear behavior of the Co–Cr alloys with the extremely low stacking fault energy, and it can be achieved by the crystal orientation control in the γ-phase.
Publisher	Elsevier
Source Title	Wear
Volume (Issue)	478-479
Page	203758
Date of Issued	2021-08-15
Language	English
Handle URL	https://hdl.handle.net/11094/89774
PISSN	00431648
NCID	AA00886835
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1016/j.wear.2021.203758
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	Wear. 2021, 478-479, p. 203758
DC.title	Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal
DC.creator	Nakano, Takayoshi
	Hagihara, Koji
	Ribeiro, Ana R.
	Fujii, Yusuke
	Todo, Tsubasa
	Fukushima, Ryo
	Rocha, Luís Augusto
DC.publisher	Elsevier
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-08-15
DC.identifier	https://doi.org/10.1016/j.wear.2021.203758
DC.subject	Biomaterial
	Co–Cr alloy
	Hardness
	Orientation dependence
	Single crystal
	Wear
DC.description	Nakano T., Hagihara K., Ribeiro A.R., et al. Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal. Wear, 478-479, 203758. https://doi.org/10.1016/j.wear.2021.203758.
DCTERMS.abstract	This is the report clarifying the orientation dependence of the wear behavior of Co–Cr–Mo alloy. The wear resistance of the Co–Cr–Mo alloy with face-centered cubic (fcc) structure was found to be higher on the planes in order of {110}, {001} and {111}. Quantitatively, the wear resistance on {110} is 1.5 times larger than that on {111}. The tendency showed in coincident with the orientation dependence of the surface hardness, as empirically suggested. However, we additionally found in the observation of the worn surface in the fcc-single crystals that the volume fraction of the hexagonal close-packed (hcp)-phase, which was formed as the strain-induced martensite during the wear test, was larger in the same order of the wear resistance. The variation in formation frequency of the hcp-phase during the wear test can be explained by focusing on the Schmid factor along the resultant direction of the applied stress and the friction stress. On the {111} surface where the Schmid factor for the strain-induced ε-martensite formation is small, homogeneous deformation microstructure covered by it was not developed even after long-time wear, resulting in lower wear resistance. The results strongly suggest that not only the hardness, but the distribution of the ε-martensite is important to control the wear behavior of the Co–Cr alloys with the extremely low stacking fault energy, and it can be achieved by the crystal orientation control in the γ-phase.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	89774
citation_title	Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal
citation_author	Nakano, Takayoshi
	Hagihara, Koji
	Ribeiro, Ana R.
	Fujii, Yusuke
	Todo, Tsubasa
	Fukushima, Ryo
	Rocha, Luís Augusto
citation_publisher	Elsevier
citation_language	English
citation_date	2021-08-15
citation_journal_title	Wear
citation_volume	478-479
citation_firstpage	203758
citation_doi	https://doi.org/10.1016/j.wear.2021.203758
citation_public_url	https://hdl.handle.net/11094/89774

Orientation dependence of the wear resistance in the Co–Cr–Mo single crystal

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