The damage process in a biomedical Co-29Cr-6Mo-0.14N alloy analyzed by X-ray tomography and electron backscattered diffraction

Shingo Kurosu; Hiroaki Matsumoto; Akihiko Chiba; Caroline Landron; Damien Fabregue; Eric Maire

doi:10.1016/j.scriptamat.2010.07.032

The damage process in a biomedical Co-29Cr-6Mo-0.14N alloy analyzed by X-ray tomography and electron backscattered diffraction

Shingo Kurosu, Hiroaki Matsumoto, Akihiko Chiba, Caroline Landron, Damien Fabregue, Eric Maire

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The damage process leading to fracture during tensile testing of a biomedical grade Co-29Cr-6Mo-0.14N alloy was analyzed on the basis of three-dimensional damage observation using X-ray tomography and electron backscattered diffraction of the fractured specimen. Initial cracking occurred at grain and annealing twin boundaries, where strain concentrates due to impingement of -hcp plates formed through strain-induced martensitic transformation (SIMT). Cracks propagated along the interface between the γ-fcc matrix and SIMTed -hcp on {1 1 1}, resulting in the occurrence of a quasi-cleavage fracture.

Original language	English
Pages (from-to)	367-370
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2010.07.032
Publication status	Published - 2011 Mar

Keywords

Cobalt-chromium-molybdenum alloys
Fracture
Strain-induced martensitic transformation
X-ray tomography

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10.1016/j.scriptamat.2010.07.032

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title = "The damage process in a biomedical Co-29Cr-6Mo-0.14N alloy analyzed by X-ray tomography and electron backscattered diffraction",

abstract = "The damage process leading to fracture during tensile testing of a biomedical grade Co-29Cr-6Mo-0.14N alloy was analyzed on the basis of three-dimensional damage observation using X-ray tomography and electron backscattered diffraction of the fractured specimen. Initial cracking occurred at grain and annealing twin boundaries, where strain concentrates due to impingement of -hcp plates formed through strain-induced martensitic transformation (SIMT). Cracks propagated along the interface between the γ-fcc matrix and SIMTed -hcp on {1 1 1}, resulting in the occurrence of a quasi-cleavage fracture.",

keywords = "Cobalt-chromium-molybdenum alloys, Fracture, Strain-induced martensitic transformation, X-ray tomography",

author = "Shingo Kurosu and Hiroaki Matsumoto and Akihiko Chiba and Caroline Landron and Damien Fabregue and Eric Maire",

note = "Funding Information: This research was supported by a cooperation between Innovative Technology and Advanced Research in Evolving Areas grant from the Ministry of Education, Culture, Sports, Science, and Technology of Japan . Marco Dimichiele was our contact at the ESRF during X-ray tomography, and J{\'e}r{\^o}me Adrien helped us with the experiments.",

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doi = "10.1016/j.scriptamat.2010.07.032",

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AU - Matsumoto, Hiroaki

AU - Chiba, Akihiko

AU - Landron, Caroline

AU - Fabregue, Damien

AU - Maire, Eric

N1 - Funding Information: This research was supported by a cooperation between Innovative Technology and Advanced Research in Evolving Areas grant from the Ministry of Education, Culture, Sports, Science, and Technology of Japan . Marco Dimichiele was our contact at the ESRF during X-ray tomography, and Jérôme Adrien helped us with the experiments.

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AB - The damage process leading to fracture during tensile testing of a biomedical grade Co-29Cr-6Mo-0.14N alloy was analyzed on the basis of three-dimensional damage observation using X-ray tomography and electron backscattered diffraction of the fractured specimen. Initial cracking occurred at grain and annealing twin boundaries, where strain concentrates due to impingement of -hcp plates formed through strain-induced martensitic transformation (SIMT). Cracks propagated along the interface between the γ-fcc matrix and SIMTed -hcp on {1 1 1}, resulting in the occurrence of a quasi-cleavage fracture.

KW - Cobalt-chromium-molybdenum alloys

KW - Fracture

KW - Strain-induced martensitic transformation

KW - X-ray tomography

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The damage process in a biomedical Co-29Cr-6Mo-0.14N alloy analyzed by X-ray tomography and electron backscattered diffraction

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Keywords

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