Influence of carbon and nitrogen addition on microstructure and hot deformation behavior of biomedical Co-Cr-Mo alloy

Yunping Li; Yui Yamashita; Ning Tang; Bin Liu; Shingo Kurosu; Hiroaki Matsumoto; Yuichiro Koizumi; Akihiko Chiba

doi:10.1016/j.matchemphys.2012.05.069

Influence of carbon and nitrogen addition on microstructure and hot deformation behavior of biomedical Co-Cr-Mo alloy

Yunping Li, Yui Yamashita, Ning Tang, Bin Liu, Shingo Kurosu, Hiroaki Matsumoto, Yuichiro Koizumi, Akihiko Chiba

New Industry Creation Hatchery Center (NICHe)

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

21 Citations (Scopus)

Abstract

The microstructures and hot deformation behaviors of the Co-29Cr-6Mo (CCM) alloy and the same alloy with C and N addition (CCMCN) were compared and analyzed systematically. The results indicated that the γ phase of this alloy could be stabilized effectively by the slight addition of the elements C and N; however, M(Cr,Mo) ₂₃C ₆ precipitates were observed in the CCMCN alloy according to the results of the X-ray diffraction (XRD) pattern and electron probe micro analyzer (EPMA). The grain sizes of these two alloys after dynamic recrystallization (DRX) are influenced to a certain degree by the balance between athermal martensitic transformation during cooling in the CCM alloy and the existence of carbide in the CCMCN alloy, respectively. Athermal martensitic transformation during the cooling process significantly enhanced the grain refinement process in the CCM alloy at lower strain levels; while carbide helped to further refine grain size in the CCMCN alloy more significantly at high strain levels.

Original language	English
Pages (from-to)	849-854
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	135
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2012.05.069
Publication status	Published - 2012 Aug 15

Keywords

Alloys
Biomaterials
Dynamic recrystallization
Precipitation

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10.1016/j.matchemphys.2012.05.069

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title = "Influence of carbon and nitrogen addition on microstructure and hot deformation behavior of biomedical Co-Cr-Mo alloy",

abstract = "The microstructures and hot deformation behaviors of the Co-29Cr-6Mo (CCM) alloy and the same alloy with C and N addition (CCMCN) were compared and analyzed systematically. The results indicated that the γ phase of this alloy could be stabilized effectively by the slight addition of the elements C and N; however, M(Cr,Mo) 23C 6 precipitates were observed in the CCMCN alloy according to the results of the X-ray diffraction (XRD) pattern and electron probe micro analyzer (EPMA). The grain sizes of these two alloys after dynamic recrystallization (DRX) are influenced to a certain degree by the balance between athermal martensitic transformation during cooling in the CCM alloy and the existence of carbide in the CCMCN alloy, respectively. Athermal martensitic transformation during the cooling process significantly enhanced the grain refinement process in the CCM alloy at lower strain levels; while carbide helped to further refine grain size in the CCMCN alloy more significantly at high strain levels.",

keywords = "Alloys, Biomaterials, Dynamic recrystallization, Precipitation",

author = "Yunping Li and Yui Yamashita and Ning Tang and Bin Liu and Shingo Kurosu and Hiroaki Matsumoto and Yuichiro Koizumi and Akihiko Chiba",

note = "Funding Information: This research was supported by a Cooperation of Innovative Technology and Advanced Research in Evolutional Area from Ministry of Education, Culture, Sports, Science and Technology of Japan . This work was partly supported by a Grant-in-Aid for Scientific Research, Japan .",

year = "2012",

month = aug,

day = "15",

doi = "10.1016/j.matchemphys.2012.05.069",

language = "English",

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pages = "849--854",

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T1 - Influence of carbon and nitrogen addition on microstructure and hot deformation behavior of biomedical Co-Cr-Mo alloy

AU - Li, Yunping

AU - Yamashita, Yui

AU - Tang, Ning

AU - Liu, Bin

AU - Kurosu, Shingo

AU - Matsumoto, Hiroaki

AU - Koizumi, Yuichiro

AU - Chiba, Akihiko

N1 - Funding Information: This research was supported by a Cooperation of Innovative Technology and Advanced Research in Evolutional Area from Ministry of Education, Culture, Sports, Science and Technology of Japan . This work was partly supported by a Grant-in-Aid for Scientific Research, Japan .

PY - 2012/8/15

Y1 - 2012/8/15

N2 - The microstructures and hot deformation behaviors of the Co-29Cr-6Mo (CCM) alloy and the same alloy with C and N addition (CCMCN) were compared and analyzed systematically. The results indicated that the γ phase of this alloy could be stabilized effectively by the slight addition of the elements C and N; however, M(Cr,Mo) 23C 6 precipitates were observed in the CCMCN alloy according to the results of the X-ray diffraction (XRD) pattern and electron probe micro analyzer (EPMA). The grain sizes of these two alloys after dynamic recrystallization (DRX) are influenced to a certain degree by the balance between athermal martensitic transformation during cooling in the CCM alloy and the existence of carbide in the CCMCN alloy, respectively. Athermal martensitic transformation during the cooling process significantly enhanced the grain refinement process in the CCM alloy at lower strain levels; while carbide helped to further refine grain size in the CCMCN alloy more significantly at high strain levels.

AB - The microstructures and hot deformation behaviors of the Co-29Cr-6Mo (CCM) alloy and the same alloy with C and N addition (CCMCN) were compared and analyzed systematically. The results indicated that the γ phase of this alloy could be stabilized effectively by the slight addition of the elements C and N; however, M(Cr,Mo) 23C 6 precipitates were observed in the CCMCN alloy according to the results of the X-ray diffraction (XRD) pattern and electron probe micro analyzer (EPMA). The grain sizes of these two alloys after dynamic recrystallization (DRX) are influenced to a certain degree by the balance between athermal martensitic transformation during cooling in the CCM alloy and the existence of carbide in the CCMCN alloy, respectively. Athermal martensitic transformation during the cooling process significantly enhanced the grain refinement process in the CCM alloy at lower strain levels; while carbide helped to further refine grain size in the CCMCN alloy more significantly at high strain levels.

KW - Alloys

KW - Biomaterials

KW - Dynamic recrystallization

KW - Precipitation

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Influence of carbon and nitrogen addition on microstructure and hot deformation behavior of biomedical Co-Cr-Mo alloy

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