Author(s): Antunes, L. H.M. ; Hoyos, J. J. ; Andrade, T. C. ; Sarvezuk, P. W.C. ; Wu, L. ; Ávila, J. A. [UNESP] ; Oliveira, J. P. ; Schell, N. ; Jardini, A. L. ; Žilková, J. ; da Silva Farina, P. F. ; Abreu, H. F.G. ; Béreš, M.
Date: 2021
Persistent ID: http://hdl.handle.net/11449/206472
Origin: Oasisbr
Subject(s): CoCrMo alloy; in-situ synchrotron X-ray diffraction; Martensitic phase transformation; Peak broadening; Variant selection
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
CALIPSOplus
Fundação para a Ciência e a Tecnologia
The wear resistance of the biomedical low-carbon Co-28Cr-6Mo (wt.-%) alloy is primarily determined by the onset and magnitude of the face-centered cubic to hexagonal close-packed deformation-induced martensitic phase transformation. In metal-on-metal joint bearings, local plastic deformation occurs on the surface and in the subsurface regions. This can cause deformation-assisted structural changes in the material, such as mechanical twinning and/or martensitic transformation. In the present work, we report the structural transition on the surface and bulk of a laser powder bed fusion additively manufactured Co-28Cr-6Mo alloy in response to an externally imposed load. This study was possible using in-situ synchrotron X-ray diffraction at two different energy levels. Our results revealed that from tensile deformation to fracture, the phase transformation kinetics and magnitude were marginally higher on the surface. During transformation, {200}FCC peak broadening was observed in the bulk and this was attributed to stacking fault accumulation.
School of Mechanical Engineering University of Campinas, Rua Mendeleyev, 200
Department of Mechanical Engineering Faculty of Engineering University of Buenos Aires, Av. Paseo Colón 850
Department of Metallurgical and Materials Engineering Federal University of Ceará, Av. Humberto Monte
Department of Physics Federal University of Technology - Paraná, Via Rosalina Maria dos Santos, 1233
National Laboratory of Synchrotron Light – LNLS CNPEM, R. Giuseppe Máximo Scolfaro 10000
UNESP São Paulo State University São João da Boa Vista
Department of Mechanical and Industrial Engineering NOVA University of Lisbon
National Institute of Biofabrication Faculty of Chemical Engineering University of Campinas, Av. Albert Einstein 500
Department of Electrical Engineering and Mechatronics Technical University of Košice, Letná 9
Helmholtz-Zentrum Geesthacht Institute of Materials Research, Max-Planck-Str. 1
UNESP São Paulo State University São João da Boa Vista
CAPES: 001
CALIPSOplus: 730872
Fundação para a Ciência e a Tecnologia: UIDB/00667/2020
