Pereira, JC.; Zambrano, JC.; Rayón, E.; Yañez, A.; Amigó, V. (2018). Mechanical and microstructural characterization of MCrAlY coatings produced by laser cladding: The influence of the Ni, Co and Al content. Surface and Coatings Technology. 338:22-31. https://doi.org/10.1016/j.surfcoat.2018.01.073
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/155001
Title:
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Mechanical and microstructural characterization of MCrAlY coatings produced by laser cladding: The influence of the Ni, Co and Al content
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Author:
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Pereira, J. C.
Zambrano, J. C.
Rayón, E.
Yañez, A.
Amigó, Vicente
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials
Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials
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Issued date:
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Abstract:
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[EN] Laser metal deposition (LMD) and laser cladding (LC) are alternative methods to thermal spraying processes to produce dense, high-quality coatings. In this work, two MCrAlY coatings (M=Ni+Co) have been prepared onto ...[+]
[EN] Laser metal deposition (LMD) and laser cladding (LC) are alternative methods to thermal spraying processes to produce dense, high-quality coatings. In this work, two MCrAlY coatings (M=Ni+Co) have been prepared onto stainless steel substrate using a coaxial LC technique under two different Ni/Co and Al proportions. The mechanical properties were then evaluated with microhardness, nanoindentation, and three-point bending tests.
The microstructure and composition of coatings were characterized by X-ray Diffraction (XRD) analysis and Field Emission Electron Microscopy (FESEM) coupled to an Energy Dispersive Spectroscopy (EDS) detector. The study revealed that the ¿/ß phases formed in the MCrAlY coating microstructure result in a lower elastic modulus than the austenitic stainless steel substrate, while an inverse behavior for hardness was observed due the presence of the aluminum-rich ß-phase. Under flexural loads, the failure of coatings showed plasticity and anisotropy characteristics depending on the two laser tracks orientations evaluated.
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Subjects:
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MCrAlY
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Laser cladding
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Thermal barrier coatings
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Nanoindentation hardness
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Elastic modulus
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Ductility
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Surface and Coatings Technology. (issn:
0257-8972
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DOI:
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10.1016/j.surfcoat.2018.01.073
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Publisher:
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Elsevier
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Publisher version:
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https://doi.org/10.1016/j.surfcoat.2018.01.073
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Project ID:
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info:eu-repo/grantAgreement/MICINN//MAT2011-28492-C03-01/ES/CARACTERIZACION DE RECUBRRIMIENTOS DE BARRERA TERMICA OBTENIDOS POR LASER/
info:eu-repo/grantAgreement/GVA//ACOMP%2F2013%2F114/
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Thanks:
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The authors would like to acknowledge the financial support of the Ministry of Science and Innovation of the Government of Spain through research project MAT2011-28492-C03, and the support of the Generalitat Valenciana ...[+]
The authors would like to acknowledge the financial support of the Ministry of Science and Innovation of the Government of Spain through research project MAT2011-28492-C03, and the support of the Generalitat Valenciana through ACOMP/2013/114
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Type:
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Artículo
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