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Original title:
Influence of ball material on the resulting fatigue life of thermal sprayed HVOF coatings in dynamic impact testing
Authors: Duliškovič, J. ; Daniel, Josef ; Houdková, Š.
Document type: Papers
Conference/Event: METAL 2023. International Conference on Metallurgy and Materials /32./, Brno (CZ), 20230517
Year: 2024
Language: eng
Abstract: Dynamic impact wear, i.e. contact between two components in the presence of high cyclic local loads, is a challenging failure mode that occurs in many mechanical applications. Many previous studies have confirmed that dynamic impact testing is suitable for evaluating the contact fatigue of thermal sprayed coatings. However, the effect of the test parameters on the resulting lifetime is unclear. The aim of this study describes the effect of the ball material used in the dynamic impact test on the resulting fatigue life of the HVOF thermal sprayed coating. Three test balls made of WC/Co alloy, Si3N4 silicon nitride and 440 C steel were chosen for this study. Dynamic impaction testing was carried out on the Cr3C2-NiCr coating, which was sprayed by HVOF on a 1.2376 high-speed steel substrate. The impact lifetime was described by the number of critical impacts, i.e. the number of impacts before coating fatigue occurs. Furthermore, the depth and volume of impact craters were measured. Using scanning electron microscopy (SEM), the surface of the impacts as well as the microstructure of the coating on the cross-section in the region of the impacts were observed. Furthermore, the mechanism of crack propagation in the coating and the microstructure of the indentor were investigated.
Keywords: Cr3C2-NiCr; dynamic impact test; fatigue; HVOF
Project no.: TH75020003 (CEP)
Funding provider: GA TA ČR
Host item entry: METAL 2023. 32nd International Conference on Metallurgy and Materials. Conference Proceedings, ISBN 978-80-88365-12-9, ISSN 2694-9296
Note: Související webová stránka: https://www.confer.cz/metal/2023/4716-influence-of-ball-material-on-the-resulting-fatigue-life-of-thermal-sprayed-hvof-coatings-in-dynamic-impact-testing
Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0351060
Permalink: http://www.nusl.cz/ntk/nusl-541152
The record appears in these collections:
Research > Institutes ASCR > Institute of Scientific Instruments
Conference materials > Papers
Authors: Duliškovič, J. ; Daniel, Josef ; Houdková, Š.
Document type: Papers
Conference/Event: METAL 2023. International Conference on Metallurgy and Materials /32./, Brno (CZ), 20230517
Year: 2024
Language: eng
Abstract: Dynamic impact wear, i.e. contact between two components in the presence of high cyclic local loads, is a challenging failure mode that occurs in many mechanical applications. Many previous studies have confirmed that dynamic impact testing is suitable for evaluating the contact fatigue of thermal sprayed coatings. However, the effect of the test parameters on the resulting lifetime is unclear. The aim of this study describes the effect of the ball material used in the dynamic impact test on the resulting fatigue life of the HVOF thermal sprayed coating. Three test balls made of WC/Co alloy, Si3N4 silicon nitride and 440 C steel were chosen for this study. Dynamic impaction testing was carried out on the Cr3C2-NiCr coating, which was sprayed by HVOF on a 1.2376 high-speed steel substrate. The impact lifetime was described by the number of critical impacts, i.e. the number of impacts before coating fatigue occurs. Furthermore, the depth and volume of impact craters were measured. Using scanning electron microscopy (SEM), the surface of the impacts as well as the microstructure of the coating on the cross-section in the region of the impacts were observed. Furthermore, the mechanism of crack propagation in the coating and the microstructure of the indentor were investigated.
Keywords: Cr3C2-NiCr; dynamic impact test; fatigue; HVOF
Project no.: TH75020003 (CEP)
Funding provider: GA TA ČR
Host item entry: METAL 2023. 32nd International Conference on Metallurgy and Materials. Conference Proceedings, ISBN 978-80-88365-12-9, ISSN 2694-9296
Note: Související webová stránka: https://www.confer.cz/metal/2023/4716-influence-of-ball-material-on-the-resulting-fatigue-life-of-thermal-sprayed-hvof-coatings-in-dynamic-impact-testing
Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0351060
Permalink: http://www.nusl.cz/ntk/nusl-541152
The record appears in these collections:
Research > Institutes ASCR > Institute of Scientific Instruments
Conference materials > Papers
Record created 2024-02-25, last modified 2024-07-20