The morphology of ductile cast iron surface damaged by cavitation
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The study was designed to investigate the cavitation behavior of the ductile cast iron with microstructure consisting of spheroidal graphite in a predominantly ferrite matrix with 10% pearlite. The experiments were conducted using the ultrasonically induced cavitation test method. The frequency of vibration and the peak-to-peak displacement amplitude of the horn were 20±0.5 kHz and 50ìm, respectively, with separation of 0.5 mm between the sample and the horn tip. In order to obtain the erosion curve, the mass loss measurements were performed after each exposure interval. The mass loss was recorded every 30min for a test period of 240 min. Roughness parameter Ra (the mean roughness), was used to characterize the surfaces. The cavitation rate was 1.85 higher for ductile iron compared with that of carbon steel with similar hardness, because graphite removal produces high stress concentration in cast iron. Compared with conventional mass loss measurements in assessing material degradation ...in cavitation erosion, surface roughness measurements provide an alternative and convenient method.
Кључне речи:
ductile cast iron / cavitation / morphology / graphite / roughnessИзвор:
Metallurgical & Materials Engineering, 2012, 18, 3, 165-176Издавач:
- Association of Metallurgical Engineers of Serbia
Финансирање / пројекти:
- Пројектовање, развој и примена нове генерације ADI материјала (RS-MESTD-Technological Development (TD or TR)-34015)
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Dojčinović, Marina AU - Erić, Olivera AU - Rajnović, Dragan AU - Šiđanin, Leposava AU - Baloš, Sebastijan PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2057 AB - The study was designed to investigate the cavitation behavior of the ductile cast iron with microstructure consisting of spheroidal graphite in a predominantly ferrite matrix with 10% pearlite. The experiments were conducted using the ultrasonically induced cavitation test method. The frequency of vibration and the peak-to-peak displacement amplitude of the horn were 20±0.5 kHz and 50ìm, respectively, with separation of 0.5 mm between the sample and the horn tip. In order to obtain the erosion curve, the mass loss measurements were performed after each exposure interval. The mass loss was recorded every 30min for a test period of 240 min. Roughness parameter Ra (the mean roughness), was used to characterize the surfaces. The cavitation rate was 1.85 higher for ductile iron compared with that of carbon steel with similar hardness, because graphite removal produces high stress concentration in cast iron. Compared with conventional mass loss measurements in assessing material degradation in cavitation erosion, surface roughness measurements provide an alternative and convenient method. PB - Association of Metallurgical Engineers of Serbia T2 - Metallurgical & Materials Engineering T1 - The morphology of ductile cast iron surface damaged by cavitation EP - 176 IS - 3 SP - 165 VL - 18 UR - https://hdl.handle.net/21.15107/rcub_technorep_2057 ER -
@article{ author = "Dojčinović, Marina and Erić, Olivera and Rajnović, Dragan and Šiđanin, Leposava and Baloš, Sebastijan", year = "2012", abstract = "The study was designed to investigate the cavitation behavior of the ductile cast iron with microstructure consisting of spheroidal graphite in a predominantly ferrite matrix with 10% pearlite. The experiments were conducted using the ultrasonically induced cavitation test method. The frequency of vibration and the peak-to-peak displacement amplitude of the horn were 20±0.5 kHz and 50ìm, respectively, with separation of 0.5 mm between the sample and the horn tip. In order to obtain the erosion curve, the mass loss measurements were performed after each exposure interval. The mass loss was recorded every 30min for a test period of 240 min. Roughness parameter Ra (the mean roughness), was used to characterize the surfaces. The cavitation rate was 1.85 higher for ductile iron compared with that of carbon steel with similar hardness, because graphite removal produces high stress concentration in cast iron. Compared with conventional mass loss measurements in assessing material degradation in cavitation erosion, surface roughness measurements provide an alternative and convenient method.", publisher = "Association of Metallurgical Engineers of Serbia", journal = "Metallurgical & Materials Engineering", title = "The morphology of ductile cast iron surface damaged by cavitation", pages = "176-165", number = "3", volume = "18", url = "https://hdl.handle.net/21.15107/rcub_technorep_2057" }
Dojčinović, M., Erić, O., Rajnović, D., Šiđanin, L.,& Baloš, S.. (2012). The morphology of ductile cast iron surface damaged by cavitation. in Metallurgical & Materials Engineering Association of Metallurgical Engineers of Serbia., 18(3), 165-176. https://hdl.handle.net/21.15107/rcub_technorep_2057
Dojčinović M, Erić O, Rajnović D, Šiđanin L, Baloš S. The morphology of ductile cast iron surface damaged by cavitation. in Metallurgical & Materials Engineering. 2012;18(3):165-176. https://hdl.handle.net/21.15107/rcub_technorep_2057 .
Dojčinović, Marina, Erić, Olivera, Rajnović, Dragan, Šiđanin, Leposava, Baloš, Sebastijan, "The morphology of ductile cast iron surface damaged by cavitation" in Metallurgical & Materials Engineering, 18, no. 3 (2012):165-176, https://hdl.handle.net/21.15107/rcub_technorep_2057 .