Characterization of microstructure and properties of hypereutectic al18wt%si alloys reinforced by 10%sic alloy
Apstrakt
The aim of this work was to test the influence of various process parameters to obtain composite materials based on the Al18Wt%Si alloy with addition of 10Wt%SiC.For a comparative analysis purposes, the samples obtained by rheocasting process were being casted with application of the rotation speed of 1500rpm, temperature of 565 degrees C and the time of 15 minutes.Having applied a combined stirring procedure from 500 - 1500rpm, it was noticed in the semisolid state that the best paricle distribution of the reinforcing material (SiC) was attained in the.metal matrix composite. The total time required for a compocasting process was 15 minutes; the samples were being casted from the temperature of 565 degrees C. cavitation damage of both composite samples and the samples obtained by rheocasting process was being determined with application of a modified vibration-cavitation equipment. A mass loss and an analysis of the sample surface during the experiment were used as an indicator to det...ermine the level of sample damage caused by cavitation. Test results show a very good resistance to cavitation of composite materials, facilitating a possibility to apply these materials in the conditions demanding cavitation resistance. In the case of rheocasting samples, cavitation resistance is conditioned by presence of porosity leading to faster wear.
Ključne reči:
Al - Si alloys / composite / rheocasting / cavitation resistanceIzvor:
Metalurgia International, 2012, 17, 6, 102-106Izdavač:
- Editura Stiintifica Fmr, Bucharest
Finansiranje / projekti:
- Razvoj tehnoloških postupaka livenja pod uticajem elektromagnetnog polja i tehnologija plastične prerade u toplom stanju četvorokomponentnih legura Al-Zn za specijalne namene (RS-MESTD-Technological Development (TD or TR)-34002)
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Ćosić, Milena AU - Dojčinović, Marina AU - Acimović-Pavlović, Zagorka PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1979 AB - The aim of this work was to test the influence of various process parameters to obtain composite materials based on the Al18Wt%Si alloy with addition of 10Wt%SiC.For a comparative analysis purposes, the samples obtained by rheocasting process were being casted with application of the rotation speed of 1500rpm, temperature of 565 degrees C and the time of 15 minutes.Having applied a combined stirring procedure from 500 - 1500rpm, it was noticed in the semisolid state that the best paricle distribution of the reinforcing material (SiC) was attained in the.metal matrix composite. The total time required for a compocasting process was 15 minutes; the samples were being casted from the temperature of 565 degrees C. cavitation damage of both composite samples and the samples obtained by rheocasting process was being determined with application of a modified vibration-cavitation equipment. A mass loss and an analysis of the sample surface during the experiment were used as an indicator to determine the level of sample damage caused by cavitation. Test results show a very good resistance to cavitation of composite materials, facilitating a possibility to apply these materials in the conditions demanding cavitation resistance. In the case of rheocasting samples, cavitation resistance is conditioned by presence of porosity leading to faster wear. PB - Editura Stiintifica Fmr, Bucharest T2 - Metalurgia International T1 - Characterization of microstructure and properties of hypereutectic al18wt%si alloys reinforced by 10%sic alloy EP - 106 IS - 6 SP - 102 VL - 17 UR - https://hdl.handle.net/21.15107/rcub_technorep_1979 ER -
@article{ author = "Ćosić, Milena and Dojčinović, Marina and Acimović-Pavlović, Zagorka", year = "2012", abstract = "The aim of this work was to test the influence of various process parameters to obtain composite materials based on the Al18Wt%Si alloy with addition of 10Wt%SiC.For a comparative analysis purposes, the samples obtained by rheocasting process were being casted with application of the rotation speed of 1500rpm, temperature of 565 degrees C and the time of 15 minutes.Having applied a combined stirring procedure from 500 - 1500rpm, it was noticed in the semisolid state that the best paricle distribution of the reinforcing material (SiC) was attained in the.metal matrix composite. The total time required for a compocasting process was 15 minutes; the samples were being casted from the temperature of 565 degrees C. cavitation damage of both composite samples and the samples obtained by rheocasting process was being determined with application of a modified vibration-cavitation equipment. A mass loss and an analysis of the sample surface during the experiment were used as an indicator to determine the level of sample damage caused by cavitation. Test results show a very good resistance to cavitation of composite materials, facilitating a possibility to apply these materials in the conditions demanding cavitation resistance. In the case of rheocasting samples, cavitation resistance is conditioned by presence of porosity leading to faster wear.", publisher = "Editura Stiintifica Fmr, Bucharest", journal = "Metalurgia International", title = "Characterization of microstructure and properties of hypereutectic al18wt%si alloys reinforced by 10%sic alloy", pages = "106-102", number = "6", volume = "17", url = "https://hdl.handle.net/21.15107/rcub_technorep_1979" }
Ćosić, M., Dojčinović, M.,& Acimović-Pavlović, Z.. (2012). Characterization of microstructure and properties of hypereutectic al18wt%si alloys reinforced by 10%sic alloy. in Metalurgia International Editura Stiintifica Fmr, Bucharest., 17(6), 102-106. https://hdl.handle.net/21.15107/rcub_technorep_1979
Ćosić M, Dojčinović M, Acimović-Pavlović Z. Characterization of microstructure and properties of hypereutectic al18wt%si alloys reinforced by 10%sic alloy. in Metalurgia International. 2012;17(6):102-106. https://hdl.handle.net/21.15107/rcub_technorep_1979 .
Ćosić, Milena, Dojčinović, Marina, Acimović-Pavlović, Zagorka, "Characterization of microstructure and properties of hypereutectic al18wt%si alloys reinforced by 10%sic alloy" in Metalurgia International, 17, no. 6 (2012):102-106, https://hdl.handle.net/21.15107/rcub_technorep_1979 .