Radović, Ljubica

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orcid::0000-0002-5204-983X
  • Radović, Ljubica (4)
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Author's Bibliography

The effect of friction stirs welding speed on microstructure, mechanical properties and IGC of EN AW-5083 plates

Pavlović, Miloš; Radović, Ljubica; Radisavljević, Igor; Radović, Nenad

(2019)

TY  - JOUR
AU  - Pavlović, Miloš
AU  - Radović, Ljubica
AU  - Radisavljević, Igor
AU  - Radović, Nenad
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4281
AB  - The aim of this work was to evaluate the influence of welding speed on microstructure, mechanical properties, as well as Intergranular corrosion (IGC) susceptibility of EN AW-5083 alloy welded using FSW. FSW was performed using constant rotation speed of 750 Rev/min, while welding speed was varied from 73 mm/min, 150 mm/min to 190 mm/min. Results show that increase of welding speed lead to decrease of the size of the nugget. This behavior is attributed to decrease of heat input during welding. Accordingly, lower grain size provides increase of the strength. All tested welds are resistant to IGC, evaluating by mass loss according to NAMLT test, and resistivity slightly decrease with increasing welding speed.
T2  - Advanced Technologies and Materials
T1  - The effect of friction stirs welding speed on microstructure, mechanical properties and IGC of EN AW-5083 plates
EP  - 13
IS  - 1
SP  - 7
VL  - 44
DO  - 10.24867/ATM-2019-1-002
ER  - 
@article{
author = "Pavlović, Miloš and Radović, Ljubica and Radisavljević, Igor and Radović, Nenad",
year = "2019",
abstract = "The aim of this work was to evaluate the influence of welding speed on microstructure, mechanical properties, as well as Intergranular corrosion (IGC) susceptibility of EN AW-5083 alloy welded using FSW. FSW was performed using constant rotation speed of 750 Rev/min, while welding speed was varied from 73 mm/min, 150 mm/min to 190 mm/min. Results show that increase of welding speed lead to decrease of the size of the nugget. This behavior is attributed to decrease of heat input during welding. Accordingly, lower grain size provides increase of the strength. All tested welds are resistant to IGC, evaluating by mass loss according to NAMLT test, and resistivity slightly decrease with increasing welding speed.",
journal = "Advanced Technologies and Materials",
title = "The effect of friction stirs welding speed on microstructure, mechanical properties and IGC of EN AW-5083 plates",
pages = "13-7",
number = "1",
volume = "44",
doi = "10.24867/ATM-2019-1-002"
}
Pavlović, M., Radović, L., Radisavljević, I.,& Radović, N.. (2019). The effect of friction stirs welding speed on microstructure, mechanical properties and IGC of EN AW-5083 plates. in Advanced Technologies and Materials, 44(1), 7-13.
https://doi.org/10.24867/ATM-2019-1-002
Pavlović M, Radović L, Radisavljević I, Radović N. The effect of friction stirs welding speed on microstructure, mechanical properties and IGC of EN AW-5083 plates. in Advanced Technologies and Materials. 2019;44(1):7-13.
doi:10.24867/ATM-2019-1-002 .
Pavlović, Miloš, Radović, Ljubica, Radisavljević, Igor, Radović, Nenad, "The effect of friction stirs welding speed on microstructure, mechanical properties and IGC of EN AW-5083 plates" in Advanced Technologies and Materials, 44, no. 1 (2019):7-13,
https://doi.org/10.24867/ATM-2019-1-002 . .
1

Manganese electrodeposition from urea-rich electrolyte

Vuruna, Mladen; Bucko, Mihael; Radović, Ljubica; Bajat, Jelena

(Soc Chemists Technologists Madeconia, Skopje, 2015)

TY  - JOUR
AU  - Vuruna, Mladen
AU  - Bucko, Mihael
AU  - Radović, Ljubica
AU  - Bajat, Jelena
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3088
AB  - Pure manganese coatings were prepared on the steel (AISI 4340) electrode by a non-conventional electrodeposition method, in the presence of 8 mol dm(-3) of urea as a plating additive. The influence of urea on the electrodeposition of Mn was investigated by cyclic voltammetry. The morphology of the coatings was studied by scanning electron microscopy (SEM), and their elemental composition by energy dispersive X-ray spectrometry (EDS). The results showed that the presence of urea in the solution increased the current efficiency for metal reduction for around 20%, and depending on the applied deposition potential, urea may act either as a complexing agent or through the adsorption mechanism. Moreover, urea improves the characteristics of Mn deposits, i.e. their adhesiveness, porosity, compactness, and appearance. Except for oxygen, as part of the Mn corrosion product at the coating surface, no carbon or nitrogen incorporation was detected in the deposits by EDS.
PB  - Soc Chemists Technologists Madeconia, Skopje
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - Manganese electrodeposition from urea-rich electrolyte
EP  - 285
IS  - 2
SP  - 277
VL  - 34
DO  - 10.20450/mjcce.2015.588
ER  - 
@article{
author = "Vuruna, Mladen and Bucko, Mihael and Radović, Ljubica and Bajat, Jelena",
year = "2015",
abstract = "Pure manganese coatings were prepared on the steel (AISI 4340) electrode by a non-conventional electrodeposition method, in the presence of 8 mol dm(-3) of urea as a plating additive. The influence of urea on the electrodeposition of Mn was investigated by cyclic voltammetry. The morphology of the coatings was studied by scanning electron microscopy (SEM), and their elemental composition by energy dispersive X-ray spectrometry (EDS). The results showed that the presence of urea in the solution increased the current efficiency for metal reduction for around 20%, and depending on the applied deposition potential, urea may act either as a complexing agent or through the adsorption mechanism. Moreover, urea improves the characteristics of Mn deposits, i.e. their adhesiveness, porosity, compactness, and appearance. Except for oxygen, as part of the Mn corrosion product at the coating surface, no carbon or nitrogen incorporation was detected in the deposits by EDS.",
publisher = "Soc Chemists Technologists Madeconia, Skopje",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "Manganese electrodeposition from urea-rich electrolyte",
pages = "285-277",
number = "2",
volume = "34",
doi = "10.20450/mjcce.2015.588"
}
Vuruna, M., Bucko, M., Radović, L.,& Bajat, J.. (2015). Manganese electrodeposition from urea-rich electrolyte. in Macedonian Journal of Chemistry and Chemical Engineering
Soc Chemists Technologists Madeconia, Skopje., 34(2), 277-285.
https://doi.org/10.20450/mjcce.2015.588
Vuruna M, Bucko M, Radović L, Bajat J. Manganese electrodeposition from urea-rich electrolyte. in Macedonian Journal of Chemistry and Chemical Engineering. 2015;34(2):277-285.
doi:10.20450/mjcce.2015.588 .
Vuruna, Mladen, Bucko, Mihael, Radović, Ljubica, Bajat, Jelena, "Manganese electrodeposition from urea-rich electrolyte" in Macedonian Journal of Chemistry and Chemical Engineering, 34, no. 2 (2015):277-285,
https://doi.org/10.20450/mjcce.2015.588 . .

The influence of thermomechanical treatment on recrystallization of AlMg4.5Cu0.5 alloy

Radović, Ljubica; Nikačević, M.; Popović, Miljana; Romhanji, Endre

(Savez inženjera metalurgije Srbije, Beograd, 2007)

TY  - JOUR
AU  - Radović, Ljubica
AU  - Nikačević, M.
AU  - Popović, Miljana
AU  - Romhanji, Endre
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1042
AB  - Recrystallization behavior of an Al-Mg-Cu alloy (4.5 wt. %Mg and 0.45 wt %Cu) subjected to different thermomechanical treatments (TMTs) have been studied by means of light optical microscopy and hardness measurements. In order to provide controlled precipitation of Cu-Mg intermetallic particles two-stage annealing at 565°C/6h + 450°C/4h was applied. Then the tested alloy was cold rolled with 20, 40 and 60% reductions, and finally annealed for 3h at 250, 280 and 350°C, with slow and rapid heating rate (0.6 and 25°C/min). After annealing at 250°C/3h recovered grains were dominated in the structure. New recrystallized grains were revealed only in a few grains when r=40 and 60%. At 280°C a mixture of unrecrystallized and small new recrystallized grains (dav=20μm) was observed while after annealing at 350°C with high reductions a recrystallization process was completed. These observations were in agreement with hardness measurements. The heating rate was found also affecting the homogeneity of grain size distribution.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - The influence of thermomechanical treatment on recrystallization of AlMg4.5Cu0.5 alloy
EP  - 88
IS  - 1
SP  - 83
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1042
ER  - 
@article{
author = "Radović, Ljubica and Nikačević, M. and Popović, Miljana and Romhanji, Endre",
year = "2007",
abstract = "Recrystallization behavior of an Al-Mg-Cu alloy (4.5 wt. %Mg and 0.45 wt %Cu) subjected to different thermomechanical treatments (TMTs) have been studied by means of light optical microscopy and hardness measurements. In order to provide controlled precipitation of Cu-Mg intermetallic particles two-stage annealing at 565°C/6h + 450°C/4h was applied. Then the tested alloy was cold rolled with 20, 40 and 60% reductions, and finally annealed for 3h at 250, 280 and 350°C, with slow and rapid heating rate (0.6 and 25°C/min). After annealing at 250°C/3h recovered grains were dominated in the structure. New recrystallized grains were revealed only in a few grains when r=40 and 60%. At 280°C a mixture of unrecrystallized and small new recrystallized grains (dav=20μm) was observed while after annealing at 350°C with high reductions a recrystallization process was completed. These observations were in agreement with hardness measurements. The heating rate was found also affecting the homogeneity of grain size distribution.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "The influence of thermomechanical treatment on recrystallization of AlMg4.5Cu0.5 alloy",
pages = "88-83",
number = "1",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1042"
}
Radović, L., Nikačević, M., Popović, M.,& Romhanji, E.. (2007). The influence of thermomechanical treatment on recrystallization of AlMg4.5Cu0.5 alloy. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 13(1), 83-88.
https://hdl.handle.net/21.15107/rcub_technorep_1042
Radović L, Nikačević M, Popović M, Romhanji E. The influence of thermomechanical treatment on recrystallization of AlMg4.5Cu0.5 alloy. in Metalurgija. 2007;13(1):83-88.
https://hdl.handle.net/21.15107/rcub_technorep_1042 .
Radović, Ljubica, Nikačević, M., Popović, Miljana, Romhanji, Endre, "The influence of thermomechanical treatment on recrystallization of AlMg4.5Cu0.5 alloy" in Metalurgija, 13, no. 1 (2007):83-88,
https://hdl.handle.net/21.15107/rcub_technorep_1042 .

The influence of thermomechanical treatment and chemical composition on recrystallization of Al-Mg alloys

Radović, Ljubica; Nikačević, M.; Popović, Miljana; Romhanji, Endre

(Savez inženjera metalurgije Srbije, Beograd, 2007)

TY  - JOUR
AU  - Radović, Ljubica
AU  - Nikačević, M.
AU  - Popović, Miljana
AU  - Romhanji, Endre
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1051
AB  - Recrystallization behaviour of AlMg3, AlMg4.5Mn and AlMg6Mn alloy plates subjected to different thermomechanical treatments (TMTs), has been studied by means of optical microscopy and hardness measurements. Applied two-stage annealing at 565°C/6h + 450°C/4h simulated homogenization and heterogenization processes, respectively, and was followed by cold rolling with 20, 40 and 60%. Final annealing was performed for 3h at 250, 280 and 350°C, with slow and rapid heating rates (0.6 and 25°C/min). Increase of rolling reduction and temperature, either individually or in combination, promotes recrystallization during final annealing. The recrystallization process was found non-simply related to the chemical composition, but a rather complex recrystallization behaviour of these alloys is attributed to the effect of the size and distribution of the second phase particles formed during the thermomechanical treatment. .
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - The influence of thermomechanical treatment and chemical composition on recrystallization of Al-Mg alloys
EP  - 267
IS  - 4
SP  - 259
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1051
ER  - 
@article{
author = "Radović, Ljubica and Nikačević, M. and Popović, Miljana and Romhanji, Endre",
year = "2007",
abstract = "Recrystallization behaviour of AlMg3, AlMg4.5Mn and AlMg6Mn alloy plates subjected to different thermomechanical treatments (TMTs), has been studied by means of optical microscopy and hardness measurements. Applied two-stage annealing at 565°C/6h + 450°C/4h simulated homogenization and heterogenization processes, respectively, and was followed by cold rolling with 20, 40 and 60%. Final annealing was performed for 3h at 250, 280 and 350°C, with slow and rapid heating rates (0.6 and 25°C/min). Increase of rolling reduction and temperature, either individually or in combination, promotes recrystallization during final annealing. The recrystallization process was found non-simply related to the chemical composition, but a rather complex recrystallization behaviour of these alloys is attributed to the effect of the size and distribution of the second phase particles formed during the thermomechanical treatment. .",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "The influence of thermomechanical treatment and chemical composition on recrystallization of Al-Mg alloys",
pages = "267-259",
number = "4",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1051"
}
Radović, L., Nikačević, M., Popović, M.,& Romhanji, E.. (2007). The influence of thermomechanical treatment and chemical composition on recrystallization of Al-Mg alloys. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 13(4), 259-267.
https://hdl.handle.net/21.15107/rcub_technorep_1051
Radović L, Nikačević M, Popović M, Romhanji E. The influence of thermomechanical treatment and chemical composition on recrystallization of Al-Mg alloys. in Metalurgija. 2007;13(4):259-267.
https://hdl.handle.net/21.15107/rcub_technorep_1051 .
Radović, Ljubica, Nikačević, M., Popović, Miljana, Romhanji, Endre, "The influence of thermomechanical treatment and chemical composition on recrystallization of Al-Mg alloys" in Metalurgija, 13, no. 4 (2007):259-267,
https://hdl.handle.net/21.15107/rcub_technorep_1051 .