TY  - JOUR
AU  - Petronić, Sanja
AU  - Milovanović, Dubravka
AU  - Milosavljević, Anđelka
AU  - Radovanović, Željko
AU  - Cekić-Erić, Olivera
AU  - Jovičić, Radomir
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4279
AB  - In this paper, the influence of parameters of laser processing (drilling, cutting, welding and laser shock peening) on microstructure of superalloy Nimonic 263 are investigated. Drilling and welding process are carried out on the Nd: YAG laser model LS-HTS Mobile P160. When drilling the holes, the parameters of pulse frequency (5 Hz, 7 Hz and 9 Hz) and the pulses duration (1.8 ms to 3.6 ms) are varied. The microstructure is investigated and geometrical and metallurgical characteristics of the holes are determined.Cutting is carried out on the laser BISTRONIC, (2000), BISTAR 3015. The parameters that were varied are as follows: the average laser power, laser velocity, the pressure of the assisting gas and the focus position. Based on the geometrical characteristics of the cuts and surface morphology the optimal parameters are discussed and defined. The laser welded joints of Nimonic 263, in addition to microscopic examination and surface profilometry, were subjected to the destructive testing. During the laser shock peening, the samples were exposed to laser light at a wavelength of 1064 nm and 532 nm, with the number of accumulated pulses 50, 100 and 200. The operating laser was Nd: YAG EKSPLO, SL212P model. Structural analysis of Nimonic 263 was carried out using light microscopy, scanning electron microscopy and EDS analysis. Microhardness measurements were carried out using the Vickers method under load of 9,81N. Profilometry was performed on a contactless profilometer Zygo Newview 7100.
AB  - U ovom radu, proučavan je uticaj parametara određenih procesa laserske tehnike obrade materijala superlegure Nimonic 263 - bušenje, rezanje, zavarivanje i mehanička obrada laserom. Bušenje i zavarivanje su vršeni na laseru Nd:YAG laserom model HTS Mobile LS-P160. Prilikom bušenja rupa varirani su parametri frekvencije impulsa (5 Hz, 7Hz i 9 Hz) i dužine trajanja impulsa (1,8 ms do 3,6 ms). Ispitivana je mikrostruktura i određene su geometrijske i metalurške karakteristike rupa dobijenih ovim parametrima, na osnovu čega je izvršena optimizacija parametara obrade. Rezanje je izvedeno na laseru tipa Bistronic laser, (2000), BISTAR 3015. Varirani su parametri srednje snage lasera, brzina lasera, pritisak gasa i položaj fokusa. Na osnovu dobijenih geometrijskih karakteristika rezova i površinske morfologije diskutovani su i određeni optimalni parametri. Laserom zavareni spojevi limova legure Nimonik 263 su, osim mikroskopskih i profilometrijskih ispitivanja površina, ispitivani i metodom sa razaranjem. Prilikom laserskog deformacionog ojačavanja uzorci su bili izloženi laserskom svetlu na talasnoj dužini od 1064 nm i 532 nm, sa brojem akumuliranih impulsa: 50, 100 i 200. U svim delovima eksperimenta strukturna analiza superlegure Nimonic 263 izvedena je pomoću svetlosne mikroskopije (SM), skenirajuće elektronske mikroskopije (SEM) i EDS-analize. Merenja mikrotvrdoće vršena su pomoću metode Vikersa pod opterećenjem od 9,81N. Profilometrija je izvedena na beskontaktnom profilometru Zygo NewView 7100.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Laser treatments of Nimonic 263 nickel-based superalloy
T1  - Laserske obrade superlegure Nimonik 263
EP  - 43
IS  - 1
SP  - 26
VL  - 60
DO  - 10.5937/zasmat1901026P
ER  - 

@article{
author = "Petronić, Sanja and Milovanović, Dubravka and Milosavljević, Anđelka and Radovanović, Željko and Cekić-Erić, Olivera and Jovičić, Radomir",
year = "2019",
abstract = "In this paper, the influence of parameters of laser processing (drilling, cutting, welding and laser shock peening) on microstructure of superalloy Nimonic 263 are investigated. Drilling and welding process are carried out on the Nd: YAG laser model LS-HTS Mobile P160. When drilling the holes, the parameters of pulse frequency (5 Hz, 7 Hz and 9 Hz) and the pulses duration (1.8 ms to 3.6 ms) are varied. The microstructure is investigated and geometrical and metallurgical characteristics of the holes are determined.Cutting is carried out on the laser BISTRONIC, (2000), BISTAR 3015. The parameters that were varied are as follows: the average laser power, laser velocity, the pressure of the assisting gas and the focus position. Based on the geometrical characteristics of the cuts and surface morphology the optimal parameters are discussed and defined. The laser welded joints of Nimonic 263, in addition to microscopic examination and surface profilometry, were subjected to the destructive testing. During the laser shock peening, the samples were exposed to laser light at a wavelength of 1064 nm and 532 nm, with the number of accumulated pulses 50, 100 and 200. The operating laser was Nd: YAG EKSPLO, SL212P model. Structural analysis of Nimonic 263 was carried out using light microscopy, scanning electron microscopy and EDS analysis. Microhardness measurements were carried out using the Vickers method under load of 9,81N. Profilometry was performed on a contactless profilometer Zygo Newview 7100., U ovom radu, proučavan je uticaj parametara određenih procesa laserske tehnike obrade materijala superlegure Nimonic 263 - bušenje, rezanje, zavarivanje i mehanička obrada laserom. Bušenje i zavarivanje su vršeni na laseru Nd:YAG laserom model HTS Mobile LS-P160. Prilikom bušenja rupa varirani su parametri frekvencije impulsa (5 Hz, 7Hz i 9 Hz) i dužine trajanja impulsa (1,8 ms do 3,6 ms). Ispitivana je mikrostruktura i određene su geometrijske i metalurške karakteristike rupa dobijenih ovim parametrima, na osnovu čega je izvršena optimizacija parametara obrade. Rezanje je izvedeno na laseru tipa Bistronic laser, (2000), BISTAR 3015. Varirani su parametri srednje snage lasera, brzina lasera, pritisak gasa i položaj fokusa. Na osnovu dobijenih geometrijskih karakteristika rezova i površinske morfologije diskutovani su i određeni optimalni parametri. Laserom zavareni spojevi limova legure Nimonik 263 su, osim mikroskopskih i profilometrijskih ispitivanja površina, ispitivani i metodom sa razaranjem. Prilikom laserskog deformacionog ojačavanja uzorci su bili izloženi laserskom svetlu na talasnoj dužini od 1064 nm i 532 nm, sa brojem akumuliranih impulsa: 50, 100 i 200. U svim delovima eksperimenta strukturna analiza superlegure Nimonic 263 izvedena je pomoću svetlosne mikroskopije (SM), skenirajuće elektronske mikroskopije (SEM) i EDS-analize. Merenja mikrotvrdoće vršena su pomoću metode Vikersa pod opterećenjem od 9,81N. Profilometrija je izvedena na beskontaktnom profilometru Zygo NewView 7100.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Laser treatments of Nimonic 263 nickel-based superalloy, Laserske obrade superlegure Nimonik 263",
pages = "43-26",
number = "1",
volume = "60",
doi = "10.5937/zasmat1901026P"
}

Petronić, S., Milovanović, D., Milosavljević, A., Radovanović, Ž., Cekić-Erić, O.,& Jovičić, R.. (2019). Laser treatments of Nimonic 263 nickel-based superalloy. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 60(1), 26-43.
https://doi.org/10.5937/zasmat1901026P

Petronić S, Milovanović D, Milosavljević A, Radovanović Ž, Cekić-Erić O, Jovičić R. Laser treatments of Nimonic 263 nickel-based superalloy. in Zaštita materijala. 2019;60(1):26-43.
doi:10.5937/zasmat1901026P .

Petronić, Sanja, Milovanović, Dubravka, Milosavljević, Anđelka, Radovanović, Željko, Cekić-Erić, Olivera, Jovičić, Radomir, "Laser treatments of Nimonic 263 nickel-based superalloy" in Zaštita materijala, 60, no. 1 (2019):26-43,
https://doi.org/10.5937/zasmat1901026P . .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Milosavljević, Anđelka
AU  - Milovanović, Dubravka
AU  - Momčilović, Miloš
AU  - Radovanović, Željko
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1886
AB  - We investigate samples of austenitic materials - stainless steel and iron-based superalloy - which are widely used at high temperatures and pressures. The samples were exposed to Nd(3+):YAG laser pulses with a wavelength of 1064 nm and a pulse duration of 170 ps. We employ different pulse energies and number of pulses. The spots appearing after the laser irradiation were examined by optical and scanning electron microscopy and analyzed by energy-dispersive spectroscopy. We also perform Vickers microhardness tests. We discuss the microstructure changes caused by different energy and number of pulses in air and in a He-enriched atmosphere with the aim to determine optimum laser parameters in surface-treatment technology.
PB  - Springer, New York
T2  - Journal of Russian Laser Research
T1  - Influence of picosecond laser pulses on the microstructure of austenitic materials
EP  - 571
IS  - 6
SP  - 564
VL  - 32
DO  - 10.1007/s10946-011-9247-6
ER  - 

@article{
author = "Petronić, Sanja Z. and Milosavljević, Anđelka and Milovanović, Dubravka and Momčilović, Miloš and Radovanović, Željko",
year = "2011",
abstract = "We investigate samples of austenitic materials - stainless steel and iron-based superalloy - which are widely used at high temperatures and pressures. The samples were exposed to Nd(3+):YAG laser pulses with a wavelength of 1064 nm and a pulse duration of 170 ps. We employ different pulse energies and number of pulses. The spots appearing after the laser irradiation were examined by optical and scanning electron microscopy and analyzed by energy-dispersive spectroscopy. We also perform Vickers microhardness tests. We discuss the microstructure changes caused by different energy and number of pulses in air and in a He-enriched atmosphere with the aim to determine optimum laser parameters in surface-treatment technology.",
publisher = "Springer, New York",
journal = "Journal of Russian Laser Research",
title = "Influence of picosecond laser pulses on the microstructure of austenitic materials",
pages = "571-564",
number = "6",
volume = "32",
doi = "10.1007/s10946-011-9247-6"
}

Petronić, S. Z., Milosavljević, A., Milovanović, D., Momčilović, M.,& Radovanović, Ž.. (2011). Influence of picosecond laser pulses on the microstructure of austenitic materials. in Journal of Russian Laser Research
Springer, New York., 32(6), 564-571.
https://doi.org/10.1007/s10946-011-9247-6

Petronić SZ, Milosavljević A, Milovanović D, Momčilović M, Radovanović Ž. Influence of picosecond laser pulses on the microstructure of austenitic materials. in Journal of Russian Laser Research. 2011;32(6):564-571.
doi:10.1007/s10946-011-9247-6 .

Petronić, Sanja Z., Milosavljević, Anđelka, Milovanović, Dubravka, Momčilović, Miloš, Radovanović, Željko, "Influence of picosecond laser pulses on the microstructure of austenitic materials" in Journal of Russian Laser Research, 32, no. 6 (2011):564-571,
https://doi.org/10.1007/s10946-011-9247-6 . .