TY  - CONF
AU  - Čukić, Bratislav
AU  - Mitrović, Nebojša S.
AU  - Labus, Nebojša
AU  - Nedeljković, Borivoje
AU  - Popović, Marko
AU  - Luković, Milentije
AU  - Stoica, Mihai
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/14206
AB  - Uzorci amorfne masivne metalne legure sastava Fe65.5Cr4Mo4Ga4P12C5B5.5 dobijeni su tehnologijom livenja rastopa u bakarne kalupe prečnika 1,5 mm i 1,8 mm. DTA analizom je utvrdjena temperatura kristalizacije TX = 810 K. S ciljem ispitivanja procesa termičkog širenja (dilatacije) sprovedeni su višestruki termički tretmani do oko 200 K iznad temperature kristalizacije. Uticaj procesa kristalizacije na termičko širenje je izučavan preko temperaturske zavisnosti koeficijenta termičkog širenja koji pokazuje evidentne promene tokom kristalizacije za razliku od skoro konstantne vrednosti kod legure u iskristalisanom stanju. Stereološkom i XRD analizom su praćene promene strukture iz amorfne u mikrokristalnu. S obzirom na sastav legure kojim se težilo poboljšanju mehaničkih svojstava sprovedena su kontrolna merenja tvrdoće koja su pokazala povećanje HV1 sa vrednosti od oko 713 u amorfnom stanju do preko 876 u mikrokristalnom stanju
AB  - Bulk metallic glass with nominal composition Fe65.5Cr4Mo4Ga4P12C5B5.5 was prepared by cooper mold casting with 1.5 mm and 1.8 mm diameter cylinders. Crystallization temperature TX= 810 K was observed by DTA analysis. Repeated thermal treatments were performed to about 200 K over the crystallization temperature in order to investigate thermal dilatation effects. Structural changes were examined by optical microscopy and XRD analysis. Intensive changes of thermal dilatation coefficient was observed during crystallization process of amorphous structure. However, during the second heating run already crystalline structure exhibit almost constant value of thermal dilatation coefficient. Hardness test shows the increase of HV1 value from about 713 for as-cast samples to about 876 in microcrystalline state.
PB  - Београд : ЕТРАН
C3  - Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.
T1  - Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB
T1  - Correlation of crystallization process and thermal dilatation behavior in FeCrMoGaPCB bulk metallic glass
SP  - NM1.4.1-6
UR  - https://hdl.handle.net/21.15107/rcub_dais_14206
ER  - 

@conference{
author = "Čukić, Bratislav and Mitrović, Nebojša S. and Labus, Nebojša and Nedeljković, Borivoje and Popović, Marko and Luković, Milentije and Stoica, Mihai",
year = "2014",
abstract = "Uzorci amorfne masivne metalne legure sastava Fe65.5Cr4Mo4Ga4P12C5B5.5 dobijeni su tehnologijom livenja rastopa u bakarne kalupe prečnika 1,5 mm i 1,8 mm. DTA analizom je utvrdjena temperatura kristalizacije TX = 810 K. S ciljem ispitivanja procesa termičkog širenja (dilatacije) sprovedeni su višestruki termički tretmani do oko 200 K iznad temperature kristalizacije. Uticaj procesa kristalizacije na termičko širenje je izučavan preko temperaturske zavisnosti koeficijenta termičkog širenja koji pokazuje evidentne promene tokom kristalizacije za razliku od skoro konstantne vrednosti kod legure u iskristalisanom stanju. Stereološkom i XRD analizom su praćene promene strukture iz amorfne u mikrokristalnu. S obzirom na sastav legure kojim se težilo poboljšanju mehaničkih svojstava sprovedena su kontrolna merenja tvrdoće koja su pokazala povećanje HV1 sa vrednosti od oko 713 u amorfnom stanju do preko 876 u mikrokristalnom stanju, Bulk metallic glass with nominal composition Fe65.5Cr4Mo4Ga4P12C5B5.5 was prepared by cooper mold casting with 1.5 mm and 1.8 mm diameter cylinders. Crystallization temperature TX= 810 K was observed by DTA analysis. Repeated thermal treatments were performed to about 200 K over the crystallization temperature in order to investigate thermal dilatation effects. Structural changes were examined by optical microscopy and XRD analysis. Intensive changes of thermal dilatation coefficient was observed during crystallization process of amorphous structure. However, during the second heating run already crystalline structure exhibit almost constant value of thermal dilatation coefficient. Hardness test shows the increase of HV1 value from about 713 for as-cast samples to about 876 in microcrystalline state.",
publisher = "Београд : ЕТРАН",
journal = "Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.",
title = "Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB, Correlation of crystallization process and thermal dilatation behavior in FeCrMoGaPCB bulk metallic glass",
pages = "NM1.4.1-6",
url = "https://hdl.handle.net/21.15107/rcub_dais_14206"
}

Čukić, B., Mitrović, N. S., Labus, N., Nedeljković, B., Popović, M., Luković, M.,& Stoica, M.. (2014). Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB. in Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.
Београд : ЕТРАН., NM1.4.1-6.
https://hdl.handle.net/21.15107/rcub_dais_14206

Čukić B, Mitrović NS, Labus N, Nedeljković B, Popović M, Luković M, Stoica M. Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB. in Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014.. 2014;:NM1.4.1-6.
https://hdl.handle.net/21.15107/rcub_dais_14206 .

Čukić, Bratislav, Mitrović, Nebojša S., Labus, Nebojša, Nedeljković, Borivoje, Popović, Marko, Luković, Milentije, Stoica, Mihai, "Korelacija procesa kristalizacije i termičkog širenja amorfne masivne metalne legure FeCrMoGaPCB" in Зборник радова 58. конференције за електронику, телекомуникације, рачунарство, аутоматику и нуклеарну технику ЕТРАН 2014, Врњачка Бања, 2-5. јуна 2014. (2014):NM1.4.1-6,
https://hdl.handle.net/21.15107/rcub_dais_14206 .

TY  - CONF
AU  - Mitrović, Nebojša
AU  - Čukić, B.
AU  - Obradović, Nina
AU  - Kićanović, M.
AU  - Stoica, M.
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/452
AB  - Iron based alloys are the family of bulk metallic glasses (BMG) with a very high melting temperature (Tm) and highest critical cooling rates (Rc~103K/s) necessary to suppress nucleation of crystals during the casting process. Consequently, this class of BMG is the most difficult for preparation in a thick form. The rods of Fe-based bulk metallic glasses with the nominal composition Fe65.5Cr4Mo4Ga4P12C5B5.5 were cast by melt injection into a 1.5 and 1.8 mm diameter copper molds. DTA thermogram shows wide supercooled liquid region between crystallization temperature (Tx) and glass transition temperature (Tg) in the as-cast state Δ Tx = Tx - Tg = 57 K. The thermal stability and crystallization processes were investigated by non-isothermal differential thermal analysis (DTA) and X-ray diffraction (XRD). Thermal stability was discussed in terms of the width of supercooled liquid region ΔTx. Calculation of kinetic parameters of crystallization process was preformed by nonisothermal measurements results using Kissinger method.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
T1  - Kinetics of crystallization process of bulk metallic glass FeCrMoGaPCB prepared by cooper mold casting
SP  - 81
EP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_dais_452
ER  - 

@conference{
author = "Mitrović, Nebojša and Čukić, B. and Obradović, Nina and Kićanović, M. and Stoica, M.",
year = "2012",
abstract = "Iron based alloys are the family of bulk metallic glasses (BMG) with a very high melting temperature (Tm) and highest critical cooling rates (Rc~103K/s) necessary to suppress nucleation of crystals during the casting process. Consequently, this class of BMG is the most difficult for preparation in a thick form. The rods of Fe-based bulk metallic glasses with the nominal composition Fe65.5Cr4Mo4Ga4P12C5B5.5 were cast by melt injection into a 1.5 and 1.8 mm diameter copper molds. DTA thermogram shows wide supercooled liquid region between crystallization temperature (Tx) and glass transition temperature (Tg) in the as-cast state Δ Tx = Tx - Tg = 57 K. The thermal stability and crystallization processes were investigated by non-isothermal differential thermal analysis (DTA) and X-ray diffraction (XRD). Thermal stability was discussed in terms of the width of supercooled liquid region ΔTx. Calculation of kinetic parameters of crystallization process was preformed by nonisothermal measurements results using Kissinger method.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts",
title = "Kinetics of crystallization process of bulk metallic glass FeCrMoGaPCB prepared by cooper mold casting",
pages = "81-81",
url = "https://hdl.handle.net/21.15107/rcub_dais_452"
}

Mitrović, N., Čukić, B., Obradović, N., Kićanović, M.,& Stoica, M.. (2012). Kinetics of crystallization process of bulk metallic glass FeCrMoGaPCB prepared by cooper mold casting. in The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 81-81.
https://hdl.handle.net/21.15107/rcub_dais_452

Mitrović N, Čukić B, Obradović N, Kićanović M, Stoica M. Kinetics of crystallization process of bulk metallic glass FeCrMoGaPCB prepared by cooper mold casting. in The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts. 2012;:81-81.
https://hdl.handle.net/21.15107/rcub_dais_452 .

Mitrović, Nebojša, Čukić, B., Obradović, Nina, Kićanović, M., Stoica, M., "Kinetics of crystallization process of bulk metallic glass FeCrMoGaPCB prepared by cooper mold casting" in The Fourteenth Annual Conference YUCOMAT 2012: Programme and the Book of Abstracts (2012):81-81,
https://hdl.handle.net/21.15107/rcub_dais_452 .