TY  - JOUR
AU  - Janjatović, Petar
AU  - Erić-Cekić, Olivera
AU  - Siđanin, Leposava
AU  - Balos, Sebastian
AU  - Dramićanin, Miroslav R.
AU  - Grbović-Novaković, Jasmina
AU  - Rajnović, Dragan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9179
AB  - Austempered ductile iron (ADI) is an advanced cast iron material that has a broad field of application and, among others, it is used in contact and for conveyance of fluids. However, it is noticed that in contact with some fluids, especially water, ADI material becomes brittle. The most significant decrease is established for the elongation. However, the influence of water and the cause of this phenomenon is still not fully understood. For that reason, in this paper, the influence of different water concentrations in ethyl alcohol on the mechanical properties of ADI materials was studied. The test was performed on two different types of ADI materials in 0.2, 4, 10, and 100 vol.% water concentration environments, and in dry condition. It was found that even the smallest concentration of water (0.2 vol.%) causes formation of the embrittled zone at fracture surface. However, not all mechanical properties were affected equally and not all water concentrations have been critical. The highest deterioration was established in the elongation, followed by the ultimate tensile strength, while the proof strength was affected least.
T2  - Metals
T1  - The Effect of Water Concentration in Ethyl Alcohol on the Environmentally Assisted Embrittlement of Austempered Ductile Irons
VL  - 11
IS  - 1
SP  - 94
DO  - 10.3390/met11010094
ER  - 

@article{
author = "Janjatović, Petar and Erić-Cekić, Olivera and Siđanin, Leposava and Balos, Sebastian and Dramićanin, Miroslav R. and Grbović-Novaković, Jasmina and Rajnović, Dragan",
year = "2021",
abstract = "Austempered ductile iron (ADI) is an advanced cast iron material that has a broad field of application and, among others, it is used in contact and for conveyance of fluids. However, it is noticed that in contact with some fluids, especially water, ADI material becomes brittle. The most significant decrease is established for the elongation. However, the influence of water and the cause of this phenomenon is still not fully understood. For that reason, in this paper, the influence of different water concentrations in ethyl alcohol on the mechanical properties of ADI materials was studied. The test was performed on two different types of ADI materials in 0.2, 4, 10, and 100 vol.% water concentration environments, and in dry condition. It was found that even the smallest concentration of water (0.2 vol.%) causes formation of the embrittled zone at fracture surface. However, not all mechanical properties were affected equally and not all water concentrations have been critical. The highest deterioration was established in the elongation, followed by the ultimate tensile strength, while the proof strength was affected least.",
journal = "Metals",
title = "The Effect of Water Concentration in Ethyl Alcohol on the Environmentally Assisted Embrittlement of Austempered Ductile Irons",
volume = "11",
number = "1",
pages = "94",
doi = "10.3390/met11010094"
}

Janjatović, P., Erić-Cekić, O., Siđanin, L., Balos, S., Dramićanin, M. R., Grbović-Novaković, J.,& Rajnović, D.. (2021). The Effect of Water Concentration in Ethyl Alcohol on the Environmentally Assisted Embrittlement of Austempered Ductile Irons. in Metals, 11(1), 94.
https://doi.org/10.3390/met11010094

Janjatović P, Erić-Cekić O, Siđanin L, Balos S, Dramićanin MR, Grbović-Novaković J, Rajnović D. The Effect of Water Concentration in Ethyl Alcohol on the Environmentally Assisted Embrittlement of Austempered Ductile Irons. in Metals. 2021;11(1):94.
doi:10.3390/met11010094 .

Janjatović, Petar, Erić-Cekić, Olivera, Siđanin, Leposava, Balos, Sebastian, Dramićanin, Miroslav R., Grbović-Novaković, Jasmina, Rajnović, Dragan, "The Effect of Water Concentration in Ethyl Alcohol on the Environmentally Assisted Embrittlement of Austempered Ductile Irons" in Metals, 11, no. 1 (2021):94,
https://doi.org/10.3390/met11010094 . .

TY  - JOUR
AU  - Petronić, Sanja Z.
AU  - Birdeanu, Aurel Valentin
AU  - Jovičić, Radomir D.
AU  - Čolić, Katarina
AU  - Vašalić, Dragan
AU  - Erić-Cekić, Olivera
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7846
AB  - The Pressure Equipment Directive (PED) and Regulations on Technical Requirements for Designing, Manufacturing and Conformity Assessment of Pressure Equipment bring a number of changes to the design of pressure equipment in relation to the Technical Regulations for Stable Pressure Vessels, 1983. Among the most important changes are the essential safety requirements for pressure equipment. The changes in the formula, for all materials, for calculating the allowable stresses, as well as the change in the value of the test pressure, the new Regulations use the 1.0% proof strength as the relevant value for calculating the permissible membrane stress and thickness of pressure equipment walls. In this paper, the differences in the allowable stresses, the required wall thicknesses, and the approximate savings in the material in the case of a milk reservoir, calculated according to the requirements of the Directive and the new Regulations on one hand, and the old Regulations on the other, are presented. © 2018 The Author.
T2  - Structural Integrity and Life
T1  - Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment
VL  - 18
IS  - 1
SP  - 45
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7846
ER  - 

@article{
author = "Petronić, Sanja Z. and Birdeanu, Aurel Valentin and Jovičić, Radomir D. and Čolić, Katarina and Vašalić, Dragan and Erić-Cekić, Olivera",
year = "2018",
abstract = "The Pressure Equipment Directive (PED) and Regulations on Technical Requirements for Designing, Manufacturing and Conformity Assessment of Pressure Equipment bring a number of changes to the design of pressure equipment in relation to the Technical Regulations for Stable Pressure Vessels, 1983. Among the most important changes are the essential safety requirements for pressure equipment. The changes in the formula, for all materials, for calculating the allowable stresses, as well as the change in the value of the test pressure, the new Regulations use the 1.0% proof strength as the relevant value for calculating the permissible membrane stress and thickness of pressure equipment walls. In this paper, the differences in the allowable stresses, the required wall thicknesses, and the approximate savings in the material in the case of a milk reservoir, calculated according to the requirements of the Directive and the new Regulations on one hand, and the old Regulations on the other, are presented. © 2018 The Author.",
journal = "Structural Integrity and Life",
title = "Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment",
volume = "18",
number = "1",
pages = "45-51",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7846"
}

Petronić, S. Z., Birdeanu, A. V., Jovičić, R. D., Čolić, K., Vašalić, D.,& Erić-Cekić, O.. (2018). Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment. in Structural Integrity and Life, 18(1), 45-51.
https://hdl.handle.net/21.15107/rcub_vinar_7846

Petronić SZ, Birdeanu AV, Jovičić RD, Čolić K, Vašalić D, Erić-Cekić O. Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment. in Structural Integrity and Life. 2018;18(1):45-51.
https://hdl.handle.net/21.15107/rcub_vinar_7846 .

Petronić, Sanja Z., Birdeanu, Aurel Valentin, Jovičić, Radomir D., Čolić, Katarina, Vašalić, Dragan, Erić-Cekić, Olivera, "Impact of austenitic steels’ mechanical properties on allowed stress and wall thickness of pressure equipment" in Structural Integrity and Life, 18, no. 1 (2018):45-51,
https://hdl.handle.net/21.15107/rcub_vinar_7846 .

TY  - JOUR
AU  - Balos, Sebastian
AU  - Rajnović, Dragan
AU  - Dramićanin, Miroslav
AU  - Labus, Danka
AU  - Erić-Cekić, Olivera
AU  - Grbović-Novaković, Jasmina
AU  - Siđanin, Leposava
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1128
AB  - In this paper, the wear rate of ferritic and pearlitic ductile iron, as well as three types of austempered ductile iron (ADI materials), austempered at 300, 350 and 400 degrees C is investigated. Two wear parameters were varied, wear load (0.5, 1.3, 2 kg) and grit paper abrasive grain size (P240, P500, P800). The hardness of ductile iron and stress-assisted phase transformation of retained austenite into martensite (SATRAM) phenomenon in ADI materials were found to play major roles in wear behaviour. The pronounced SATRAM phenomenon was detected for the most severe wear parameters. Another important factor in the occurrence of SATRAM phenomenon is the presence of metastable, low carbon-enriched retained austenite. As a consequence, the wear rate of ADI austempered at 400 degrees C is nearly equivalent to ADI austempered at 300 degrees C at medium and high loading with the coarsest abrasive paper grit tested (P240).
T2  - International Journal of Cast Metals Research
T1  - Abrasive wear behaviour of ADI material with various retained austenite content
VL  - 29
IS  - 4
SP  - 187
EP  - 193
DO  - 10.1080/13640461.2015.1125982
ER  - 

@article{
author = "Balos, Sebastian and Rajnović, Dragan and Dramićanin, Miroslav and Labus, Danka and Erić-Cekić, Olivera and Grbović-Novaković, Jasmina and Siđanin, Leposava",
year = "2016",
abstract = "In this paper, the wear rate of ferritic and pearlitic ductile iron, as well as three types of austempered ductile iron (ADI materials), austempered at 300, 350 and 400 degrees C is investigated. Two wear parameters were varied, wear load (0.5, 1.3, 2 kg) and grit paper abrasive grain size (P240, P500, P800). The hardness of ductile iron and stress-assisted phase transformation of retained austenite into martensite (SATRAM) phenomenon in ADI materials were found to play major roles in wear behaviour. The pronounced SATRAM phenomenon was detected for the most severe wear parameters. Another important factor in the occurrence of SATRAM phenomenon is the presence of metastable, low carbon-enriched retained austenite. As a consequence, the wear rate of ADI austempered at 400 degrees C is nearly equivalent to ADI austempered at 300 degrees C at medium and high loading with the coarsest abrasive paper grit tested (P240).",
journal = "International Journal of Cast Metals Research",
title = "Abrasive wear behaviour of ADI material with various retained austenite content",
volume = "29",
number = "4",
pages = "187-193",
doi = "10.1080/13640461.2015.1125982"
}

Balos, S., Rajnović, D., Dramićanin, M., Labus, D., Erić-Cekić, O., Grbović-Novaković, J.,& Siđanin, L.. (2016). Abrasive wear behaviour of ADI material with various retained austenite content. in International Journal of Cast Metals Research, 29(4), 187-193.
https://doi.org/10.1080/13640461.2015.1125982

Balos S, Rajnović D, Dramićanin M, Labus D, Erić-Cekić O, Grbović-Novaković J, Siđanin L. Abrasive wear behaviour of ADI material with various retained austenite content. in International Journal of Cast Metals Research. 2016;29(4):187-193.
doi:10.1080/13640461.2015.1125982 .

Balos, Sebastian, Rajnović, Dragan, Dramićanin, Miroslav, Labus, Danka, Erić-Cekić, Olivera, Grbović-Novaković, Jasmina, Siđanin, Leposava, "Abrasive wear behaviour of ADI material with various retained austenite content" in International Journal of Cast Metals Research, 29, no. 4 (2016):187-193,
https://doi.org/10.1080/13640461.2015.1125982 . .