TY  - JOUR
AU  - Ilic, N.
AU  - Jovanovic, M. T.
AU  - Radmilović, Velimir R.
AU  - Drobnjak, D.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5020
AB  - The manifestations of dynamic strain ageing in a commercial 2090 Al - Li alloy were investigated in a wide range of temperatures (-40 to 100 degrees C) and strain rates (4.16x10(-5) to 4.16x10(-3) s(-1) ). Serrated yielding, as a macroscopic manifestation of dynamic strain ageing, occurs under all testing conditions. Negative strain-rate sensitivity of the flow stress is also observed. Temperature rise and strain rate reduction cause the increase of the yield strength and the work-hardening rate, as well as the decrease of elongation - the behavior being typical for the range in which C-type serrations appear. These phenomena are related to the dislocation substructure, in which features characteristic for solute atoms blocking of dislocations and Orowan bypassing are observed.
T2  - International Journal of Materials Research
T1  - Manifestations of dynamic strain ageing in 2090 Al-Li alloy
EP  - 1390
IS  - 12
SP  - 1386
VL  - 96
DO  - 10.3139/ijmr-2005-0239
ER  - 

@article{
author = "Ilic, N. and Jovanovic, M. T. and Radmilović, Velimir R. and Drobnjak, D.",
year = "2022",
abstract = "The manifestations of dynamic strain ageing in a commercial 2090 Al - Li alloy were investigated in a wide range of temperatures (-40 to 100 degrees C) and strain rates (4.16x10(-5) to 4.16x10(-3) s(-1) ). Serrated yielding, as a macroscopic manifestation of dynamic strain ageing, occurs under all testing conditions. Negative strain-rate sensitivity of the flow stress is also observed. Temperature rise and strain rate reduction cause the increase of the yield strength and the work-hardening rate, as well as the decrease of elongation - the behavior being typical for the range in which C-type serrations appear. These phenomena are related to the dislocation substructure, in which features characteristic for solute atoms blocking of dislocations and Orowan bypassing are observed.",
journal = "International Journal of Materials Research",
title = "Manifestations of dynamic strain ageing in 2090 Al-Li alloy",
pages = "1390-1386",
number = "12",
volume = "96",
doi = "10.3139/ijmr-2005-0239"
}

Ilic, N., Jovanovic, M. T., Radmilović, V. R.,& Drobnjak, D.. (2022). Manifestations of dynamic strain ageing in 2090 Al-Li alloy. in International Journal of Materials Research, 96(12), 1386-1390.
https://doi.org/10.3139/ijmr-2005-0239

Ilic N, Jovanovic MT, Radmilović VR, Drobnjak D. Manifestations of dynamic strain ageing in 2090 Al-Li alloy. in International Journal of Materials Research. 2022;96(12):1386-1390.
doi:10.3139/ijmr-2005-0239 .

Ilic, N., Jovanovic, M. T., Radmilović, Velimir R., Drobnjak, D., "Manifestations of dynamic strain ageing in 2090 Al-Li alloy" in International Journal of Materials Research, 96, no. 12 (2022):1386-1390,
https://doi.org/10.3139/ijmr-2005-0239 . .

TY  - JOUR
AU  - Cancarevic, M.
AU  - Jovanovic, M. T.
AU  - Romhanji, Endre
AU  - Zec, S.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4955
AB  - Light and scanning electron microscopy (SEM), X-ray diffraction analysis, hardness and uniaxial tensile tests have been applied to study the mechanism and kinetics of aging of the Cu-5 wt.% Ni-2.5 wt.% Ti alloy under the influence of static and dynamic conditions. Hardening of alloy during aging is a consequence of precipitation of (Ni, Cu)(3)Ti secondary particles with the hcp crystal structure, i. e., the same as the eta phase (Ni3Ti). During static (SSA) and dynamic strain aging (DSA), the strength of the alloy is increased compared to quench aging (QA). This effect is most pronounced during the dynamic process. The total concentration of vacancies participating in the process of DSA is increased compared to the vacancy concentration during SSA and QA. This may be explained by the fact that vacancies are not annihilated at dislocations, but their concentration is preserved through the vacancy - precipitate reaction.
T2  - International Journal of Materials Research
T1  - Mechanism and kinetics of aging of high-strength Cu-5 wt.% Ni-2.5 wt.% Ti
EP  - 82
IS  - 1
SP  - 78
VL  - 96
DO  - 10.3139/ijmr-2005-0011
ER  - 

@article{
author = "Cancarevic, M. and Jovanovic, M. T. and Romhanji, Endre and Zec, S.",
year = "2021",
abstract = "Light and scanning electron microscopy (SEM), X-ray diffraction analysis, hardness and uniaxial tensile tests have been applied to study the mechanism and kinetics of aging of the Cu-5 wt.% Ni-2.5 wt.% Ti alloy under the influence of static and dynamic conditions. Hardening of alloy during aging is a consequence of precipitation of (Ni, Cu)(3)Ti secondary particles with the hcp crystal structure, i. e., the same as the eta phase (Ni3Ti). During static (SSA) and dynamic strain aging (DSA), the strength of the alloy is increased compared to quench aging (QA). This effect is most pronounced during the dynamic process. The total concentration of vacancies participating in the process of DSA is increased compared to the vacancy concentration during SSA and QA. This may be explained by the fact that vacancies are not annihilated at dislocations, but their concentration is preserved through the vacancy - precipitate reaction.",
journal = "International Journal of Materials Research",
title = "Mechanism and kinetics of aging of high-strength Cu-5 wt.% Ni-2.5 wt.% Ti",
pages = "82-78",
number = "1",
volume = "96",
doi = "10.3139/ijmr-2005-0011"
}

Cancarevic, M., Jovanovic, M. T., Romhanji, E.,& Zec, S.. (2021). Mechanism and kinetics of aging of high-strength Cu-5 wt.% Ni-2.5 wt.% Ti. in International Journal of Materials Research, 96(1), 78-82.
https://doi.org/10.3139/ijmr-2005-0011

Cancarevic M, Jovanovic MT, Romhanji E, Zec S. Mechanism and kinetics of aging of high-strength Cu-5 wt.% Ni-2.5 wt.% Ti. in International Journal of Materials Research. 2021;96(1):78-82.
doi:10.3139/ijmr-2005-0011 .

Cancarevic, M., Jovanovic, M. T., Romhanji, Endre, Zec, S., "Mechanism and kinetics of aging of high-strength Cu-5 wt.% Ni-2.5 wt.% Ti" in International Journal of Materials Research, 96, no. 1 (2021):78-82,
https://doi.org/10.3139/ijmr-2005-0011 . .