Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel
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1997
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The effect of test variables on the apparent activation energy for hot working of a medium carbon V-microalloyed steel, Q(HW), and the critical recrystallization temperature, T-nr, have been studied by means of isothermal continuous and anisothermal multipass torsion test. The Q(HW) is found to be temperature dependent. Above the T-nr, the Q(HW)(U) is close to that of austenite self diffusion, Q(SD), irrespective of the type of test or test variables. Below the T-nr, the Q(HW)(L) is not only considerably higher, but that based on multipass flow curve exibits a strong interpass time dependence. With increasing interpass time from 1.8 to 10 s the Q(HW)(L) and the T-nr increase and decrease respectively. The former is assumed to be controlled by solute drag, while the latter both by solute drag and precipitation pinning. Beyond 10 s, the two parameters exhibit the same trend, and the precipitation pinning is assumed to be the only recrystallization inhibiting mechanism.
Izvor:
Steel Research, 1997, 68, 7, 306-312Izdavač:
- Verlag Stahleisen Mbh, Dusseldorf
DOI: 10.1002/srin.199701794
ISSN: 0177-4832
WoS: A1997XL92100004
Scopus: 2-s2.0-0031186139
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Drobnjak, Đorđe AU - Radović, Nenad AU - Andjeli, M AU - Koprivica, Ankica PY - 1997 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/134 AB - The effect of test variables on the apparent activation energy for hot working of a medium carbon V-microalloyed steel, Q(HW), and the critical recrystallization temperature, T-nr, have been studied by means of isothermal continuous and anisothermal multipass torsion test. The Q(HW) is found to be temperature dependent. Above the T-nr, the Q(HW)(U) is close to that of austenite self diffusion, Q(SD), irrespective of the type of test or test variables. Below the T-nr, the Q(HW)(L) is not only considerably higher, but that based on multipass flow curve exibits a strong interpass time dependence. With increasing interpass time from 1.8 to 10 s the Q(HW)(L) and the T-nr increase and decrease respectively. The former is assumed to be controlled by solute drag, while the latter both by solute drag and precipitation pinning. Beyond 10 s, the two parameters exhibit the same trend, and the precipitation pinning is assumed to be the only recrystallization inhibiting mechanism. PB - Verlag Stahleisen Mbh, Dusseldorf T2 - Steel Research T1 - Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel EP - 312 IS - 7 SP - 306 VL - 68 DO - 10.1002/srin.199701794 ER -
@article{ author = "Drobnjak, Đorđe and Radović, Nenad and Andjeli, M and Koprivica, Ankica", year = "1997", abstract = "The effect of test variables on the apparent activation energy for hot working of a medium carbon V-microalloyed steel, Q(HW), and the critical recrystallization temperature, T-nr, have been studied by means of isothermal continuous and anisothermal multipass torsion test. The Q(HW) is found to be temperature dependent. Above the T-nr, the Q(HW)(U) is close to that of austenite self diffusion, Q(SD), irrespective of the type of test or test variables. Below the T-nr, the Q(HW)(L) is not only considerably higher, but that based on multipass flow curve exibits a strong interpass time dependence. With increasing interpass time from 1.8 to 10 s the Q(HW)(L) and the T-nr increase and decrease respectively. The former is assumed to be controlled by solute drag, while the latter both by solute drag and precipitation pinning. Beyond 10 s, the two parameters exhibit the same trend, and the precipitation pinning is assumed to be the only recrystallization inhibiting mechanism.", publisher = "Verlag Stahleisen Mbh, Dusseldorf", journal = "Steel Research", title = "Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel", pages = "312-306", number = "7", volume = "68", doi = "10.1002/srin.199701794" }
Drobnjak, Đ., Radović, N., Andjeli, M.,& Koprivica, A.. (1997). Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel. in Steel Research Verlag Stahleisen Mbh, Dusseldorf., 68(7), 306-312. https://doi.org/10.1002/srin.199701794
Drobnjak Đ, Radović N, Andjeli M, Koprivica A. Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel. in Steel Research. 1997;68(7):306-312. doi:10.1002/srin.199701794 .
Drobnjak, Đorđe, Radović, Nenad, Andjeli, M, Koprivica, Ankica, "Effect of test variables on apparent activation energy for hot working and critical recrystallization temperatures of V-microalloyed steel" in Steel Research, 68, no. 7 (1997):306-312, https://doi.org/10.1002/srin.199701794 . .