Cleavage Fracture in Continuously Cooled V-Microalloyed Medium Carbon Steel
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Medium carbon V-microalloyed steel continuously cooled from the austenitization temperature at still air, with predominantly acicular ferrite structure, has been investigated by means of four-point bending of notched Griffiths-Owens's type specimens at liquid nitrogen temperature. Local fracture stress and plastic strain were determined by using finite element analysis and fracture surface examination using scanning electron microscope. It was revealed that cleavage fracture initiation, which takes place close to the notch root in the narrow zone of high plastic strains, is not related to any broken coarse second phase particles. It was assumed that microcracks nucleate by strain induced fracture of pearlite nodules. Two effective surface energy values of 24 and 42 J/m(2) were estimated according to the Griffith's equation, indicating the influence of crystallographic orientation between neighboring grains at the origin of fracture. Lower value was attributed to fracture of coarse ferr...ite-pearlite units with similar crystallographic orientation and higher value to fracture propagation through fine acicular ferrite matrix.
Кључне речи:
Micro-alloyed steel / Cleavage stress / Surface energyИзвор:
Fracture At All Scales, 2017, 209-219Издавач:
- Springer-Verlag Berlin, Berlin
DOI: 10.1007/978-3-319-32634-4_11
ISSN: 2195-4356
WoS: 000392140800011
Scopus: 2-s2.0-85019182025
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Glišić, Dragomir AU - Radović, Nenad AU - Drobnjak, Đorđe AU - Fadel, Abdunnaser PY - 2017 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3682 AB - Medium carbon V-microalloyed steel continuously cooled from the austenitization temperature at still air, with predominantly acicular ferrite structure, has been investigated by means of four-point bending of notched Griffiths-Owens's type specimens at liquid nitrogen temperature. Local fracture stress and plastic strain were determined by using finite element analysis and fracture surface examination using scanning electron microscope. It was revealed that cleavage fracture initiation, which takes place close to the notch root in the narrow zone of high plastic strains, is not related to any broken coarse second phase particles. It was assumed that microcracks nucleate by strain induced fracture of pearlite nodules. Two effective surface energy values of 24 and 42 J/m(2) were estimated according to the Griffith's equation, indicating the influence of crystallographic orientation between neighboring grains at the origin of fracture. Lower value was attributed to fracture of coarse ferrite-pearlite units with similar crystallographic orientation and higher value to fracture propagation through fine acicular ferrite matrix. PB - Springer-Verlag Berlin, Berlin T2 - Fracture At All Scales T1 - Cleavage Fracture in Continuously Cooled V-Microalloyed Medium Carbon Steel EP - 219 SP - 209 DO - 10.1007/978-3-319-32634-4_11 ER -
@article{ author = "Glišić, Dragomir and Radović, Nenad and Drobnjak, Đorđe and Fadel, Abdunnaser", year = "2017", abstract = "Medium carbon V-microalloyed steel continuously cooled from the austenitization temperature at still air, with predominantly acicular ferrite structure, has been investigated by means of four-point bending of notched Griffiths-Owens's type specimens at liquid nitrogen temperature. Local fracture stress and plastic strain were determined by using finite element analysis and fracture surface examination using scanning electron microscope. It was revealed that cleavage fracture initiation, which takes place close to the notch root in the narrow zone of high plastic strains, is not related to any broken coarse second phase particles. It was assumed that microcracks nucleate by strain induced fracture of pearlite nodules. Two effective surface energy values of 24 and 42 J/m(2) were estimated according to the Griffith's equation, indicating the influence of crystallographic orientation between neighboring grains at the origin of fracture. Lower value was attributed to fracture of coarse ferrite-pearlite units with similar crystallographic orientation and higher value to fracture propagation through fine acicular ferrite matrix.", publisher = "Springer-Verlag Berlin, Berlin", journal = "Fracture At All Scales", title = "Cleavage Fracture in Continuously Cooled V-Microalloyed Medium Carbon Steel", pages = "219-209", doi = "10.1007/978-3-319-32634-4_11" }
Glišić, D., Radović, N., Drobnjak, Đ.,& Fadel, A.. (2017). Cleavage Fracture in Continuously Cooled V-Microalloyed Medium Carbon Steel. in Fracture At All Scales Springer-Verlag Berlin, Berlin., 209-219. https://doi.org/10.1007/978-3-319-32634-4_11
Glišić D, Radović N, Drobnjak Đ, Fadel A. Cleavage Fracture in Continuously Cooled V-Microalloyed Medium Carbon Steel. in Fracture At All Scales. 2017;:209-219. doi:10.1007/978-3-319-32634-4_11 .
Glišić, Dragomir, Radović, Nenad, Drobnjak, Đorđe, Fadel, Abdunnaser, "Cleavage Fracture in Continuously Cooled V-Microalloyed Medium Carbon Steel" in Fracture At All Scales (2017):209-219, https://doi.org/10.1007/978-3-319-32634-4_11 . .