Microstructure and fracture mode of unalloyed dual-phase austempered ductile iron
2022
Аутори
Janjatović, Petar D.Erić-Cekić, Olivera
Rajnović, Dragan
Baloš, Sebastian
Grabulov, Vencislav
Šiđanin, Leposava
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Dual-phase ADI material microstructure consists of different amounts and morphologies of ausferrite and free ferrite, obtained by subjecting ductile iron to specific heat treatment. Its strength is lower compared to comparable ADI materials but exhibits a higher ductility, the major disadvantage of ADI. In the current study, an unalloyed ductile iron was intercritical austenitized in two-phase regions (??+??) at four temperatures from 840 to 780 ??C for 2 h and austempered at 400 ??C for 1 h to obtain dual-phase ADI with different percentages of free ferrite and ausferrite. Light and scanning electron microscopy was performed for the metallographic and fracture studies, respectively. Microscopy results were correlated to tensile testing results. The results indicated that, as the amount of ausferrite present in the matrix increases, higher values of strength and lower ductility are obtained. The fracture surfaces of dual-phase ADI microstructures with 22.8% of ausferrite in their matri...x have regions of quasi-cleavage fracture around last-to-freeze zones, related to the presence of ausferrite in those areas. The specimens with the highest values of ausferrite of 86.8% among the dual-phase microstructure have a dominant quasi-cleavage type of fracture.
Кључне речи:
surface of fracture / microstructure / dual matrix structure / austempered ductile ironИзвор:
Chemical Industry & Chemical Engineering Quarterly, 2022, 28, 2, 161-167Издавач:
- Savez hemijskih inženjera, Beograd
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200156 (Универзитет у Новом Саду, Факултет техничких наука) (RS-MESTD-inst-2020-200156)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200213 (Иновациони центар Машинског факултета у Београду доо) (RS-MESTD-inst-2020-200213)
DOI: 10.2298/CICEQ201222027J
ISSN: 1451-9372
WoS: 000812276400007
Scopus: 2-s2.0-85130555792
Институција/група
Inovacioni centarTY - JOUR AU - Janjatović, Petar D. AU - Erić-Cekić, Olivera AU - Rajnović, Dragan AU - Baloš, Sebastian AU - Grabulov, Vencislav AU - Šiđanin, Leposava PY - 2022 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3692 AB - Dual-phase ADI material microstructure consists of different amounts and morphologies of ausferrite and free ferrite, obtained by subjecting ductile iron to specific heat treatment. Its strength is lower compared to comparable ADI materials but exhibits a higher ductility, the major disadvantage of ADI. In the current study, an unalloyed ductile iron was intercritical austenitized in two-phase regions (??+??) at four temperatures from 840 to 780 ??C for 2 h and austempered at 400 ??C for 1 h to obtain dual-phase ADI with different percentages of free ferrite and ausferrite. Light and scanning electron microscopy was performed for the metallographic and fracture studies, respectively. Microscopy results were correlated to tensile testing results. The results indicated that, as the amount of ausferrite present in the matrix increases, higher values of strength and lower ductility are obtained. The fracture surfaces of dual-phase ADI microstructures with 22.8% of ausferrite in their matrix have regions of quasi-cleavage fracture around last-to-freeze zones, related to the presence of ausferrite in those areas. The specimens with the highest values of ausferrite of 86.8% among the dual-phase microstructure have a dominant quasi-cleavage type of fracture. PB - Savez hemijskih inženjera, Beograd T2 - Chemical Industry & Chemical Engineering Quarterly T1 - Microstructure and fracture mode of unalloyed dual-phase austempered ductile iron EP - 167 IS - 2 SP - 161 VL - 28 DO - 10.2298/CICEQ201222027J ER -
@article{ author = "Janjatović, Petar D. and Erić-Cekić, Olivera and Rajnović, Dragan and Baloš, Sebastian and Grabulov, Vencislav and Šiđanin, Leposava", year = "2022", abstract = "Dual-phase ADI material microstructure consists of different amounts and morphologies of ausferrite and free ferrite, obtained by subjecting ductile iron to specific heat treatment. Its strength is lower compared to comparable ADI materials but exhibits a higher ductility, the major disadvantage of ADI. In the current study, an unalloyed ductile iron was intercritical austenitized in two-phase regions (??+??) at four temperatures from 840 to 780 ??C for 2 h and austempered at 400 ??C for 1 h to obtain dual-phase ADI with different percentages of free ferrite and ausferrite. Light and scanning electron microscopy was performed for the metallographic and fracture studies, respectively. Microscopy results were correlated to tensile testing results. The results indicated that, as the amount of ausferrite present in the matrix increases, higher values of strength and lower ductility are obtained. The fracture surfaces of dual-phase ADI microstructures with 22.8% of ausferrite in their matrix have regions of quasi-cleavage fracture around last-to-freeze zones, related to the presence of ausferrite in those areas. The specimens with the highest values of ausferrite of 86.8% among the dual-phase microstructure have a dominant quasi-cleavage type of fracture.", publisher = "Savez hemijskih inženjera, Beograd", journal = "Chemical Industry & Chemical Engineering Quarterly", title = "Microstructure and fracture mode of unalloyed dual-phase austempered ductile iron", pages = "167-161", number = "2", volume = "28", doi = "10.2298/CICEQ201222027J" }
Janjatović, P. D., Erić-Cekić, O., Rajnović, D., Baloš, S., Grabulov, V.,& Šiđanin, L.. (2022). Microstructure and fracture mode of unalloyed dual-phase austempered ductile iron. in Chemical Industry & Chemical Engineering Quarterly Savez hemijskih inženjera, Beograd., 28(2), 161-167. https://doi.org/10.2298/CICEQ201222027J
Janjatović PD, Erić-Cekić O, Rajnović D, Baloš S, Grabulov V, Šiđanin L. Microstructure and fracture mode of unalloyed dual-phase austempered ductile iron. in Chemical Industry & Chemical Engineering Quarterly. 2022;28(2):161-167. doi:10.2298/CICEQ201222027J .
Janjatović, Petar D., Erić-Cekić, Olivera, Rajnović, Dragan, Baloš, Sebastian, Grabulov, Vencislav, Šiđanin, Leposava, "Microstructure and fracture mode of unalloyed dual-phase austempered ductile iron" in Chemical Industry & Chemical Engineering Quarterly, 28, no. 2 (2022):161-167, https://doi.org/10.2298/CICEQ201222027J . .