TY  - 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 . .