TY  - JOUR
AU  - Dikić, Stefan
AU  - Glišić, Dragomir
AU  - Fadel, Abdunnaser
AU  - Jovanovic, Gvozden
AU  - Radović, Nenad
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4873
AB  - Isothermal transformation characteristics of a medium carbon Ti-V microalloyed steel were investigated using light microscopy, scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS), and by uniaxial compressive testing. Samples austenitized on 1100 degrees C were isothermally treated in the range from 350 to 600 degrees C and subsequently water quenched. The final microstructure of the samples held at 350 degrees C consisted of bainitic sheaves and had compressive yield strength, approximately from 1000 MPa, which is attributed to high dislocation density of low bainite. At 400 and 450 degrees C, acicular ferrite became prevalent in the microstructure. It was also formed by a displacive mechanism, but the dislocation density was lower, leading to a decrease of compressive yield strength to approximately 700 MPa. The microstructure after the heat treatment at 500 degrees C consisted of coarse non-polygonal ferrite grains separated by pearlite colonies, principally dislocation free grains, so that the compressive YS reached a minimum value of about 700 MPa. The microstructure of the samples heat-treated at 550 and 600 degrees C consisted of pearlite and both grain boundary and intragranular ferrite, alongside with some martensite. After 600 s, austenite became stable and transformed to martensite after water quenching. Therefore, the presence of martensite increased the compressive YS to approx. 800 MPa.
T2  - Metals
T1  - Structure and Strength of Isothermally Heat-Treated Medium Carbon Ti-V Microalloyed Steel
IS  - 7
VL  - 11
DO  - 10.3390/met11071011
ER  - 

@article{
author = "Dikić, Stefan and Glišić, Dragomir and Fadel, Abdunnaser and Jovanovic, Gvozden and Radović, Nenad",
year = "2021",
abstract = "Isothermal transformation characteristics of a medium carbon Ti-V microalloyed steel were investigated using light microscopy, scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS), and by uniaxial compressive testing. Samples austenitized on 1100 degrees C were isothermally treated in the range from 350 to 600 degrees C and subsequently water quenched. The final microstructure of the samples held at 350 degrees C consisted of bainitic sheaves and had compressive yield strength, approximately from 1000 MPa, which is attributed to high dislocation density of low bainite. At 400 and 450 degrees C, acicular ferrite became prevalent in the microstructure. It was also formed by a displacive mechanism, but the dislocation density was lower, leading to a decrease of compressive yield strength to approximately 700 MPa. The microstructure after the heat treatment at 500 degrees C consisted of coarse non-polygonal ferrite grains separated by pearlite colonies, principally dislocation free grains, so that the compressive YS reached a minimum value of about 700 MPa. The microstructure of the samples heat-treated at 550 and 600 degrees C consisted of pearlite and both grain boundary and intragranular ferrite, alongside with some martensite. After 600 s, austenite became stable and transformed to martensite after water quenching. Therefore, the presence of martensite increased the compressive YS to approx. 800 MPa.",
journal = "Metals",
title = "Structure and Strength of Isothermally Heat-Treated Medium Carbon Ti-V Microalloyed Steel",
number = "7",
volume = "11",
doi = "10.3390/met11071011"
}

Dikić, S., Glišić, D., Fadel, A., Jovanovic, G.,& Radović, N.. (2021). Structure and Strength of Isothermally Heat-Treated Medium Carbon Ti-V Microalloyed Steel. in Metals, 11(7).
https://doi.org/10.3390/met11071011

Dikić S, Glišić D, Fadel A, Jovanovic G, Radović N. Structure and Strength of Isothermally Heat-Treated Medium Carbon Ti-V Microalloyed Steel. in Metals. 2021;11(7).
doi:10.3390/met11071011 .

Dikić, Stefan, Glišić, Dragomir, Fadel, Abdunnaser, Jovanovic, Gvozden, Radović, Nenad, "Structure and Strength of Isothermally Heat-Treated Medium Carbon Ti-V Microalloyed Steel" in Metals, 11, no. 7 (2021),
https://doi.org/10.3390/met11071011 . .