Omer Colova
@karabuk.edu.tr
Karabük University
Scopus Publications
- Rolling Contact Fatigue and Wear Characteristics of ER9 Wheel and R350HT Rail under Sand, Oil, and Leaves Contamination
Ömer Çölova, Hayrettin Ahlatcı, Khangardash Asgarov, Harun Çuğ
Tribology Transactions, 2026 - INFLUENCE STRUCTURE ON THE PLASTICITY OF CARBON STEEL OF THE RAILWAY WHEEL RIM IN OPERATION
Igor Alex VAKULENKO, Leonid VAKULENKO, Dariy BOLOTOVA, Bulent KURT, Hangardash ASGAROV, Ömer ÇÖLOVA
Scientific Journal of Silesian University of Technology Series Transport, 2022
When simulating the operating conditions of the rim of a railway wheel, an analysis of change in the structural state from the possible degree of plastic deformation and the heating temperature of steel near the rolling surface was carried out. The development processes of spheroidization and coalescence of cementite during heating of the cold-worked steel change its ability to strain hardening. Substructure changes during heating to temperatures of 500-550°C deformed steel are accompanied by a simultaneous decrease in its ability to strain hardening and the level of plasticity. When heated above 500-550°C, the development of ferrite recrystallization processes provides a gradual transition of the metal from substructure hardening to hardening from grain boundaries with large angles of disorientation. It is shown that regardless of the nature of the main structural element, the ability of steel to strain hardening and the level of plasticity after heating are related by a proportional relationship.
RECENT SCHOLAR PUBLICATIONS
- Rolling Contact Fatigue and Wear Characteristics of ER9 Wheel and R350HT Rail under Sand, Oil, and Leaves Contamination
Ö Çölova, H Ahlatcı, K Asgarov, H Çuğ
Tribology Transactions 69 (2), 260-282 , 2026
2026.0 - Ankara İlinde Alternatif Kent İçi Raylı Sistem Güzergâh Planlaması: Sincan-Koru Metro Hattı Örneği
Ö Çölova, O Arslan, F Gülbitti
Demiryolu Mühendisliği, 169-182 , 2024
2024.0
Citations: 1 - Influence structure on the plasticity of carbon steel of the railway wheel rim in operation
IA Vakulenko, LI Vakulenko, DM Bolotova, B Kurt, H Asgarov, Ö Çölova
Silesian University of Technology, Poland , 2022
2022.0
Citations: 7 - Structural changes at metal of a railway wheel along rolling surface
CO Vakulenko I. Alex., Kurt B., Bolotova D.
6nd International Conference on Material Science and Technology in … , 2021
2021.0 - Investigation of microstructural and mechanical properties of carburized general construction steel
O Çölova, K Asgarov
Physical Metallurgy and Heat Treatment of Metals 4 (4 (95)), 75-82 , 2021
2021.0 - KARBÜRLEME YAPILAN GENEL YAPI ÇELİĞİNİN MİKROYAPI VE MEKANİK ÖZELLİKLERİNİN İNCELENMESİ
Ö ÇÖLOVA
2021.0 - www. imstec. org
B KURT, C ÇARBOĞA, ZB ÖZTÜRK
MOST CITED SCHOLAR PUBLICATIONS
- Influence structure on the plasticity of carbon steel of the railway wheel rim in operation
IA Vakulenko, LI Vakulenko, DM Bolotova, B Kurt, H Asgarov, Ö Çölova
Silesian University of Technology, Poland , 2022
2022.0
Citations: 7 - Ankara İlinde Alternatif Kent İçi Raylı Sistem Güzergâh Planlaması: Sincan-Koru Metro Hattı Örneği
Ö Çölova, O Arslan, F Gülbitti
Demiryolu Mühendisliği, 169-182 , 2024
2024.0
Citations: 1 - Rolling Contact Fatigue and Wear Characteristics of ER9 Wheel and R350HT Rail under Sand, Oil, and Leaves Contamination
Ö Çölova, H Ahlatcı, K Asgarov, H Çuğ
Tribology Transactions 69 (2), 260-282 , 2026
2026.0 - Structural changes at metal of a railway wheel along rolling surface
CO Vakulenko I. Alex., Kurt B., Bolotova D.
6nd International Conference on Material Science and Technology in … , 2021
2021.0 - Investigation of microstructural and mechanical properties of carburized general construction steel
O Çölova, K Asgarov
Physical Metallurgy and Heat Treatment of Metals 4 (4 (95)), 75-82 , 2021
2021.0 - KARBÜRLEME YAPILAN GENEL YAPI ÇELİĞİNİN MİKROYAPI VE MEKANİK ÖZELLİKLERİNİN İNCELENMESİ
Ö ÇÖLOVA
2021.0 - www. imstec. org
B KURT, C ÇARBOĞA, ZB ÖZTÜRK
