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2019 Effects of Boron Addition on Microstructure and Tribocorrosion Behavior of 4140 Steel

In this study, up to 38ppm of boron was added to 4140 steel and the effects of this addition on microstructure and tribocorrosion were investigated. Tribocorrosion behavior was investigated in a 3.5% NaCl solution with a pin on disc method. As a result of the studies, it was found that the hardness and tribocorrosion behavior increased with the addition of boron but these values decreased with the increase in boron amount after 17ppm.

International Iron & Steel Symposium
UDCS

Tayfun AKSOY Engin ÇEVİK Hüseyin DEMIRTAS Yavuz Sun Cemal ÇARBOĞA

467 346
Subject Area: Materials Science Broadcast Area: International Type: Oral Paper Language: English
2019 Investigation of the Adhesion of Different Al2O3 Powders Coated with EN 10130 steel by CMT Technique

In this study, the surface of EN 10130 steel used in deep drawing processes in industry is coated with CMT technique. Al2O3 powder with different ratios of Al, Zn, Sn and Ni metal powders were used as coating material. Nano-sized metal powders and ceramic powders were used. This coating has been made to improve wear and corrosion resistance after deep drawing of EN 10130 steel. However, due to the lack of sufficient time for the operation and the failure of the wear device, only SEM and EDX studies were applied. In SEM studies, it was observed that the Al2O3 + Ni composition and the coating interface were not smooth. Other coating surfaces are in good condition. Although the average coating thickness varies regionally, it is 20-60 µm thick.

International Iron & Steel Symposium
UDCS

Harun ÇUĞ Erkan Koç Hüseyin DEMIRTAS

455 269
Subject Area: Materials Science Broadcast Area: International Type: Oral Paper Language: English
2017 Improvement of 16MnCr5 Steel Wear Resistance by Deformation

This study, in order to determine the effect of plastic deformation on the wear resistance are performed. The deformation of the 16MnCr5 steel was performed after annealing by tensile testing device with varying amounts. The changes in hardness was measured by Vickers hardness tester and the wear behavior was analysed by pin on disc test. Tests and measurements showed that when the amount of plastic deformation increased, wear resistance and hardness increased. And also, it is seen that the heat treatment applied at a temperature similar to the carburizing, significantly reduces the mechanical properties.

International Iron & Steel Symposium
UDCS

Hüseyin DEMIRTAS

442 259
Subject Area: Materials Science Broadcast Area: International Type: Oral Paper Language: English