Microstructure and abrasive wear properties of M(Cr,Fe)₇C₃carbides reinforced high-chromium carbon coating produced by gas tungsten arc welding (GTAW) process

• Autorzy: Buytoz, Soner , Yildirim, M. Mustafa
• Języki publikacji: EN

Abstrakty

EN

In the present study, high-chromium ferrochromium carbon hypereutectic alloy powder was coated on AISI 4340 steel by the gas tungsten arc welding (GTAW) process. The coating layers were analyzed by optical microscopy, X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), X-ray energy-dispersive spectroscopy (EDS). Depending on the gas tungsten arc welding pa-rameters, either hypoeutectic or hypereutectic microstructures were produced. Wear tests of the coatings were carried out on a pin-on-disc apparatus as function of contact load. Wear rates of the all coating layers were decreased as a function of the loading. The improvement of abrasive wear resistance of the coating layer could be attributed to the high hardness of the hypereutectic M₇C₃ carbides in the microstruc-ture. As a result, the microstructure of surface layers, hardness and abrasive wear behaviours showed different characteristics due to the gas tungsten arc welding parameters.

Słowa kluczowe

PL

metoda TIG; zużycie ścierne; węglik M7C3

EN

TIG process; abrasive wear; M7C3 carbide

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 279--286
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Buytoz, Soner

• University of Fırat, Faculty of Technical Education, Department of Metallurgy, Elazig, 23119 Turkey,

autor

Yildirim, M. Mustafa

• University of Dumlupinar, Department of Mechanical Engineering, Kutahya, Turkey

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