Wear behavior of GTA coated FeCrC based bond alloy on an AISI 1040 steel substrate

Abstract

Powders of FeCrC alloy were used for cladding on AISI 1040 plain steel base metal by using gas tungsten arc (GTA) processing. Microstructures of clad layers were examined by an X-ray energy dispersive spectrometer (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD) and microhardness test. The obtained results indicated that there was a similar microstructure in the all clad layers. The adhesion of the clad layers to the base metal was very good. The microstructures of the clad layers were quite dense. Hypoeutectic or hypereutectic microstructures of the cladded surfaces depend on the powder type and processing parameters. Martensite, austenite (gamma) and eutectic M7C3 carbides were obtained at interface zone. The wear tests of the cladded surfaces were performed under dry sliding conditions. It was determined that the pearlitic/bainitic matrix had a lower wear resistance than the primary austenitic matrix.