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The most effective carbide-forming elements titanium and niobium were added into hardfacing alloy. Formation and composition of carbides in the hardfacing alloy were investigated by means of optical microscope (OM), scanning electron microscope (SEM), X-ray diffraction (XRD) and energy-dispersive spectrometer (EDS). Hardness and impact toughness of the hardfacing alloy were measured. The thermodynamics...
The nature of eutectic carbide formation in economically alloyed high-speed steels with supplementary addition of niobium and titanium is considered. Changes in matrix and carbide chemical composition in relation to heat treatment stages are discussed. An experimental steel is recommended as a replacement for classical steel R6M5.
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