Abstract
The production, structurization, and resultant properties of metal matrix ‘iron–carbon alloy–granular hardmetal reinforcement’ materials are studied. The vacuum suction method ensures almost complete filling of interparticle voids with molten metals and results in composites containing hardmetal reinforcement with 0.17–0.7 mm particles. The composites show the microstructure that has no pronounced transition zone at the hardmetal–metal interface and has a ‘granular’ austenitic cast iron matrix and a significant amount of lamellar graphite. The mechanical properties and abrasive impact wear resistance of the white cast iron and carbon steel materials are examined. The optimum combination of properties is exhibited by the composite consisting of steel 45 and 60 vol.% KKhNF15 hardmetal.
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