Properties of stainless steel based on ferritic steel X6Cr13 made by powder metallurgy

摘要

Purpose: of this paper is to define influence of different concentration of reinforcement in form of X2CrNiMo25-7-4 steel powder on the properties of sintered ferritic stainless steel X6Cr13.Design/methodology/approach: In presented study, material for investigation was manufactured by powder metallurgy from ferritic powders with appropriate contribution of austenitic-ferritic stainless steels powders. Prepared mixes have been pressed by cold isostatic pressing (CIP) at 350 MPa and sintered in vacuum furnace at 1250°C for 1 h. Obtained samples were examined by scanning electron microscopy (SEM), X-ray diffraction analysis and confocal microscopy for depth of the wear traces observation. Properties like porosity, density, wear resistance, macro- and microhardness were evaluated.Findings: Researches show that addition of 5-15% powder duplex stainless steel caused the significant increase in hardness and microhardness of X6Cr13 steel. Small amount of reinforcement powder improved the value of wear resistance of base material.Research limitations/implications: Contribute to study the properties of materials with the base of ferritic stainless steel reinforced by X2CrNiMo25-7-4 particles using powder metalurgy. The next step for research will be to examine tensile properties and corrosion resistance which is a fundamental property required for the described steels.Practical implications: Development of a new type of materials applicable in the industry which are characterized by a higher wear resistance and good mechanical properties.Originality/value: The obtain results show the possibility of creation the newest materials base on X6Cr13 steels with better properties caused by proper volume fraction of reinforcement