Abstract:
Embodiments of alloys having high, fine-grained carbide content, and methods of manufacturing such alloys. The alloys can be determined through the use of thermodynamic, microstructural, and compositional criterial in order to create a high strength and high toughness alloy. In some embodiments, the alloys can be used as a wear resistant component.
Abstract:
A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50.
Abstract:
The invention relates to a steel product simultaneously combining a high elastic modulus E, low density and high strength and to a method to produce said steel.
Abstract:
A nodular graphite cast iron, a method for fabricating a vane for a rotary compressor using nodular graphite cast iron, and a vane for a rotary compressor using the same are provided. The nodular graphite cast iron is comprised of 3.4 wt% to 3.9 wt% of carbon (C), 2.0 wt% to 3.0 wt% of silicon (Si), 0.3 wt% to 1.0 wt% of manganese (Mn), 0.1 wt% to 1.0 wt% of chromium (Cr), 0.04 wt% to 0.15 wt% of titanium (Ti), less than 0.08 w% of phosphorus (P), less than 0.025 wt% of sulphur (S), 0.03 wt% to 0.05 wt% of magnesium (Mg), 0.02 wt% to 0.04 wt% of rare earth resource, iron (Fe) and impurities as the remnants, and includes a bainite matrix structure, nodular graphite, and 15 vol% to 35 vol% of carbide.
Abstract:
The present disclosure relates to an alloy cast iron, a method of manufacturing a vane for a rotary compressor, and a vane for a rotary compressor using the alloy cast iron. The alloy cast iron according to one exemplary embodiment comprises, by weight, 3.2 to 3.8% C, 2.0 to 2.6% Si, 0.5 to 1.0% Mn, 0.2 to 0.6% Cr, 0.1 to 0.6% Mo, 0.04 to 0.15% Ti, P less than 0.3%, S less than 0.1%, and the rest percentage of Fe and foreign materials, wherein the alloy cast iron comprises a martensitic matrix structure, flake graphite, and 15 to 30% carbide in volume ratio.
Abstract:
Brake disc for a disc brake comprising a braking band made in a cast iron comprising carbon, silicon, manganese, molybdenum, chrome. Advantageously, the brake disc has characteristics of elevated resistance to mechanical and thermal stresses, as well as a high resistance to corrosion.