Abstract: Ferrous alloys and methods of forming the ferrous alloys are disclosed. A ferrous alloy material may include iron and boron and an outer case layer. The outer case layer may have an average grain size of ASTM 9 or finer and may have a case thickness of at least 0.001 inches. The boron concentration of the outer case layer may be greater than a boron concentration of a core of the material. The ferrous alloy material may also include a nitrogen scavenging agent and may have a nitrogen concentration in the outer case layer that is greater than a nitrogen concentration in the core of the material. The alloy may be formed by performing a carburizing step and a nitriding step above the upper critical temperature on a boron steel. The method may include a single heat and quench cycle.

Abstract: A high rigid spheroidal graphite cast iron, comprising: 2.0 mass % to less than 2.7 mass % or more than 3.0 mass % to less than 3.6 mass % of C, 1.5 to 3.0 mass % of Si, 1.0% or less of Mn, 1.0 mass % or less of Cu, 0.02 to 0.07 mass % of Mg and the residual Fe and inevitable impurities, wherein a carbon equivalent (a CE value) calculated by the mathematical expression (1): CE=C (mass %)+Si (mass %)/3 in terms of C and Si contents is 2.8 to 3.2% within a first range from 2.0 mass % to less than 2.7 mass % of C and is 3.6 to 4.2% within a second range from more than 3.0 mass % to less than 3.6 mass % of C, and the Young's modulus is 170 GPa or more.

Abstract: A process for producing a casing for a roller press for subjecting particulate matter to be ground to high pressure treatment, the casing having a profiling defined by profile comb, wherein the process includes the steps of casting a cylindrical hollow body and introducing axial longitudinal grooves onto the surface of the cylindrical hollow body. The material for casting is of a particular composition, where that composition includes, among other components, between 0.0012% and 0.0027%, by weight, of phosphorus (P).

Abstract: An iron-based alloy includes (in weight percent) carbon from about 1 to about 2 percent; manganese up to about 1 percent; silicon up to about 1 percent; nickel up to about 4 percent; chromium from about 10 to about 25 percent; molybdenum from about 5 to about 20 percent; tungsten up to about 4 percent; cobalt from about 17 to about 23 percent; vanadium up to about 1.5 percent; boron up to about 0.2 percent; sulfur up to about 0.03 percent; nitrogen up to about 0.4 percent; phosphorus up to about 0.06 percent; niobium up to about 4 percent; iron from about 35 to about 55 percent; and incidental impurities. The chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5. The alloy is suitable for use in elevated temperature applications, such as valve seat inserts for combustion engines.

Abstract: The invention provides a flake graphite cast iron being highly strong and excellent in workability such as cutting performance, which is suitable for use, for example, in internal combustion engine parts and the like, and a production method thereof without using a misch metal. Specifically, the flake graphite cast iron according to the invention includes an A-type graphite with a uniformly and disorderly distributed existence form without directionality; and has a chemical composition containing 2.8 to 4.0 mass % of C, 1.2 to 3.0 mass % of Si, 1.1 to 3.0 mass % of Mn, 0.01 to 0.6 mass % of P, 0.01 to 0.30 mass % of S and the remainder being Fe and inevitable impurities, wherein the ratio (Mn/S) of the Mn content to the S content is within a range of 3 to 300.

Abstract: A cylinder liner for an internal combustion engine may include a cast iron alloy having a pearlitic structure with at least 70% of graphitization with spheroidal graphite morphology. The cast iron alloy may include at least 2.8% to 4.0% in weight of carbon; 1.8% to 3.5% in weight of silicon; 0.2% to 1.0% in weight of manganese; a maximum of 0.5% in weight of phosphorus; a maximum of 0.05% in weight of sulfur; a maximum of 0.5% in weight of vanadium; a maximum of 0.5% in weight of molybdenum; 0.2% to 1.5% in weight of nickel; a maximum of 0.3% in weight of tin; 0.005% to 0.06% in weight of magnesium.

Abstract: A spheriodal cast alloy for producing cast iron products with great mechanical strength, high-wear resistance and a high degree of ductility. The alloy comprises the following as non-iron components: between 2.5 and 2.8 wt. % C, between 2.4 and 3.4 wt. % Si, between 0.02 and 0.08 wt. % P, between 0.02 and 0.06 wt. % Mg, between 0.01 and 0.05 wt. % Cr, between 0.002 and 0.02 wt. % Al, between 0.0005 and 0.015 wt. % S, between 0.0002 and 0.002 wt. % B and conventional impurities. The alloy contains between 3.0 and 3.7 wt. % C, between 2.6 and 3.4 wt. % Si, between 0.02 and 0.05 wt. % P, between 0.025 and 0.045 wt. % Mg, between 0.01 and 0.03 wt. % Cr, between 0.003 and 0.017 wt. % Al, between 0.0005 and 0.012 wt. % S and between 0.0004 and 0.002 wt. % B. The alloy is used for example to produce chassis parts or brake discs in the automobile industry.

Abstract: Weld deposit compositions with improved abrasion and corrosion resistance are provided by balancing percent weights of Chromium (Cr), Titanium (Ti), Niobium (Nb), and Boron (B) to allow the Chromium content of the weld matrix to be minimally reduced during carbide formation. The result is an enriched Chromium matrix that has excellent corrosion resistance in combination with highly abrasion resistant dispersed carbides.

Abstract: An engine component such as, for example, an engine piston or a part thereof, for instance a ring carrier or piston boss bushing, consisting of a cast iron alloy that contains zirconium as an alloy constituent in an amount by weight of at least 0.01% and up to 0.1%.

Abstract: A method for determining boron isotopic composition by PTIMS (Positive Thermal Ionization Mass Spectrometry)-static double collection realizes simultaneous static collection of m/e309 peak and m/e308 peak by double Faraday cups through adjusting the two parameters Focus Quad and Dispersion Quad in Zoom Optics, and completes high-accuracy determination of boron isotopic composition. The method includes (1) determining Focus Quad and Dispersion Quad parameters in the Zoom Optics of the ion source; (2) determining the two parallel cups in the Faraday collector and their parameters; (3) determining the collection mass number of the center cup of the Faraday collector.

Abstract: There is provided a method for obtaining a pure melt in which the impurities Mn, Al, Ti, Pb, Zn, and B are removed from molten cast iron and depletion of useful C and Si is suppressed, the method wherein an excess oxygen flame having a theoretical combustion ratio of fuel and oxygen (amount of oxygen (volume)×5/amount of fuel (volume)) of 1 to 1.5 is directly exposed to the surface of pre-melted molten cast iron, the temperature of the molten cast iron is held at 1250° C. or more and less than 1500° C. while the melt surface is superheated and an acidic slag is brought into contact with the melt, and an oxygen-containing gas is injected into the interior of the molten cast iron.

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 includes 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: Disclosed is a hardfacing alloy deriving its usefulness from carbides and borides of molybdenum and niobium. The alloy does not rely on chromium as an alloying agent. The hardfacing alloy is capable of being applied to a number of industrial substrates in a crack-free manner, and once applied convert the substrate to a wear- and abrasion-resistant material having an extended service life, even when subjected to harsh wear conditions.

Abstract: The invention provides a flake graphite cast iron being highly strong and excellent in workability such as cutting performance, which is suitable for use, for example, in internal combustion engine parts and the like, and a production method thereof without using a misch metal. Specifically, the flake graphite cast iron according to the invention includes an A-type graphite with a uniformly and disorderly distributed existence form without directionality; and has a chemical composition containing 2.8 to 4.0 mass % of C, 1.2 to 3.0 mass % of Si, 1.1 to 3.0 mass % of Mn, 0.01 to 0.6 mass % of P, 0.01 to 0.30 mass % of S and the remainder being Fe and inevitable impurities, wherein the ratio (Mn/S) of the Mn content to the S content is within a range of 3 to 300.

Abstract: Disclosed is a radiation shielding member having improved radiation absorption performance, including 80.0˜99.0 wt % of a polymer matrix or metal matrix and 1.0˜20.0 wt % of a radiation shielding material in the form of nano-particles having a size of 10˜900 nm as a result of pulverization, wherein the radiation shielding material is homogeneously dispersed in the matrix through powder mixing or melt mixing after treatment with a surfactant which is the same material as the matrix or which has high affinity for the matrix. A preparation method thereof is also provided. This radiation shielding member including the nano-particles as the shielding material further increases the collision probability of the shielding material with radiation, compared to conventional shielding members including micro-particles, thus reducing the mean free path of radiation in the shielding member, thereby exhibiting superior radiation shielding effects.

Abstract: The present disclosure relates to an iron based alloy composition that may include iron present in the range of 45 to 70 atomic percent, nickel present in the range of 10 to 30 atomic percent, cobalt present in the range of 0 to 15 atomic percent, boron present in the range of 7 to 25 atomic percent, carbon present in the range of 0 to 6 atomic percent, and silicon present in the range of 0 to 2 atomic percent, wherein the alloy composition exhibits an elastic strain of greater than 0.5% and a tensile strength of greater than 1 GPa.

Abstract: An alloy composition comprising iron present in the range of 49 atomic percent (at %) to 65 at %, nickel present in the range of 10.0 at % to 16.5 at %, cobalt optionally present in the range of 0.1 at % to 12 at %, boron present in the range of 12.5 at % to 16.5 at %, silicon optionally present in the range of 0.1 at % to 8.0 at %, carbon optionally present in the range of 2 at % to 5 at %, chromium optionally present in the range of 2.5 at % to 13.35 at %, and niobium optionally present in the range of 1.5 at % to 2.5 at %, wherein the alloy composition exhibits spinodal glass matrix microconstituents when cooled at a rate in the range of 103K/s to 104K/s and develops a number of shear bands per linear meter in the range of greater than 1.1×102 m?1 to 107 m?1 upon application of a tensile force applied at a rate of 0.001 s?1.

Abstract: The present disclosure relates to a wire and a method of forming a wire including an iron based glass forming alloy including iron present in the range of 43.0 to 68.0 atomic percent, boron present in the range of 12.0 to 19.0 atomic percent, nickel present in the range of 15.0 to 17.0 atomic percent, cobalt present in the range of 2.0 to 21.0 atomic percent, optionally carbon present in the range of 0.1 to 6.0 atomic percent and optionally silicon present in the range of 0.4 to 4.0 atomic percent, wherein said wire has a thickness of 140 ?m or less and wherein said wire includes spinodal glass matrix microconstituents. The wire may be used in abrading a substrate.

Abstract: A liner material for a backing steel cylinder, comprising an iron-based hard facing alloy comprising at least one rare earth element, and a high pressure cylinder assembly, comprising a backing steel cylinder, and a liner covering at least a portion of an inner surface of the backing steel cylinder, the liner comprising an iron-based hard facing alloy comprising at least a rare earth element are disclosed. The thickness of the liner material in the cylinder ranges from 0.030 inches (762 microns) to 0.375 inches (9525 microns). A method of lining a high pressure cylinder assembly, comprising applying an iron-based hard facing alloy comprising at least one rare earth element onto the backing steel cylinder of the high pressure cylinder assembly is also disclosed. The rare earth element includes cerium in an amount less than 2 weight percent based on the weight of the iron-based hard facing alloy.

Abstract: The present disclosure relates to an iron based alloy composition that may include iron present in the range of 45 to 70 atomic percent, nickel present in the range of 10 to 30 atomic percent, cobalt present in the range of 0 to 15 atomic percent, boron present in the range of 7 to 25 atomic percent, carbon present in the range of 0 to 6 atomic percent, and silicon present in the range of 0 to 2 atomic percent, wherein the alloy composition exhibits an elastic strain of greater than 0.5% and a tensile strength of greater than 1 GPa.

Abstract: This application deals with glass forming iron based alloys which when produced as a metallic glass or mixed structure comprising metallic glass and nanocrystalline phases, results in extraordinary combinations of strength and ductility. Specifically, high strain up to 97% and high strength up to 5.9 GPa has been measured. Additionally, consistent with the amorphous structure high elasticity up to 2.6% has been observed. Thus, the new alloys developed result in structures and properties which yield high elasticity corresponding to a metallic glass, high plasticity corresponding to a ductile crystalline metal, and high strength as may be observed in nanoscale materials.

Abstract: Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50 atomic percent iron as the major component. The remaining composition combines suitable mixtures of metalloids (Group b elements) and other elements selected mainly from manganese, chromium, and refractory metals. Various classes of non-ferromagnetic ferrous-based bulk amorphous metal alloys are obtained. One class is a high-manganese class that contains manganese and boron as the principal alloying components. Another class is a high manganese-high molybdenum class that contains manganese, molybdenum, and carbon as the principal alloying components. These bulk-solidifying amorphous alloys can be obtained in various forms and shape for various applications and utlizations. The good processability of these alloys can be attributed to the high reduced glass temperature Trg (e.g., about 0.6 to 0.

Abstract: A spheriodal cast alloy for producing cast iron products with great mechanical strength, high-wear resistance and a high degree of ductility. The alloy comprises the following as non-iron components: between 2.5 and 2.8 wt. % C, between 2.4 and 3.4 wt. % Si, between 0.02 and 0.08 wt. % P, between 0.02 and 0.06 wt. % Mg, between 0.01 and 0.05 wt. % Cr, between 0.002 and 0.02 wt. % Al, between 0.0005 and 0.015 wt. % S, between 0.0002 and 0.002 wt. % B and conventional impurities. The alloy contains between 3.0 and 3.7 wt. % C, between 2.6 and 3.4 wt. % Si, between 0.02 and 0.05 wt. % P, between 0.025 and 0.045 wt. % Mg, between 0.01 and 0.03 wt. % Cr, between 0.003 and 0.017 wt. % Al, between 0.0005 and 0.012 wt. % S and between 0.0004 and 0.002 wt. % B. The alloy is used for example to produce chassis parts or brake discs in the automobile industry.

Abstract: A gray cast iron member includes 2.2–2.8 weight % C, 2.3–3.5 weight % Si, 0.2–0.8 weight % Mn, up to 0.1 weight % P, up to 0.15 weight % S, 0.6–1.4 weight % Cu, up to 0.5 weight % Mo, up to 0.3 weight % Cr, and the balance substantially Fe, Si/C being 0.95 or more, (Si/C)/Cu being up to 1.5. Preferably, it further includes at least one of Ni, Sn, V, Sb and N each in an amount of up to 0.3 weight %.

Abstract: Iron based amorphous steel alloy having a high Manganese content and being non-ferromagnetic at ambient temperature. The bulk-solidifying ferrous-based amorphous alloys are multicomponent systems that contain about 50 atomic percent iron as the major component. The remaining composition combines suitable mixtures of metalloids (Group b elements) and other elements selected mainly from manganese, chromium, and refractory metals. Various classes of non-ferromagnetic ferrous-based bulk amorphous metal alloys are obtained. One class is a high-manganese class that contains manganese and boron as the principal alloying components. Another class is a high manganese-high molybdenum class that contains manganese, molybdenum, and carbon as the principal alloying components. These bulk-solidifying amorphous alloys can be obtained in various forms and shape for various applications and utlizations. The good processability of these alloys can be attributed to the high reduced glass temperature Trg (e.g., about 0.6 to 0.

Abstract: The purpose of the present invention is to provide high manganese cast iron containing spheroidal vanadium carbide and method for making which is nonmagnetic as well as superior mechanical properties such as wear-resistance and toughness, and further does not require a water toughing heat treatment which has been needed when nonmagnetic high manganese steel (high manganese cast steel) is obtained by crystallized spheroidal vanadium in austenite matrix, and the high manganese cast iron containing spheroidal vanadium carbide is comprised of C 1.5˜4.0 weight %, V 6˜15 weight %, Si 0.2˜4.0 weight %, Mn 10˜18 weight %, Mg 0.01˜0.1 weight %, remaining iron (Fe) and inevitable impurities, spheroidal vanadium carbide is crystallized within a structure.

Abstract: A modified nodular cast iron alloy contains positive additions of boron and silicon in a content of greater than 2.4% by wt.

Abstract: A modified nodular cast iron alloy contains positive additions of boron and silicon in a content of greater than 2.4% by wt.

Abstract: Anisotropic permanent magnets consisting essentially of RE.sub.2 TM.sub.14 C are prepared by hot working suitable iron-neodymium/praseodymium-carbon containing alloys so as to produce deformed fine grains of the above essential magnetic phase.

Abstract: A method for economically manufacturing an iron-boron-silicon alloy through simple steps, which comprises the steps of: adding a boron raw material and a carbonaceous reducing agent to a molten iron received in a vessel; blowing oxygen gas into the molten iron to reduce the boron raw material in the molten iron by means of the carbonaceous reducing agent to prepare a boron-containing molten iron; continuing the blowing of oxygen gas to decarburize the boron-containing molten iron until the carbon content in the boron-containing molten iron decreases to up to 0.2 wt. %; and adding at least one of silicon and ferrosilicon to the boron-containing molten iron while stirring the boron-containing molten iron, thereby manufacturing an iron-boron-silicon alloy.

Abstract: A permanent magnet alloy having at least one light rare earth element, iron and carbon. The alloy has a cellular microstructure of at least two solid phases with a Fe.sub.14 R.sub.2 C.sub.1 magnetically hard, tetragonal major phase surrounded by at least one minor phase. The light rare earth element may be Pr or Nd. At least one heavy rare earth element, such as Dy, may be used. Boron may be included in the alloy. The alloy is produced by casting and heating to form the Fe.sub.14 R.sub.2 (C,B).sub.1 magnetically hard, tetragonal major phase.

Abstract: This invention relates to cast iron and more particularly to the improvement in the toughness and abrasive resistance of white cast iron along with a significant increase in tensile strength. More specifically, the present invention relates to a new white cast iron composition and a process for producing such cast iron having improved toughness, ductility and tensile strength while retaining desirable abrasive resistance through modification of the carbide morphology.