Abstract: Steel sheets and methods for manufacturing same useful for a line pipe or the like can have excellent hydrogen induced cracking resistance, and longitudinal strength uniformity. The Sttel sheets can include certain amounts of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), aluminum (Al), nitrogen (N), niobium (Nb), titanium (Ti), calcium (Ca), one or more selected from a group consisting of nickel (Ni), chromium (Cr), molybdenum (Mo), vanadium (V), and a balance of iron (Fe) and other inevitable impurities. A microstructure of the steel sheet can be comprised of ferrite or a composite structure of ferrite and acicular ferrite, and upper bainite is included in an area of 5% or less in a center portion of the thickness of the steel sheet.

Abstract: A ferritic stainless steel for an exhaust system heat exchanger having excellent sound absorption properties and a method for manufacturing the same are disclosed. The ferritic stainless steel for an exhaust system heat exchanger having excellent sound absorption properties includes, by weight percent, 0.001 to 0.01% of C, 0.001 to 0.01% of N, 0.2 to 1% of Si, 0.1 to 2% of Mn, 10 to 30% of Cr, 0.001 to 0.1% of Ti, 0.001 to 0.015% of Al, 0.3 to 0.6% of Nb, 0.01 to 2.5% of Mo, and the balance of Fe and other unavoidable impurities, wherein the number of inclusions existing in a ferrite matrix and satisfying the following Formula 1 is 5 ea/mm2 or more.

Abstract: An Sm—Fe—N magnet material includes from 7.0 at % to 12 at % of Sm, from 0.1 at % to 1.5 at % of at least one element selected from the group consisting of Hf and Zr, from 0.05 at % to 0.5 at % of C, from 10 at % to 20 at % of N, and from 0 at % to 35 at % of Co, with a remainder being Fe and unavoidable impurities.

Abstract: A high strength steel strip having medium amounts of C, Mn, Si, Cr and Al, wherein the steel strip has a microstructure consisting of, in vol. %: ferrite and bainite together 50-90%, martensite<15%, retained austenite 5-15%, the remainder being pearlite, cementite, precipitates and inclusions together up to 5%.

Abstract: A coating includes a first base layer including a nitride of at least Al and Cr, a second base layer including a nitride of at least Al and Cr overlying the first base layer, and an outermost indicator layer overlying the second base layer. The first base layer has a positive residual compressive stress gradient. The second base layer has substantially constant residual compressive stresses. The outermost indicator layer includes a nitride of Si and Me, wherein Me is at least one of Ti, Zr, Hf, and Cr. The outermost indicator layer has residual compressive stresses that are less than the residual compressive stresses of the second base layer.

Abstract: Provided are: a steel sheet having a high strength and excellent stretch formability; and a method of producing the same. The steel sheet has prescribed chemical composition and structure, in which the integration degree of the (111)<112> orientation of ferrite is 3.0 or higher, and the integration degree of the (252)<2-11> orientation of martensite and tempered martensite is 5.0 or lower. The method of producing the steel sheet includes: the step of continuously casting a molten steel having the prescribed chemical composition, and performing 5 to 40% rolling reduction at a temperature of 800° C. to lower than 1,200° C. in a period after the continuous casting until cooling to room temperature; the hot rolling step of performing hot rolling with a finishing temperature of 650 to 950° C.; the step of coiling the resulting hot-rolled steel sheet at a coiling temperature of 400 to 700° C.; the step of retaining the hot-rolled steel sheet at (coiling start temperature+20° C. to 100° C.

Abstract: A press hardened coated steel part with high resistance to delayed fracture, the coating containing (Fex—Aly) intermetallic compounds resulting from the diffusion of iron into an aluminum or an aluminum-based alloy, or an aluminum alloy of a precoating, wherein the chemical composition of the steel includes, in weight: 0.16%?C?0.42%, 0.1%?Mn?3%, 0.07%?Si?1.60%, 0.002%?Al?0.070%, 0.02%?Cr?1.0%, 0.0005?B?0.005%, 0.002%?Mg?0.007%, 0.002%?Ti?0.11%, 0.0008%?O?0.005%, wherein (Ti)×(O)2×107?2, 0.001%?N?0.007%, 0.001%?S?0.005%, 0.001%?P?0.025% and optionally one or more elements selected from the list of: 0.005%?Ni?0.23%, 0.005%?Nb?0.060%, the remainder being Fe and unavoidable impurities, and wherein the microstructure includes at least 95% martensite.

Abstract: A hot-stamped article and method of manufacturing same use a tailor welded blank (TWB) method capable of controlling the microstructure of a weld portion to prevent fracture of the weld portion. The hot-stamped article is manufactured by welding a first sheet and a second sheet made of different kinds of materials to each other using the TWB method and hot-stamping a welded sheet. The first sheet and the second sheet have different upper austenite transformation temperatures (A3 temperatures), the first sheet and the second sheet are welded to each other via a weld portion, each of the first sheet and the weld portion has a composite structure comprising ferrite, bainite, and martensite, and the second sheet has a martensite structure.

Abstract: In one aspect, refractory coatings are described herein having multiple cubic phases. In some embodiments, a coating comprises a refractory layer of TiAlN deposited by PVD adhered to the substrate, the refractory layer comprising a cubic TiAlN phase and a cubic A1N phase, wherein a ratio of intensity in the X-ray diffractogram (XRD) of a (200) reflection of the cubic AlN phase to intensity of a (200) reflection of the cubic TiAlN phase, I(200)/I(200), is at least 0.5.

Abstract: A composite structure may include at least two nonwoven, polymeric layers bonded to each other. At least one nonwoven, polymeric layer may include inorganic particulate filler in an amount up to about 40% by weight of the nonwoven layer.

Abstract: A coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises at least one ?-type aluminum oxide layer; and, in the ?-type aluminum oxide layer, a texture coefficient TC (0,0,12) of a (0,0,12) plane is from 4.0 or more to 8.4 or less, and a texture coefficient TC (0,1,8) of a (0,1,8) plane is from 0.5 or more to 3.0 or less.

Abstract: An elongate profile having a first portion and a second portion, the first and second portions being joined together at a first joining portion, the first and second portions being non collinear, the joining portion comprising an array of raised or rebated formations, each formation extending across the joining portion in a direction which is non-parallel to the principal axis of the profile and flat lands being provided between successive formations in an array and the pitch between successive formations in an array being from 2 to 20 times, for example from 5 to 15 times, the thickness of the flatlands.

Abstract: A plasma processing device member according to the disclosure includes a base material and a film formed of an oxide, or fluoride, or oxyfluoride, or nitride of a rare-earth element, the film being disposed on at least part of the base material, the film including a surface to be exposed to plasma, the surface having an area occupancy of open pores of 8% by area or more, and an average diameter of open pores of 8 ?m or less.

Abstract: A bolt of the present invention has a composition comprising: 0.50 mass % or greater and 0.65 mass % or less of carbon (C), 1.5 mass % or greater and 2.5 mass % or less of silicon (Si), 1.0 mass % or greater and 2.0 mass % or less of chromium (Cr), 0.2 mass % or greater and 1.0 mass % or less of manganese (Mn), 1.5 mass % or greater and 5.0 mass % or less of molybdenum (Mo), wherein a total amount of phosphorous (P) and sulfur (S) as impurities is 0.03 mass % or less, the remaining is iron (Fe), and the bolt comprises an iron based oxide film with a film thickness of 3 ?m or greater and 20 ?m or less on the surface thereof. The bolt has excellent delayed fracture resistance and reliably provides a fastening axial force.

Abstract: It has been unexpected found that the machinability and corrosion resistance of powder metal parts can be greatly improved by incorporating calcium aluminoferrite powder, such as naturally occurring brownmillerite powder (Ca2(Al,Fe)2O5), into the part. Improved machinability is of enormous value in manufacturing countless parts where it is necessary or desirable to machine the part after it has been sintered, such as is frequently the case with gears, rotors and sprockets. In the practice of this invention, calcium aluminoferrite powder can also be incorporated into parts which will not necessarily be machined for the sole purpose of attaining better corrosion resistance. Surprisingly, the incorporation of the calcium aluminoferrite powder into such parts does not significantly compromise the strength, durability, or wear characteristics of the part and generally improves the service life of the part by providing better corrosion resistance.

Abstract: A pore-free ceramic is provided that has a high modulus of elasticity and a low coefficient of thermal expansion. A process for producing a corresponding ceramic is also provided. The pore free ceramic is a dimensionally stable substrate material in applications subjected to temperature gradients including semiconductor manufacture.

Abstract: A transparent substrate with a laminated film, which comprises a transparent substrate and a laminated film formed on at least one surface of the transparent substrate, wherein the laminated film has a first dielectric layer, a crystallinity-improving layer, a functional layer and a second dielectric layer in this order from the transparent substrate side, the crystallinity-improving layer contains ZrNx (wherein x is higher than 1.2 and at most 2.0), the functional layer contains at least one metal nitride selected from the group consisting of titanium nitride, chromium nitride, niobium nitride, molybdenum nitride and hafnium nitride, and the concentration of oxygen atoms at a boundary between the crystallinity-improving layer and the functional layer, is at most 20 atom %.

Abstract: Special usage steels, particularly those intended to be in contact with combustion fumes, are described. Tubular components produced based on such steels are also described. The steel both is resistant to the coking phenomenon and has improved mechanical performances. The steel contains in percentage by weight from 0.08 to 0.15% carbon, from 0.4 to 0.8% manganese, from 1.5 to 2.5% silicon, from 0.5 to 2% copper, from 8 to 10% chrome, from 0.5 to 3% nickel, from 0.01 to 0.07% nitrogen, from 0.8 to 1.1% molybdenum, with the remainder being iron and impurities.

Abstract: A complex composite particle is made of a coal dust and binder composite that is pyrolyzed. Constituent portions of the composite react together causing the particles to increase in density and reduce in size during pyrolyzation, yielding a particle suitable for use as a proppant or in a composite structure.

Abstract: This coated steel member includes: a steel sheet substrate having a predetermined chemical composition; and a coating formed on a surface of the steel sheet substrate and containing Al and Fe, in which the coating has a low Al content region having an Al content of 3 mass % or more and less than 30 mass % and a high Al content region formed on a side closer to a surface than the low Al content region and having an Al content of 30 mass % or more, a maximum C content of the high Al content region is 25% or less of a C content of the steel sheet substrate, a maximum C content of the low Al content region is 40% or less of the C content of the steel sheet substrate, and a maximum C content in a range from an interface between the steel sheet substrate and the coating to a depth of 10 ?m on a side of the steel sheet substrate is 80% or less of the C content of the steel sheet substrate.