Abstract: The invention discloses a method for synergistically preparing ferrosilicon alloy and glass-ceramics from photovoltaic waste slag and non-ferrous metal smelting iron slag, and belongs to the technical field of collaborative resource utilization of various smelting slag areas. According to the method, the zinc rotary kiln slag and a reduction tempering agent are subjected to batching, mixing and high-temperature melting to form a reduction-state iron-containing material. The iron-containing material and the silicon slag are further subjected to mixed melting, water quenching and sorting to obtain the ferrosilicon alloy and residual waste slag. The residual waste slag is subjected to tempering, melting, molding, annealing and heat treatment to obtain the glass ceramics. According to the method, the ferrosilicon alloy and the glass ceramics are prepared from the silicon slag and the zinc rotary kiln slag, and a collaborative resource utilization target of the regional smelting slag is achieved.

Abstract: The present disclosure relates to a hot-rolled steel sheet utilized as material for heavy machinery, vehicle frames, and the like, and more specifically to a high-strength hot-rolled steel sheet having excellent bendability and low-temperature toughness and a method for manufacturing same.

Abstract: In a metal coated steel sheet, a chemical composition contains, in mass %, at least C: 0.03% to 0.70%, Si: 0.25% to 2.50%, Mn: 1.00% to 5.00%, P: 0.100% or less, S: 0.010% or less, sol. Al: 0.001% to 2.500, N: 0.020% or less, and a balance composed of iron and impurities, a metal structure contains greater than 5.0 vol % of retained austenite and greater than 5.0 vol % of tempered martensite, and satisfies a C content in the retained austenite being 0.85 mass % or more.

Abstract: A titanium-aluminum intermetallic for improving casting fluidity includes the following elements in atomic percentage: Al: 40 at % to 50 at %, Cr: 1 at % to 8 at %, Nb: 1 at % to 8 at %, Mo: 1 at % to 5 at %, Mn: 1 at % to 6 at %, Ni+Si+Fe: 1 at % to 15 at %, B: 0.05 at % to 0.8 at %, and the balance of Ti and inevitable impurities. The titanium-aluminum intermetallic in the present disclosure has more adequate casting fluidity, that is, has better castability.

Abstract: A wrought-able, cobalt-based alloy is disclosed which has extraordinary resistant to high speed/self-coupled sliding wear. This alloy contains about 0.83 wt. % nickel, about 0.125 wt. % nitrogen, about 26.85 wt. % chromium, about 4.58 wt. % molybdenum, about 2.33 wt. % tungsten, about 2.97 wt. % iron, about 0.84 wt. % manganese, about 0.27 wt. % silicon, about 0.065 wt. % carbon, and about 0.11 wt. % aluminum, with the balance cobalt plus impurities.

Abstract: A method for direct reduction of metal oxide-containing starting materials to produce metallized material by contact with hot reduction gas in a reduction unit (1), wherein the product of the direct reduction is discharged from the reduction unit (1) by means of a product discharge device (3) which is flushed with seal gas and from which vent gas is drawn and subsequently de-dusted. The vent gas is de-dusted dry and the content of at least one gaseous constituent is reduced by catalytic conversion or combustion. Also, a device for carrying out the method is disclosed.

Abstract: A method for manufacturing magnetic alloy powder constituted by magnetic grains whose alloy phase is coated with an oxide film, includes: providing a material powder for magnetic alloy whose Fe content is 96.5 to 99 percent by mass and which also contains Si and at least one of non-Si elements (element M) that oxidize more easily than Fe; and heat-treating the material powder and thus forming an oxide film on a surface of each grain constituting the material powder, to obtain a magnetic alloy powder, wherein a content of Fe in the alloy phase is higher than in the material powder; and at a location in the oxide film where its content of Si is in element distributions in a film thickness direction is highest, the content of Si is higher than a content of Fe, and also higher than its content of element M, at the location.

Abstract: Provided is a high strength steel sheet having an excellent high-temperature elongation characteristic. The sheet includes, by weight %, 0.4-0.9% of C, 0.01-1.5% of Cr, 0.03% or less (exclusive of 0%) of P, 0.01% or less (exclusive of 0%) of S, 0.01% or less (exclusive of 0%) of N, 0.01% or less (exclusive of 0%) of sol. Al, and a balance of Fe and inevitable impurities, and comprises at least one among 2.1% or less (exclusive of 0%) of Mn and 1.6% or less (exclusive of 0%) of Si; the sheet has a microcrystalline structure including pearlite having an area fraction of 80% or more and ferrite having an area fraction of 20% or less; and the pearlite includes cementite having a major axis length of 200 nm or shorter.

Abstract: A high thermal conductive casting aluminum alloy is provided as an Al—Ni—Fe-based alloy, including, based on an entire alloy of 100 wt %, nickel (Ni) added at 1.0 to 1.3 wt %, iron (Fe) added at 0.3 to 0.9 wt %, and aluminum (Al) added as a balance.

Abstract: A hot-dip coated steel substrate coated with a layer of Sn directly topped by a zinc or an aluminum based coating is provided, the steel substrate having the following chemical composition in weight percent: 0.10?C?0.4%, 1.2?Mn?6.0%, 0.3?Si?2.5%, Al?2.0%, and on a purely optional basis, one or more elements such as P<0.1%,Nb?0.5%, B?0.005%, Cr?1.0%, Mo?0.50%, Ni?1.0%, Ti?0.5%, the remainder of the composition making up of iron and inevitable impurities resulting from the elaboration, the steel substrate further having between 0.0001 and 0.01% by weight of Sn in the region extending from the steel substrate surface up to 10 ?m.

Abstract: The present invention concerns the use of a magnesium-including compound as binder for producing metallic ore fluxed pellets, in particular iron ore fluxed pellets, said magnesium-including compound comprising semi-hydrated dolime fitting the general formula aCa(OH)2·bMg(OH)2·cMgO, a, b, and c being weight fractions wherein the weight fraction b of Mg(OH)2 is between 0.5 and 19.5 % by weight with respect to the total weight of said semi-hydrated dolime.

Abstract: A high-strength steel sheet includes a steel structure with: ferrite being 35% to 80%, martensite being 5% to 35%, and tempered martensite being 0% to 5% in terms of area fraction; retained austenite being 8% or more in terms of volume fraction; an average grain size of: the ferrite being 6 ?m or less; and the retained austenite being 3 ?m or less; a value obtained by dividing an area fraction of blocky austenite by a sum of area fractions of lath-like austenite and the blocky austenite being 0.6 or more; a value obtained by dividing, by mass %, an average Mn content in the retained austenite by an average Mn content in the ferrite being 1.5 or more; and a value obtained by dividing, by mass %, an average C content in the retained austenite by an average C content in the ferrite being 3.0 or more.

Abstract: Provided are: a SOUR-resistant heavy-wall steel plate having excellent low-temperature toughness and post-heat treatment characteristics; and a method for manufacturing the same. The SOUR-resistant heavy-wall steel plate of the present invention comprises: in terms of weight %, 0.02-0.06% of C; 0.5% or less of Si (excluding 0%); 0.8-2.0% of Mn; 0.03% or less of P; 0.003% or less of S; 0.06% or less of Al; 0.01% or less of N; 0.005-0.1% of Nb; 0.005-0.05% of Ti; 0.0005-0.005% of Ca; one or more selected from 0.05-0.5% of Ni, 0.05-0.5% of Cr, 0.02-0.4% of Mo, and 0.005-0.1% of V; and the remainder Fe and unavoidable impurities, wherein the heavy-wall steel plate satisfies relational expressions 1-3, and has a percent ductile fracture of 85% or more in the drop weight tear test (DWTT) at ?20° C.

Abstract: A composite aluminum alloy plate for a case of an electronic product contains: a first aluminum alloy plate and a second aluminum alloy plate. The first aluminum alloy plate is made of first aluminum alloy material, and the second aluminum alloy plate is made of second aluminum alloy material. The first aluminum alloy material is selected from any one of 6XXX series aluminum alloy to 8XXX series aluminum alloy, and the second aluminum alloy material is selected from any one of 1XXX series aluminum alloy to 5XXX series aluminum alloy. The first and second aluminum alloy plates are stacked and compounded by hot rolling so as to produce the composite aluminum alloy plate having an external layer, an intermediate layer, and an internal layer. Thereafter, the composite aluminum alloy plate is laminated by cold rolling and is stabilized in a tempering treatment.

Abstract: A spiral timepiece spring with a two-phase structure, made of a niobium and titanium alloy, and method for manufacturing this spring, including: producing a binary alloy containing niobium and titanium, with: niobium: the remainder to 100%; titanium: strictly greater than 60% and less than or equal to 85% by mass of the total, traces of components from among O, H, C, Fe, Ta, N, Ni, Si, Cu, Al; applying deformations alternated with heat treatments until a two-phase microstructure is obtained comprising a solid solution of niobium with ?-phase titanium and a solid solution of niobium with ?-phase titanium, the ?-phase titanium content being greater than 10% by volume, wire drawing to obtain wire able to be calendered; calendering or insertion into a ring to form a mainspring, in a double clef shape before it is wound for the first time, or winding to form a balance spring.

Abstract: A high-strength austenite-based high-manganese steel material and a manufacturing method for the same, the steel material comprising: manganese (Mn): 20 to 23 wt %, carbon (C): 0.3 to 0.5 wt %, silicon (Si): 0.05 to 0.50 wt %, phosphorus (P): 0.03 wt % or less, sulfur (S): 0.005 wt % or less, aluminum (Al): 0.050 wt % or less, chromium (Cr): 2.5 wt % or less, boron (B): 0.0005 to 0.01 wt %, nitrogen (N): 0.03 wt % or less, and a balance of iron (Fe) and other inevitable impurities, wherein stacked defect energy (SFE) represented by the following relationship 1 is 3.05 mJ/m2 or more, and a microstructure comprises 95 area % or more (including 100 area %) of austenite, and comprises 6 area % or more of strain grain boundaries in an austenite recrystallized grain, is provided. SFE(mJ/m2)=?24.2+0.950*Mn+39.0*C?2.53*Si?5.50*Al?0.765*Cr??[Relationship 1] where Mn, C, Cr, Si, and Al denote weight percent of respective components.

Abstract: A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.

Abstract: A method for applying a composition to a substrate, and a downhole component, of which the method includes thermal spraying a layer of the composition onto the substrate, the substrate being provided by a downhole component, the layer resulting from the thermal spraying having a thickness of at least about 0.10 inches and being configured to remain bonded to the downhole component when used downhole in a well, the composition being chromium-free.

Abstract: Provided are a cryogenic steel plate and a method for manufacturing the same, the cryogenic steel plate comprising, in wt %, 0.04 to 0.08% carbon (C), 8.9 to 9.3% nickel (Ni), 0.6 to 0.7% manganese (Mn), and 0.2 to 0.3% silicon (Si), and 50 ppm or less of P, 10 ppm or less of S, and the remainder in iron (Fe) and various unavoidable impurities, and the microstructure at a ¼t location of the steel plate, where t is a thickness of the steel plate, comprising, in % surface area, 10% or more of tempered bainite, 10% or less of residual austenite, and the remainder of tempered martensite.

Abstract: The present invention addresses the problem, in methods for producing a metal or alloy by reducing a mixture that contains an oxide ore, of providing an oxide ore smelting method with good productivity and efficiency. The present invention is an oxide ore smelting method for producing a metal or alloy by reducing a mixture that contains an oxide ore, the method comprising at least: a mixing step S1 for mixing an oxide ore with a carbonaceous reducing agent; a mixture-molding step S2 for molding the mixture obtained to obtain a mixture-molded body; and a reducing step S3 for heating the mixture-molded body obtained at a specified reducing temperature in a reducing furnace.