Abstract: An alpha-beta titanium alloy is provided. The alpha-beta titanium alloy composition includes concentrations of Al from about 4.7 wt. % to about 6.0 wt. %; V from about 6.5 wt. % to about 8.0 wt. %; Si from about 0.15 wt. % to about 0.6 wt. %; Fe up to about 0.3 wt. %; O from about 0.15 wt. % to about 0.23 wt. %; Ti and incidental impurities as a balance. The alpha-beta titanium alloy may have a solution treated and aged microstructure and an elongation of at least about 10% at room temperature. Also, the alpha-beta titanium alloy may have an Al/V ratio from about 0.65 to about 0.8, the Al/V ratio being equal to the concentration of the Al divided by the concentration of the V in weight percent.

Abstract: A copper alloy material production method is provided. A copper raw material including not higher than 30 ppm by mass of oxygen is melted to form a molten copper. Not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium is added to the molten copper. After the adding of the titanium, not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium is added.

Abstract: A material which can be used to manufacture components which exhibit high strength and high wear resistance, at the same time possessing reasonable ductility. The material also has cost advantages compared to other potential metal powder solutions. An iron based powder composition which achieves desired microstructure/properties and associated sliding wear resistance with reduced content of expensive alloying ingredients such as admixed elemental Ni and Copper.

Abstract: A delivery system for delivering a plurality of layers of a powder to a three dimensional (3D) printing system for printing at least one 3D object, the delivery system comprising: a rotatable drum having a rounded photosensitive outer surface, a hopper unit comprising a container for storing the powder, wherein the hopper unit is configured to dispense the powder on the photosensitive outer surface of the rotatable drum. The delivery system further comprises a delivery unit comprising a movable delivery plate having a conductive outer surface, an engine for moving the delivery plate to a working chamber of the 3D printing system, one or more charging electrodes configured to charge the rotatable drum, a charging unit configured to charge the delivery plate.

Abstract: A manufacturing process includes depositing a clad layer having a thickness greater than about 0.5 mm (0.02 in) on a surface of the component by hardfacing, and creating a heat affected zone directly below the clad layer due to the depositing. The heat affected zone may be a region of the component where a lowest hardness is lower than a base hardness of the component below the heat affected zone. The method may also include heat treating the component after the deposition such that the lowest hardness in the heat affected zone is restored to within about 15% of the base hardness of the component.

Abstract: A wrought aluminium material with improved damage tolerance while preserving the high strength of the material is disclosed. Furthermore, a cast aluminium material of a precipitation hardenable aluminium alloy is disclosed, the material comprising grains having two distinct zones with a first centre zone enriched in elements capable of reacting peritectically with aluminium and a second zone, surrounding the first zone, enriched in elements capable of reacting eutectically with aluminium.

Abstract: A method for forming a sheet structure includes providing a tool having a formation surface corresponding to a shape of the sheet structure. The method also includes depositing at least one layer of material on the formation surface using a cold-spray deposition technique. The method also includes removing the at least one layer of material from the formation surface to create the sheet structure.

Abstract: There are provided methods and systems for creating multi-phase covetics. For example, there is provided a process for making a composite material. The process includes forming a multi-phase covetic. The forming includes heating a melt including a metal in a molten state and a carbon source to a first temperature threshold to form metal-carbon bonds. The forming further includes subsequently heating the melt to a second temperature threshold, the second temperature threshold being greater than the first temperature threshold. The second temperature threshold is a temperature at or above which ordered multi-phase covetics form in the melt.

Abstract: Methods of selectively cooling and quenching surface regions of high-strength transformation induced plasticity (TRIP) steel are provided. The method may comprise selectively cooling at least one region of an exposed surface of a hot-formed press-hardened component comprising a high-strength steel. Prior to selective cooling, the component has a microstructure comprising ?about 5% by volume retained austenite in a matrix of martensite. The selective cooling is conducted at a temperature of ?about ?40° C. and forms at least one quenched region comprising ?about 2% by volume austenite. The TRIP steel may be zinc-coated and having a surface coating comprising zinc and substantially free of liquid metal embrittlement (LME). Zinc-coated hot-formed press-hardened components, including automotive components, formed from such methods are also provided.

Abstract: A mechanical structural component is a toothed component obtained by performing cold forging and carburizing treatment on a steel having a predetermined chemical composition, in prior austenite grains after the carburizing treatment, an area ratio of crystal grains of 50 ?m or less is 80% or more, and an area ratio of crystal grains exceeding 300 ?m is 10% or less, and a total helix deviation of teeth after the carburizing treatment satisfies Formula (1) (Bmax/L)×103?5??(1) where Bmax is a maximum total helix deviation in all teeth in mm, and L is a face width in mm.

Abstract: In one aspect, methods of making freestanding metal matrix composite articles and alloy articles are described. A method of making a freestanding composite article described herein comprises disposing over a surface of the temporary substrate a layered assembly comprising a layer of infiltration metal or alloy and a hard particle layer formed of a flexible sheet comprising organic binder and the hard particles. The layered assembly is heated to infiltrate the hard particle layer with metal or alloy providing a metal matrix composite, and the metal matrix composite is separated from the temporary substrate. Further, a method of making a freestanding alloy article described herein comprises disposing over the surface of a temporary substrate a flexible sheet comprising organic binder and powder alloy and heating the sheet to provide a sintered alloy article. The sintered alloy article is then separated from the temporary substrate.

Abstract: A method for forming a metallic structure having multiple layers includes providing a main tool having a main formation surface corresponding to a desired shape of a first layer of material. The method also includes depositing the first layer of material on the main formation surface using a cold-spray deposition technique. The method also includes positioning a secondary tool having a secondary formation surface in a portion of a first volume defined by a first surface of the first layer of material. The method also includes depositing a second layer of material on the secondary formation surface using the cold-spray deposition technique. The method also includes removing the secondary tool such that the first volume is positioned between the first layer of material and the second layer of material.

Abstract: The present invention relates to a process for producing shaped articles composed of refractory metals.

Abstract: A Ni—Cr—Fe-based alloy brazing filler material to which Cu is added, and which has a low melting temperature, and is inexpensive and excellent in corrosion resistance and in strength, for use in manufacture of stainless-steel heat exchangers or the like, specifically, a Ni—Cr—Fe-based alloy brazing filler material, including, in mass %, Cr: 15 to 30%; Fe: 15 to 30%; Cu: 2.1 to 7.5%; P: 3 to 12%; and Si: 0 to 8%; and the balance being Ni and unavoidable impurities, wherein the total content of Cr and Fe is 30 to 54%, and the total content of P and Si is 7 to 14%.

Abstract: In some embodiments, a magnetic body 1 has soft magnetic alloy grains 11 that contain Fe, M (M is a metal element that oxidizes more easily than Fe), and S, as well as oxide films 12 produced by partial oxidization of the soft magnetic alloy grains 11, wherein the magnetic body 1 has its adjacent soft magnetic alloy grains 11 bonded together at least partially through the oxide films 12, and contains Fe by 92.5 to 96 percent by weight and S by 0.003 to 0.02 percent by weight. The magnetic body can have high levels of both magnetic permeability and volume resistivity, to meet the demand for smaller, higher-performance electronic components.

Abstract: Low-oxygen clean steel is provided containing C, Si, Mn, P, and S as chemical components, and further containing, by mass %, 0.005% to 0.20% of Al, greater than 0% to 0.0005% of Ca, 0.00005% to 0.0004% of REM, and greater than 0% to 0.003% of T.O, wherein the REM content, the Ca content, and the T.O content satisfy 0.15?REM/Ca?4.00 and Ca/T.O?0.50, nonmetallic inclusions which have a maximum predicted diameter of 1 ?m to 30 ?m measured using an extreme value statistical method under the condition in which a prediction area is 30,000 mm2, and contain Al2O3 and REM oxide are dispersed in the steel, an average proportion of the Al2O3 in the nonmetallic inclusions is greater than 50%, the REM is one or two or more of rare-earth elements La, Ce, Pr, and Nd, and the steel is Al-deoxidized steel or Al—Si-deoxidized steel.

Abstract: The invention relates to a method for manufacturing a thin sheet having a thickness of 0.5 to 3.3 mm and an essentially non-recrystallized structure made of aluminum-based alloy.

Abstract: A powder or powder granulate includes a chromium content >80 Ma %, which contains 2 to 20 Ma % iron, optionally up to 5 Ma % dopant, and optionally up to 2 Ma % oxygen, wherein the chromium-containing particles at least partially have pores. The powder displays significantly improved compression behavior and allows the production of sintered components having a very homogeneous distribution of the alloy elements.

Abstract: A quench and temper steel alloy is disclosed having the following composition in weight percent. C 0.2-0.5 Mn 0.1-1.0 Si 0.1-1.2 Cr ??9-14.5 Ni 2.0-5.5 Mo 1-2 Cu ??0-1.0 Co 1-4 W 0.2 max. V 0.1-1.0 Ti up to 0.5 Nb ??0-0.5 Ta ??0-0.5 Al ??0-0.25 Ce ??0-0.01 La ??0-0.01 The balance of the alloy is iron and the usual impurities including not more than about 0.01% phosphorus, not more than about 0.010% sulful, and not more than about 0.10% nitrogen. A quenched and tempered steel article made from this alloy is also disclosed. The steel article is characterized by a tensile strength of at least about 290 ksi, a fracture toughness (kIc) of at least about 65 ksi, good resistance to general corrosion, and good resistance to pitting corrosion.

Abstract: A timepiece or piece of jewellery made of a nickel free and cobalt free gold alloy, the composition of which includes by weight between 75% and 77.5% gold, between 1.2 and 1.6% palladium, and between 20.1 and 23.8% copper.