Abstract: An alloy composition is provided. The alloy composition includes silicon (Si) at a concentration of greater than or equal to about 0.55 wt. % to less than or equal to about 0.75 wt. %, magnesium (Mg) at a concentration of greater than or equal to about 0.55 wt. % to less than or equal to about 0.75 wt. %, chromium (Cr) at a concentration of greater than or equal to about 0.15 wt. % to less than or equal to about 0.3 wt. %, and a balance of the alloy composition being aluminum (Al). The alloy composition has an intermetallic phase content of less than or equal to about 3 wt. %. Methods of preparing the alloy composition and of processing the alloy composition are also provided.

Abstract: The present disclosure relates to a method for reducing and homogenizing residual stress of a component, which comprises: detecting stress value(s) of regulation portion(s) of the component; placing the component in a container containing a fluid medium so as to immerse the component in the fluid medium; emitting, by an acoustic wave generator, an elastic wave to the fluid medium in a manner of emitting towards the regulation portion(s) of the component, and determining an emitting period of time and a frequency of the elastic wave based on the stress value(s); returning to the step S1 when the emitting period of time has elapsed, until the stress value(s) is stable. The method and the device solve the problems that it is difficult to reduce and homogenize the residual stress on high-precision machined components, complex structural components, thin-walled structural components, and low-stiffness components.

Abstract: A diffusion component for impregnating molten steel with a gas includes a barrier having a first side and a second side, a through-hole formed within the barrier, the through-hole connecting the first side to the second side, and a porous element arranged within the through-hole such that the flow of molten steel passes over the porous element. At least one flow disrupter is arranged relative to the porous element and configured to promote non-laminar flow of molten steel passing through the through-hole.

Abstract: An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. The two-dimensional energy patterning system may be used to control the rate of cooling experienced by each successive additive layer. Accordingly, the system may be used to heat treat the various additive layers.

Abstract: A bonding structure includes: a plurality of carbon nanotubes; a first bonded member, and a first metal sintered compact bonding first end portions of the plurality of carbon nanotubes and the first bonded member, wherein the first metal sintered compact enters spaces between the first end portions of the plurality of carbon nanotubes, and bonds to the plurality of carbon nanotubes while covering side faces and end faces of the first end portions of the plurality of carbon nanotubes.

Abstract: Vitriforming is a method for forming material into complex geometries within a vitreous substance. Liquid material is formed inside the vitreous substance through external forces applied to the vitreous forming medium. This technique can be broken down into four categories of operations: encasement, setup, forming, and extraction. All operations involve a forming medium, and a workpiece. The workpiece can be composed of any material so long as the forming medium is temperature, viscosity, and chemically compatible. The vitreous forming medium translates outside forces into the workpiece to create various geometries. This forming medium can remain a part of the final assembly or get extracted after forming takes place. Workpiece geometry is affected by forming tool geometry, initial setup, heat, and material properties. This process can be used as a fast, efficient means of forming metal or other materials with unique abilities to control material combinations, surface chemistry, texture, and overall geometry.

Abstract: A method is provided for producing a microfiber-reinforced high-strength concrete, comprising a cement matrix with a microfiber addition. The fiber elements have a shape-memory alloy. The method has at least the following steps: training a fiber shape of the fiber elements at a temperature above a transition temperature, wherein the fiber shape allows the fiber elements to latch; cooling the trained fiber elements; plastically deforming the fiber elements from the trained fiber shape into an intermediate form by means of which the fiber elements are prevented from latching; introducing the fiber elements into the cement matrix in order to form a fresh concrete; and casting the fresh concrete and heating the fresh concrete to the transition temperature such that the fiber elements reform into the fiber shape, thereby latching the fiber elements. The invention additionally relates to a microfiber-reinforced concrete which is produced using such a method.

Abstract: The present disclosure aims to provide a bonded magnet having good magnetic properties and a method of preparing the bonded magnet. The present disclosure provides a method of preparing a bonded magnet, including: a first compression step of compressing a magnetic powder having an average particle size of 10 ?m or less while magnetically orienting it to obtain a first molded article; a second compression step of bringing the first molded article into contact with a thermosetting resin having a viscosity of 200 mPa·s or less, followed by compression to obtain a second molded article; and a heat treatment step of heat treating the second molded article.

Abstract: Equipment for the continuous hot dip-coating of a metal strip 9 including an annealing furnace, a tank 2 containing a liquid metal bath 3, a snout connecting the annealing furnace and tank 2, through which the metal strip 9 runs in a protective atmosphere and the lower part of the snout, the sabot 5, is at least partly immersed in the liquid metal bath 3 in order to define with the surface of the bath, and inside this snout, a liquid seal 6, an overflow 7 not connected to the snout, the overflow 7 including at least one tray 8, placed in the vicinity of the strip 9 when entering the liquid metal bath 3 and encompassed by liquid seal 6.

Abstract: The present disclosure relates to a system, apparatus, and method for a cooling water spray pattern for a direct chill casting mold, and more particularly, to a spiral water spray pattern for a direct chill billet casting mold. An example direct chill casting mold includes a mold body defining a mold cavity there through; and a plurality of spray jets arranged proximate an exit of the mold cavity, wherein the plurality of spray jets are angled with respect to the mold cavity such that streams of fluid exiting the plurality of spray jets impinge upon a casting exiting the mold cavity at an angle offset from a centerline of the casting.

Abstract: A multilayered interference pigment containing, in succession: a metal core in the form of a flake, the metal core containing a material selected from gold, silver, palladium, rhodium, ruthenium, platinum, osmium, iridium and an alloy thereof; a first layer of transparent dielectric material; and a second discontinuous metal layer making it possible to both reflect a portion of the light beam and to transmit another portion of this beam onto the metal core.

Abstract: The present disclosure concerns an aluminosilicate having a Blaine fineness of about 500 m2/kg to about 3000 m2/kg and/or a specific surface area of about 4 m2/g to about 20 m2/g, as well as the uses thereof. The present disclosure also comprises a dry cementing composition and a mortar or concrete composition, the compositions comprising said aluminosilicate. The present disclosure also comprises a process for the manufacture of aluminosilicate. The process comprises: roasting a spodumene concentrate in an acid medium; leaching the acidic roast spodumene concentrate so as to obtain a mixture comprising a solid comprising the aluminosilicate and a leachate; and separating the aluminosilicate from the leachate in an acid medium, wherein said aluminosilicate contains a calcium concentration of less than about 5%.

Abstract: The method heats the metal foil made of amorphous soft magnetic material while bringing the metal foil into close contact with a placement surface of a metal base such that the metal foil conforms to the placement surface, to crystallize the amorphous soft magnetic material of the metal foil into nano-crystal soft magnetic material. In the crystallization, the metal foil is heated at a heating temperature to crystallize the amorphous soft magnetic material, the heating temperature being higher than or equal to a crystallization starting temperature at which the amorphous soft magnetic material crystallizes into nano-crystal soft magnetic material and allowing a temperature of the placement surface to be lower than a temperature of the metal foil having temperature rise due to heat generated by self-heating during crystallization, and the heat generated by self-heating of the metal foil during crystallization is absorbed by the base.

Abstract: Disclosed is a magnesium-based cementitious material, preparation method and application thereof. The magnesium-based cementitious material, comprising magnesite, sandstone, and water, wherein: the magnesite is provided with CaO, SiO2, Al2O3, Fe2 O3, and MgO, a mass percentage of the CaO is less than 5%, a mass percentage of SiO2 is less than 5%, a mass percentage of Al2 O3 is less than 5%, a mass percentage of Fe2 O3 is less than 7%, a mass percentage of MgO is between 37% and 50%; the sandstone is provided with SiO2, CaO, Al2 O3, and Fe2O3, a mass percentage of SiO2 is greater than 70%. The beneficial effects of this disclosure are: the cementitious material does not contain MgCl2, which avoids the reduction of the strength of the cementitious material due to the dissolution of MgCl2 in water; the magnesium-based cementitious material of this disclosure is immiscible with water and has strong water resistance.

Abstract: The device according to any of the preceding claims 13 to 19, characterized in that the device is further configured to carry out a method comprising the step of positioning the green sand mold (3), wherein the device is provided with levelling means configured to hold an upper side of the green sand mold (3) during step c in a parallel position in relation to a gravitationally horizontal plane.

Abstract: A particulate material having a body including a dopant contained in the body, the dopant is non-homogenously distributed throughout the body and the body has a maximum normalized dopant content difference of at least 35%.

Abstract: A composition having a plurality of abrasive particles including alumina, the plurality of abrasive particles have mesoporosity with an average meso branching index of at least 55 junctions/microns2 and a median particle size (D50) of at least 5 microns.

Abstract: A combined continuous casting and endless rolling plant for a metal strip, comprising—a continuous casting line (1) for casting a slab;—a first rolling mill (6) for roughing the slab and for obtaining a transfer bar;—a second rolling mill (11) for finishing the transfer bar and for obtaining a strip;—a third rolling mill (18), comprising at least two first rolling stands (17), for further reducing the thickness of the strip;—accumulation means (20) of the strip, downstream of said third rolling mill (18), comprising at least one first high-capacity reel (37, 37?) dimensioned to wind and unwind a coil weighing from 80 to 250 tons and/or up to 6 meters in diameter, named mega coil;—flying cutting means (13), arranged between said third rolling mill (18) and said accumulation means (20), configured to cut the strip after the mega roll has been wound on the at least one first reel (37, 37?);—a cutting and winding line (22), downstream of said accumulation means (20), for cutting the strip of the mega coil and win

Abstract: A curing accelerator composition for building chemical mixtures comprises a mineral constituent and a polymeric water-soluble dispersant. The mineral constituent comprises a semi-ordered calcium silicate hydrate having an apparent crystallite size of 15 nm or less and less than 35% by weight of crystalline phases other than the semi-ordered calcium silicate hydrate. The composition displays a more pronounced accelerating effect than comparative compositions in which the mineral component comprises a calcium silicate hydrate having a higher degree of crystallinity.

Abstract: A flaskless molding machine includes: an upper sand tank storing the mold sand to be supplied to the upper molding space; a first lower sand tank storing the mold sand to be supplied to the lower molding space, and having a first communication port for discharging the stored mold sand; a second lower sand tank having a second communication port capable of communicating with the first communication port of the first lower sand tank, and storing the mold sand supplied from the first lower sand tank and to be supplied to the lower molding space; at least one first guide member extending in a vertical direction, and guiding the upper flask, the lower flask and the second lower sand tank in the vertical direction; and a second guide member extending in the vertical direction, and guiding the first lower sand tank in the vertical direction.