Multi-material tooling and methods of making multi-material tooling are provided. The multi-material tooling includes a core formed of a first material having a hardness (Rockwell C scale) of up to 30 HRC, and a shell layer adjacent to the core. The shell layer is formed of a second material having a hardness of 33 HRC to 70 HRC. The method of making multi-material includes depositing a first layer of a first material using an additive manufacturing technique to form a core. The first material that forms the core has a hardness of up to 30 HRC. The method also includes depositing a second layer of a second material to form a shell layer adjacent to the core. The second material that forms the shell layer has a hardness of 33 HRC to 70 HRC.

The application discloses a coating material for fabricating rare earth magnets and a method using the coating material to prepare neodymium-iron-boron (NdFeB) magnets having high coercive force. The coating material includes: alloy powder A and low-melting-point metal powder B. The alloy powder A is heavy rare earth element R powder, or rare earth-metal alloy (RM) powder, or rare earth-metal-hydrogen alloy (RMH) powder. The heavy rare earth elements are Dy and/or Tb, metal is Fe or Co, or an alloy of Fe and Co, and H is hydrogen element. The low-melting-point metal powder B is one or two of Zn, Al, and Ga. The preparation method includes the following steps: the coating material is mixed into a slurry, and the slurry is coated on the surface of NdFeB magnet, and then apply a two-stage diffusion heat treatment to the magnet, followed by an annealing process to obtain a high-coercivity NdFeB magnet.

Provided is a photosintering composition including: a cuprous oxide particle comprising at least one additive element selected from the group consisting of tin, manganese, vanadium, cerium, iron and silver; a metal particle having a volume resistivity at 20° C. of 1.0×10.sup.−3 ω.Math.cm or less; and a solvent.

A process for additive manufacture of an article including conjoined first and second metals, wherein the first metal includes one of steel and titanium and the second metal includes another of the steel and the titanium. The process comprises arranging an interface layer of a third metal on a substrate of the first metal, wherein the third metal is capable of forming an alloy with the first metal and capable of forming an alloy with the second metal. The process further comprises supplying a consumable form of the second metal to a locus of the interface layer and heating the locus of the interface layer in an non-reactive environment. In this process, the heating fuses the consumable form of the second metal to render a fused form of the second metal and joins the fused form of the second metal to the interface layer.

A three-dimensional shaped article producing powder according to the present disclosure includes a plurality of metal particles, and is used for producing a three-dimensional shaped article by laminating a plurality of layers while joining the metal particles to one another by irradiation with a laser beam, wherein as the metal particles, first metal particles and second metal particles having a composition different from the first metal particles are included. A content ratio of the first metal particles in the three-dimensional shaped article producing powder is higher than a content ratio of the second metal particles, and a reflectance of a peak wavelength component of the laser beam at 25 C. with respect to the first metal particles is smaller than a reflectance of a peak wavelength component of the laser beam at 25 C. with respect to the second metal particles.

A three-dimensional shaped article producing powder according to the present disclosure includes a plurality of metal particles, and is used for producing a three-dimensional shaped article by laminating a plurality of layers while joining the metal particles to one another by irradiation with a laser beam, wherein as the metal particles, first metal particles and second metal particles having a composition different from the first metal particles are included. A content ratio of the first metal particles in the three-dimensional shaped article producing powder is higher than a content ratio of the second metal particles, and a reflectance of a peak wavelength component of the laser beam at 25 C. with respect to the first metal particles is smaller than a reflectance of a peak wavelength component of the laser beam at 25 C. with respect to the second metal particles.

The present invention relates to a method for manufacturing a heterogeneous composite material thin plate, and a heterogeneous composite material thin plate manufactured thereby, the method comprising the steps of: (a) manufacturing a composite powder by ball milling an aluminum or aluminum alloy powder and a carbon nanotube powder; (b) manufacturing a multilayer billet comprising the composite powder, and comprising a core layer and two or more shell layers that encompass the core layer, the core layer being formed of the composite powder or an aluminum alloy, the shell layers excluding the outermost shell layer and being formed of the composite powder, and the outermost shell layer being formed of (i) an aluminum or aluminum alloy powder or (ii) the composite powder; (c) manufacturing an extruded material by extruding the multilayer billet; and (d) rolling the extruded material to mold same into a thin plate shape.

Described herein are methods of forming a neutron shielding material. Such material may comprise a powder blend comprising a first component comprising a blend of a first metal particle and a first ceramic particle; and a second component comprising a reinforcing chip, the reinforcing chip comprising a second ceramic particle dispersed within a chip metal matrix.

A method of reinforcing a metallic material includes adding graphene to an alcohol solution; subjecting the alcohol solution containing graphene to sonication; mixing a metal powder with the alcohol solution containing graphene; milling the metal powder and alcohol solution containing graphene mixture; drying the metal powder and alcohol solution containing graphene mixture to form a composite powder; subjecting the composite powder to a densification process followed by a hot isostatic pressing treatment to form a composite material; and molding the composite material by hot extrusion.

Cemented carbide contains first hard-phase particles containing WC, second hard-phase particles which contain carbonitride containing at least Ti and Nb, and a metallic binder phase containing an iron-group element. The second hard-phase particle includes a granular core portion and a peripheral portion which covers at least a part of the core portion. The core portion contains composite carbonitride expressed as Ti.sub.1-X-YNb.sub.XW.sub.YC.sub.1-ZN.sub.Z, where Y is not smaller than 0 and not greater than 0.05 and Z is not smaller than 0.3 and not greater than 0.6. The peripheral portion is different in composition from the core portion.