A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.

Embodiments of golf club face plates with internal cell lattices are presented herein. Other examples and related methods are also disclosed herein.

This disclosure describes various configurations and components for bimetallic and trimetallic claddings for use as a wall element separating nuclear material from an external environment. The cladding materials are suitable for use as cladding for nuclear fuel elements, particularly for fuel elements that will be exposed to sodium or other coolants or environments with a propensity to react with the nuclear fuel.

Embodiments of golf club face plates with internal cell lattices are presented herein. Other examples and related methods are also disclosed herein.

A first method of forming an object (400) includes wrapping foil around a preform (305) to provide a multi-layered structure including a plurality of layers of wrapped foil, and diffusion bonding the plurality of layers and the preform (305) together to form the object (400). A second method of forming an object includes wrapping foil around a preform (305) to provide a multi-layered structure comprising a plurality of layers of wrapped foil, removing the preform (305) from the multi-layered structure, and diffusion bonding the plurality of layers together to form the object (400). A third method of forming an object includes stacking a plurality of layers of foil to provide a multi-layered structure, diffusion bonding the plurality of layers together, and shaping the diffusion bonded multi-layered structure to form the object (400).

A method for producing a steel plate member according to an example aspect of the present disclosure includes heating first and second steel plates and press-forming the heated first and second steel plates while sandwiching the first and second steel plates between an upper die and a lower die and cooling the first and second steel plates. In the press-forming, end parts of the first and second steel plates are overlapped, and the overlapped end parts are pressure-welded by the press-forming.

A method and a device for manufacturing a structural and/or acoustic panel for a nacelle of an aircraft propulsion assembly involves heating, by producing electromagnetic radiation, at least one skin of the structural and/or acoustic panel in such a way as to assemble this skin with a cellular structure of the structural and/or acoustic panel, by diffusion brazing or welding. This heating device can also be used to shape the skin to the cellular structure prior to assembly.

A joining apparatus includes a table, a pressurizing mechanism, a laser light source that emits laser light, and a controller. The table has permeability to the laser light. Two joining targets are to be placed on the table while a first metal layer and a second metal layer face each other. The pressurizing mechanism includes a diaphragm, and is capable of applying pressure to a back surface of the joining target using the diaphragm from an opposite side to the table. The controller brings the first metal layer and the second metal layer into contact with each other by applying pressure to the back surface of the joining target while the two joining targets are placed on the table, and while maintaining the resultant state, applies the laser light to a place of contact between the first metal layer and the second metal layer through the table.

A method of forming a diffusion bonded joint comprises the steps of: providing a first component having a first faying surface; providing a second component having a second faying surface; applying a lamellar coating to at least one of the first faying surface and the second faying surface; and bringing the first and second faying surfaces into contact in a diffusion bonding operation to form the diffusion bonded joint.

The inventive concept relates to a method for manufacturing a metal based frame comprising the steps of: providing a first element (202) comprising a first element inner enveloping wall (204) surrounding an interior volume; providing a second element (210) having a second element outer wall (212), a second element inner wall (213), and a third element (220) having a third element outer wall (222), a third element inner wall, wherein the second element inner wall (213)and the third element inner wall each surrounds a free space (215); arranging the second element (210) and the third element (220) in the interior volume (208) such that an intermediate space (230) having an access opening (232) is formed between the first element inner enveloping wall (204) and the second element outer wall (212) and the third element outer wall (222) in a predetermined pattern; arranging a plurality of pieces of a wrought material (250) in the intermediate space (230); providing a closing member (240) arranged such that it covers at least the access opening (232) of the intermediate space (230), whereby the first element (202), the second element (210), the third element (220), the plurality of pieces of a wrought material (250), and the closing member (240) form an assembled frame arrangement (200); removing gas from the intermediate space; subjecting the assembled frame arrangement to a hot pressing process for a predetermined time at a predetermined pressure and a predetermined temperature such that at least the plurality of pieces of a wrought material bond metallurgically to each other, to form the metal based frame.