A method of additive manufacturing a structure having integrated passages is provided. In one aspect, the method includes forming first and second parts, each part having a near net shape. The first and second parts are formed by moving a friction stir tool configured to deposit a filler material. An inner surface of each part can be machined to form a generally smooth surface. The first and the second parts are joined to form a structure. The structure is machined to form a generally smooth outer surface. The method includes machining a plurality of grooves extending into the generally smooth outer surface of the structure. A tube is placed into each of the plurality of grooves and a layer of material is deposited to secure the tubes within the plurality of grooves. The method can include machining the outer surface to a predetermined shape.

This laser welding method involves superposing a first terminal and a second terminal which are composed of a metal material containing copper and aluminum as a main component, and welding and joining the first terminal and the second terminal with a laser, the method including a laser irradiation step for irradiating, with a laser, along the edge of the first terminal, each of a first upper surface which is the opposite surface to a surface of the first terminal superposed on the second terminal, and a second upper surface which is the surface on the same side, of the second terminal superposed on the first terminal, wherein in the laser irradiation step, laser is emitted a plurality of times under the conditions for heat transfer mode welding.

A brazing, monolayer, aluminum-alloy material has a chemical composition composed of Si: 1.5 mass % or more and 3.5 mass % or less, Fe: 0.05 mass % or more and 2.00 mass % or less, Mn: 0.1 mass % or more and 2.0 mass % or less, Mg: 0.005 mass % or more and 0.500 mass % or less, and Bi: 0.010 mass % or more and 0.500 mass % or less, the remainder being Al and unavoidable impurities; and has a metallographic structure in which MgBi-series compounds are dispersed in an Al matrix. The surface-area ratio of the above-mentioned MgBi-series compounds in any arbitrary cross section is 0.05% or more.

The present disclosure provides methods for preparing an extruded product from a solid billet. The methods can include providing an as-cast billet for extrusion; applying a simultaneous rotational shear and axial extrusion force to the as-cast billet to plasticize the as-cast billet; and extruding the plasticized as-cast billet with an extrusion die to form an extruded product. Methods for preparing extruded products from billets can also include: providing a billet for extrusion; while maintaining a majority of the billet below 100 C., applying a simultaneous rotational shear and axial extrusion force to one end of the billet to plasticize the one end of the billet; and extruding the plasticized one end of the billet with an extrusion die to form an extruded product. Methods for preparing an extruded product from a billet can also include providing a billet for extrusion; applying a simultaneous rotational shear and axial extrusion force to the billet to plasticize the billet; extruding the plasticized billet with an extrusion die to form an extruded product; and artificially aging the extruded product for less than the ASTM recommended amount of time.

A pre-coated steel substrate wherein the coating including at least one titanate and at least one nanoparticle; a method for the manufacture of an assembly; a method for the manufacture of a coated steel substrate and a coated substrate substrate. It is particularly well suited for construction, shipbuilding and offshore industries.

A method includes producing a functional structure on an aluminum surface with a local laser treatment of an aluminum surface. The local laser treatment is carried out with a pulsed laser system having a pulse duration of from 10 ns to 100 ns. The average power of the pulsed laser system is less than 5 kW.

Provided is a metal jointed body, joined by solid-phase joining in the atmosphere, in which no protrusion of molten joining material occurs, that improves dimensional stability. A metal jointed body is formed by (A) making Ag films of two metal laminated bodies opposed to each other, the metal jointed body being configured by sequentially laminating a Zn film and an Ag film on an Al substrate serving as a member to be joined, and (B) bringing the Ag films into contact with each other, then (C) heating is performed while pressurizing, and closely adhering and solid-phase joining the Ag films to each other. The completed metal jointed body is a portion where AlAg alloy layers are provided on both sides of an AgZnAl alloy layer to join the Al substrates to each other.

A method for analyzing a weld seam formed by a laser welding process includes thermally exciting the weld seam by radiating at least one laser pulse onto the weld seam, acquiring a decay characteristic of a thermal radiation emitted by the weld seam, and determining whether a welding defect is present based on an evaluation of the acquired decay characteristic.

A temperature control plate for battery cooling and a method for producing a temperature control plate. The temperature control plate has a plate body having first and second plate elements, and a connecting piece for a temperature control fluid. The connecting piece has an outer flange and a plug-in section, wherein the outer flange abuts an outside of the first plate element and the plug-in section is positioned in a mounting opening of the first plateelement. The mounting opening is in a formation in the first plateelement, wherein a circumferential edge of the mounting opening is displaced relative to a plate plane of the first plateelement. An end section of the plug-in section is formed into an inner flange, wherein an annular groove is formed between the outer and inner flanges, and the circumferential edge of the mounting opening lies in the annular groove.

A method of joining dissimilar material pipes includes applying a brazing metal filler to an end of a first pipe, press-inserting the end of the first pipe, with the brazing metal filler applied, into a second pipe, and plastically deforming and joining overlapping plastic deformation portions of the first pipe and the second pipe in a joint assembly, where the first pipe is fitted to the second pipe. This method offers joined dissimilar material pipe, which provides improved sealing capacity and perform well under high pressure and extremely low temperatures.