A multi-material component joined by a high entropy alloy is provided, as well as methods of making a multi-material component by joining dissimilar materials with high entropy alloys.

A dissimilar material solid phase bonding method is disclosed wherein one member and another member having different compositions are brought into contact with one another by way of an insert material to form an interface (1) to be bonded, at which the one member and the insert material are in contact with one another, and an interface (2) to be bonded, at which the other member and the insert material are in contact with one another; the temperature of the interface (1) to be bonded and the interface (2) to be bonded is raised by means of frictional heat and/or by electrical heating; a bonding pressure (1) is applied substantially perpendicular to the interface (1) to be bonded; a bonding pressure (2) is applied substantially perpendicular to the interface (2) to be bonded; and the bonding pressure (1) and the bonding pressure (2) are set to different values.

A feed axis motor includes a front-side housing fixed to an end face of a stator core. The stator core is formed of a material with iron as a main component. The front-side housing is formed of a material with aluminum as a main component. The stator core and the front-side housing are coupled with each other at a welding mark generated by laser welding. The welding mark extends in a circumferential direction so as to cover a line of contact between the stator core and the front-side housing. The welding mark seals the boundary portion between the stator core and the front-side housing.

A vertical bundle air-cooled heat exchanger, a finned tube assembly for an air cooled condenser and method for forming the same, and a system for removing thermal energy generated by radioactive materials. In one aspect, an air cooled condenser sized for industrial and commercial application includes an inlet steam distribution header for conveying steam, a condensate outlet header for conveying condensate, an array of tube bundles each having a plurality of finned tube assemblies having a bare steel tube with an exposed outer surface and a set of aluminum fins brazed directly onto the tube by a brazing filler metal. The steel tubes may be spaced apart by the aluminum fins and have an inlet end fluidly coupled to the inlet steam distribution header and an outlet end fluidly coupled to the outlet header. A forced draft fan may be arranged to blow air through the tube bundles.

A joined body includes: a thin plate including through holes; first members each including: a base portion and a protruding portion inserted into one of the through holes; and a second member placed oppositely to the base portion via the thin plate and made of a material that is of a same kind as a material of the first members. The thin plate is made of a material having a specific gravity smaller than the materials of the first and the second members. The second member and an end portion of the protruding portion are connected together by melt-solidification. A post-joining hardness difference in a range of 30% along a direction orthogonal to a joint interface between the second member and the protruding portion, the range being centered on the joint interface, is equal to or less than 90% of a pre-joining hardness difference.

A method for assembling a sheet (40) and an iron-based metal part (80) comprising a step of fitting a tubular pin (10) which is open at both ends by punching through the sheet (40) with a shank of the pin with the pin being retained (10) by the sheet, wherein a pad is detached from the first sheet (40), and a flange of the pin abuts against the surface of the sheet (40) once the through-punching has been carried out, and the elastic returns of the shank of the pin (10) and the sheet (40) compress the outer surface of the shank, or by overmoulding the pin in the sheet, and subsequently a step of welding a metal tube of the pin (10) to the iron-based metal part (80) by bringing a flee end (24) of the metal tube into contact with the surface of the iron-based metal part (80) by means of electric resistance welding (90).

Disclosed are methods of forming an impact weld between different metal parts. Also disclosed herein are welded products exhibiting high strength. Also disclosed herein are systems for making such welded products.

The dissimilar material joint structure 1 includes a plate member 20, a weld nut 10 on a front surface of the plate member, and a washer 30 on a back surface of the plate member. The weld nut and the plate member are made of dissimilar materials different from each other. The weld nut includes a projection 12 on a bearing surface thereof. The plate member has a bolt through-hole 23 located on a center axis of the weld nut, for passing therethrough a bolt 40 corresponding to the weld nut and a projection through-hole 24 on the periphery of the bolt through-hole. The projection through-hole is penetrable by the projection. The weld nut is not directly welded to the plate member but joined to the plate member by being welded to the washer via the projection penetrating the projection through-hole.

Example illustrations are directed to methods and apparatuses comprising battery cells having weld joints. In an example method, a laser is moved to a shoulder of a battery cell. The method may further include micro welding with the laser a first line segment on the shoulder of the battery cell and moving the laser a distance on the shoulder of the battery cell. The method may also comprise micro welding with the laser a second line segment on the shoulder of the battery cell in response to moving the laser the distance. Example battery cell assemblies, e.g., for a battery pack, may have a battery cell and a weld joint on a shoulder of the battery cell. The weld joint may include a first micro weld line segment and a second micro weld line segment separated by a distance.

The present invention relates generally to laser welding in the manufacture of sheet metal components, such as for example automobile components. More particularly, the present invention relates to a process and a system for forming a localized anti-corrosion surface layer along a laser welded joint (weld bead), subsequent to the laser welding together of sheet metal plates having an anti-corrosion surface layer pre-coat.