Described herein are methods for and devices prepared from welding shape memory alloys. The weld produced from the present methods can approach 100% joint strength relative the ultimate tensile strength of the shape memory alloy, and are substantially free of heat affected zones and brittle intermetallics.

Described herein are methods for and devices prepared from welding shape memory alloys. The weld produced from the present methods can approach 100% joint strength relative the ultimate tensile strength of the shape memory alloy, and are substantially free of heat affected zones and brittle intermetallics.

A coil to magnetic-pulse weld tubular parts including an active portion having an active surface which is arrangeable to face an area of overlap between the tubular parts. The active surface defines a tubular opening oriented in an axial direction. The active surface has a predetermined axial length. The tubular opening has, in the axial direction, along the axial length of the peripheral surface, two sections having a constant cross-section. The two sections are connected therebetween by a section having a continuously increasing cross-section. A related magnetic-pulse welding method is also provided herewith.

A coil to magnetic-pulse weld tubular parts including an active portion having an active surface which is arrangeable to face an area of overlap between the tubular parts. The active surface defines a tubular opening oriented in an axial direction. The active surface has a predetermined axial length. The tubular opening has, in the axial direction, along the axial length of the peripheral surface, two sections having a constant cross-section. The two sections are connected therebetween by a section having a continuously increasing cross-section. A related magnetic-pulse welding method is also provided herewith.

A coil to magnetic-pulse weld parts including an active portion, one surface of which is referred to as an active surface, is arrangeable to face one of the parts at an area of overlap between the parts. The active surface has, across the width L.sub.b thereof, an angled profile such that the active surface has a non-zero angle in relation to a plane. At least at the working area, the part closest to the active surface extends along the plane, when the parts are positioned at the coil for welding. A related magnetic-pulse welding method is also provided herewith.

A coil to magnetic-pulse weld parts including an active portion, one surface of which is referred to as an active surface, is arrangeable to face one of the parts at an area of overlap between the parts. The active surface has, across the width L.sub.b thereof, an angled profile such that the active surface has a non-zero angle in relation to a plane. At least at the working area, the part closest to the active surface extends along the plane, when the parts are positioned at the coil for welding. A related magnetic-pulse welding method is also provided herewith.

The present disclosure discloses a battery connection sheet, including: a first part, including a first metal sheet, a first buffer portion and a first connection portion, and a second part, including a second metal sheet connected with the first connection portion via electromagnetic pulse welding.

The present disclosure discloses a battery connection sheet, including: a first part, including a first metal sheet, a first buffer portion and a first connection portion, and a second part, including a second metal sheet connected with the first connection portion via electromagnetic pulse welding.

A method and assembly for preventing corrosion between two work pieces. At least a portion of a neck portion of a second end portion of an end piece is disposed within a hollow portion in a first end portion of a drive shaft tube. The inner surface of the first end portion of the drive shaft tube is magnetic pulse welded to a first tapered portion of the neck portion of the end piece. A coating and a sacrificial material is applied over an interface between an end surface of said first end portion of said drive shaft and said end piece defining a gap. The coating and sacrificial material is then leveled and a shrink-wrap material is disposed radially outboard from the gap. Finally, heat is applied to the shrink-wrap material sealing said gap.

A method and assembly for preventing corrosion between two work pieces. At least a portion of a neck portion of a second end portion of an end piece is disposed within a hollow portion in a first end portion of a drive shaft tube. The inner surface of the first end portion of the drive shaft tube is magnetic pulse welded to a first tapered portion of the neck portion of the end piece. A coating and a sacrificial material is applied over an interface between an end surface of said first end portion of said drive shaft and said end piece defining a gap. The coating and sacrificial material is then leveled and a shrink-wrap material is disposed radially outboard from the gap. Finally, heat is applied to the shrink-wrap material sealing said gap.