Nissan Motor Company Limited

Sadao Yanagida

Hiroshi Sakurai

Shigeyuki Nakagawa

Masayuki Inoue

Kenji Miyamoto

Kenji Kanamori

Akio Hirose

Minoru Kasukawa

Fumihiko Gejima

Tetsuji Morita

Akira Fukushima

Masao Aihara

Chika Sugi

Disclosed herein are bonded structures and methods of forming the same. One embodiment of a bonded structure comprises first and second metallic layers and a bonding interface between the first and second metallic layers formed by diffusion and comprising a layer of at least one intermetallic compound. The intermetallic compound layer is formed in an area 52% or greater of an area of the bonding interface and has a thickness of 0.5 to 3.2 &#x3bc;m.

Bonded structure of dissimilar metallic materials and method of joining dissimilar metallic materials

In joining a magnesium alloy material(first material) and a steel material (second material), a zinc-plated steel plateplated with zinc (metal C) is used as a steel material, Al (metal D) is added to the magnesium alloy material. Next, eutectic melting of Mg and Zn is caused so as to remove a product produced by the eutectic melting with an oxide filmand impurities from a joint interface. Moreover, an Al&#x2014;Mg system intermetallic compound such as AlMgand an Fe&#x2014;Al system intermetallic compound such as FeAlare produced, whereby regenerated surfaces of both materialsandare joined via a compound layercontaining those intermetallic compounds.

Joining method and joint structure of dissimilar metal

A tubing including an overlap portion formed by the first and second circumferential end portions overlapping and joined with each other, and a fluid leakage preventing member for preventing pressurized fluid from leaking from the tubing upon the tubing being subjected to hydrostatic forming. An apparatus and method for hydrostatic forming of a tubing having an overlap portion. The apparatus includes a die and a nozzle having fluid leakage preventing means for preventing the pressurized fluid supplied into the tubing from leaking from a clearance between the first and second circumferential end portions of the overlap portion of the tubing at the longitudinal end portions of the tubing.

Tubing for hydrostatic forming, hydrostatic forming apparatus, and hydrostatic forming method using the apparatus

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Yokosuka, Japan

Sadao Yanagida