US 2015/0175207 A1Published application

Friction-stir welded structure

AssigneeHonda Motor Co., Ltd.

InventorsTsunehisa Hata, Toshikazu Hirobe

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Abstract

Disclosed is a friction-stir welded structure in which corrosion resistance of a peeling region is ensured when a film coating is peeled away from a steel sheet. In a sub-frame, an aluminum alloy member is laid over a steel member that has been electropainted, and the overlaid part where the member is laid over is friction-stir welded at inner and outer welds. The aluminum alloy member has an aluminum layered part which together with the steel member constitutes the overlaid part due to being laid over the steel member, and aluminum extending parts provided to the aluminum layered part . The aluminum extending parts have aluminum extending parts that are orthogonal to the extending direction of the inner and outer welds and that protrude outward from the steel member.

Claims5

Dependent claims

A friction-stir welded structure including a steel member preliminarily subjected to electrodeposition, an aluminum alloy member overlapping the steel member, and an overlapping part where the aluminum alloy member overlaps the steel member, the overlapping part having a joining portion subjected to friction-stir welding, the aluminum alloy member comprising:

an aluminum overlapping portion overlapping the steel member, the aluminum overlapping portion and the steel member constituting the overlapping part;
and
an aluminum extension portion provided at the aluminum overlapping portion, the aluminum extension portion being orthogonal to a direction of extension of the joining portion and protruding outwardly of the steel member,
wherein the aluminum extension portion has an aluminum projecting part projecting toward a side of the steel member, the aluminum projecting part having an end edge projecting beyond a surface of the steel member, the surface of the steel member being opposite the aluminum overlapping portion.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/416,471Filed 30 May 2013
Priority: JP 2012-16506325 Jul 2012
Published: 25 Jun 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

B62D 21/11
Understructures, i.e. chassis frame on which a vehicle body may be mounted: with resilient means for suspension , e.g. of wheels or engine;…
B23K 20/122
The heat being generated by friction; Friction welding: using a non-consumable tool, e.g. friction stir welding
B23K 20/1265
Using a non-consumable tool, e.g. friction stir welding: non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
B23K 20/129
The heat being generated by friction; Friction welding: specially adapted for particular articles or work