Method of joining dissimilar metals through friction stir welding and multi-metal component

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United States of America Patent

PATENT NO 11440134
APP PUB NO 20200398369A1
SERIAL NO

16448482

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Abstract

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A component, which may be an automotive chassis structure, includes first and second sub-part main bodies. The first sub-part main body is formed of a first material, and the second sub-part main body is formed of a second material. The first material is a steel alloy, and the second material is aluminum or an aluminum alloy. A transition layer is attached to and contacts the first sub-part main body. The transition layer is formed of a third material, where the third material contains at least a majority of copper. A mixed layer is disposed between the transition layer and the second sub-part main body, and the mixed layer is formed of a mixture of the second material and the third material. A disclosed method includes forming the component by friction stir welding the transition layer to the second sub-part main body.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLC300 RENAISSANCE CENTER MAIL CODE 482-C24-A68 P O BOX 300 DETROIT MI 48265

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gerard, Dale A Bloomfield Hills, US 42 123
Kotlarek, Adam G Berkley, US 2 0
Li, Huaxin Rochester Hills, US 65 128

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