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This photo shows a joint between two dissimilar materials: aluminum and steel (background) along with a friction stir scribe tool (foreground). PNNL patented the friction stir scribe technology, which was used to join the two materials. The result gives manufacturers more flexibility in the materials they use, including those that make vehicles lighter-weight and therefore more fuel efficient. PNNL worked with commercial manufacturing partners to develop the technology.

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Document Title: Friction stir scribe technology—joining of aluminum and steel
Category: Economic Development and Technology Commercialization, Energy Production and Conservation, Materials Science
Media Type: Photos
Date of Image/Photo: June 26, 2015
Background: Friction stir scribe enables joining of very dissimilar metals, such as aluminum and steel, magnesium and steel, and aluminum and titanium. It also enables the joining of dissimilar materials such as polymer and metal joints, or composites and metals.
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/DRAE-,2L_QB

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