Hybrid welding process developed

Dec 18, 2006

U.S. scientists say they've developed a hybrid process involving the use of a laser in friction-stir welding to extend the application to more materials.

FSW, which has been in development for about 10 years, is a technique for joining small metal alloys using a rotating tool to fasten metal components without melting.

The process is best suited for alloys with low melting points, such as aluminum, and materials that are difficult to weld with conventional methods. However, extending FSW to high-temperature metals and alloys such as steel and titanium has been problematic because of tool wear and material requirements.

Scientists at the Oak Ridge National Laboratory say adding a laser to the FSW process to preheat and soften the metal parts reduces wear on the tool.

The researchers say the hybrid laser-assisted FSW technology will enable the industrial application of FSW to joining high-temperature metals and alloys.

The U.S. Department of Energy's Office of Basic Energy Sciences, Energy Efficiency and Renewable Energy and Fusion Materials fund the work.

Copyright 2006 by United Press International

Explore further: Making our highways safer and more efficient

add to favorites email to friend print save as pdf

Related Stories

The origins of polarized nervous systems

4 minutes ago

(Phys.org)—There is no mistaking the first action potential you ever fired. It was the one that blocked all the other sperm from stealing your egg. After that, your spikes only got more interesting. Waves ...

New incubator network to help clean-energy entrepreneurs

55 minutes ago

The Energy Department's National Renewable Energy Laboratory (NREL) and the Electric Power Research Institute (EPRI) have launched the Clean Energy Incubator Network. The program, funded by the Energy Department, aims to ...

A new level of earthquake understanding

57 minutes ago

As everyone who lives in the San Francisco Bay Area knows, the Earth moves under our feet. But what about the stresses that cause earthquakes? How much is known about them? Until now, our understanding of ...

Recommended for you

Laser weapon system stops truck in field test

Mar 04, 2015

Lockheed Martin's 30-kilowatt fiber laser weapon system successfully disabled the engine of a small truck during a recent field test, demonstrating the rapidly evolving precision capability to protect military ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.