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A Brief Introduction to the Theory of Friction Stir WeldingFriction stir welding (FSW) is a solid state welding process invented in 1991 at The Welding Institute in the United Kingdom. A weld is made in the FSW process by translating a rotating pin along a weld seam so as to stir the sides of the seam together. FSW avoids deleterious effects inherent in melting and is already an important welding process for the aerospace industry, where welds of optimal quality are demanded. The structure of welds determines weld properties. The structure of friction stir welds is determined by the flow field in the weld metal in the vicinity of the weld tool. A simple kinematic model of the FSW flow field developed at Marshall Space Flight Center, which enables the basic features of FSW microstructure to be understood and related to weld process parameters and tool design, is explained.
Document ID
20110006308
Acquisition Source
Marshall Space Flight Center
Document Type
Presentation
Authors
Nunes, Arthur C., Jr.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 25, 2013
Publication Date
October 17, 2008
Subject Category
Mechanical Engineering
Report/Patent Number
M09-0069
M09-0068
Meeting Information
Meeting: A Brief Introduction to the Theory of Friction Stir Welding
Location: Huntsville, AL
Country: United States
Start Date: October 17, 2008
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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