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Comparison of the Effects of Tool Geometry for Friction Stir Welding Thin Sheet Aluminum Alloys for Aerospace ApplicationsIn this presentation, the results of a recent study on the effect of pin tool design for friction stir welding thin sheets (0.040") of aluminum alloys 2024 and 7075 are provided. The objective of this study was to investigate and document the effect of tool shoulder and pin diameter, as well as the presence of pin flutes, on the resultant microstructure and mechanical properties at both room temperature and cryogenic temperature. Specifically, the comparison between three tools will include: FSW process load analysis (tool forces required to fabricate the welds), Static Mechanical Properties (ultimate tensile strength, yield strength, and elongation), and Process window documenting the range of parameters that can be used with the three pin tools investigated. All samples were naturally aged for a period greater than 10 days. Prior research has shown 7075 may require post weld heat treatment. Therefore, an additional pair of room temperature and cryogenic temperature samples was post-weld aged to the 7075-T7 condition prior to mechanical testing.
Document ID
20060024776
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Merry, Josh
(Wichita State Univ. Wichita, KS, United States)
Takeshita, Jennifer
(Lockheed Martin Space Systems Co. New Orleans, LA, United States)
Tweedy, Bryan
(Wichita State Univ. Wichita, KS, United States)
Burford, Dwight
(Wichita State Univ. Wichita, KS, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Metals And Metallic Materials
Meeting Information
Meeting: Aerospace Materials Conference
Location: Seattle, WA
Country: United States
Start Date: May 15, 2006
End Date: May 18, 2006
Distribution Limits
Public
Copyright
Other

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