Welding3.5
Friction STIR Welding of DIS-Similar Titanium Alloys

Tuesday, June 17, 2014: 3:30 PM
Daytona 2 (Gaylord Palms Resort )
Dr. Daniel G. Sanders , The Boeing Company, Seattle, WA
Prof. M Ramulu , University of Washington, Seattle, WA
Mr. Todd Morton , The Boeing Company, Seattle, WA
Mr. Marc Petersen , The Boeing Company, Seattle, WA
Ms. Neha kulakarni , University of Washington, Seattle, WA
FRICTION STIR WELDING OF DIS-SIMILAR TITANIUM ALLOYS Daniel Sanders1,2, Neha Kulakarni2, Todd Morton1,2, Mark Petersen1, Mamidala Ramulu2 1: Boeing, P.O. Box 3707 MS5K-63, Seattle, WA, 98124, U.S.A. 2: University of Washington, Seattle, WA, U.S.A. Contacting Author : daniel.g.sanders@boeing.com Keywords: friction stir welding, titanium, dis-similar alloys Abstract: This paper examines the combination of dis-similar titanium alloys for thin sheet butt welding applications using the friction stir welding (FSW) process. The development of the process parameters and the resulting metallurgical structure is examined. A particular focus of this research has been on the post FSW residual stress, which has been measured in and around the weld zone. The unusual morphology and mixing of the alloying elements within the span of the weld nugget is also studied.
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