ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Strength of Al5083-O FSW joints was evaluated, in relation to FSW conditions. Staticstrength of the joints was found to be enough because base metal fracture occurred in the tensiletests of joints for some FSW conditions. However, the fatigue strength of those joints with finestatic strength varied significantly. For example, in tensile strength of joints with the FSWcondition with tool rotation: 800 rpm- welding speed: 100 mm/min (800-100), 800 rpm-200mm/min (800-200) and 500 rpm- 100 mm/min (500-100), each condition of FSW joint efficiencywere all hundred percent. In contrast, joint efficiency for fatigue strength varied from 75% for500-100 to 31% for 800-200. Crack path in fatigue test was always initiated at the center of backsurface of FSW weld zone, and propagated through stir zone. The variance of fatigue strength isbelieved to be attributed to the stirred condition at back surface
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.793.pdf
