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:
Creep and creep rupture tests were carried out for friction-stir-welded (FSW) joints of5052 aluminum alloy plates at temperatures between 573 and 723 K. The results were comparedwith those of the base metal. 5052-O plates of 20 mm in thickness were joined by FSW and roundbar creep specimens were machined out of the welded plates. Tensile tests were also conducted atRT, 623 and 723K for both FSW joints and base metal. The tensile strength of the joints was almostthe same as that of the base metal at room and elevated temperatures. However, the FSW jointsshowed appreciably higher minimum creep rate and shorter rupture time than the base metal at allthe tested temperatures and initial creep stresses. Creep rupture of the joints always occurred withinthe plastically stirred zone with lower contraction of cross-sectional area. Thus, FSW joints of 5052alloy plates showed lower creep strength than the base metal
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.1175.pdf
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