Paper Title:
Effect of Welding Parameters on Microstructure and Tensile Properties of Friction Stir Welded 6061 AL Joints
  Abstract

The present investigation is aimed at evaluating the influence of tool rotation rate and welding speed on the microstructure, tensile properties, and fracture mode of 6061 Al-T651 alloy after friction stir welding (FSW). TEM results revealed that in the nugget zone (NZ), FSW resulted in the dissolution of fine needle-shaped precipitates that previously existed in the base metal. At a given rotation rate of 1400rpm, the yield strength (YS) and ultimate tensile strength (UTS) of the welded joints increased with increasing welding speed from 200 to 600mm/min. However, the UTS of the joints was nearly independent of the rotation rate. Furthermore, the relationship between the hardness distribution and fracture location has also been identified.

  Info
Periodical
Materials Science Forum (Volumes 618-619)
Edited by
M.S. Dargusch & S.M. Keay
Pages
41-44
DOI
10.4028/www.scientific.net/MSF.618-619.41
Citation
A. H. Feng, D. L. Chen, Z. Y. Ma, "Effect of Welding Parameters on Microstructure and Tensile Properties of Friction Stir Welded 6061 AL Joints", Materials Science Forum, Vols. 618-619, pp. 41-44, 2009
Online since
April 2009
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Price
$32.00
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