Abstract
This paper reports the microstructural characteristics
of dissimilar friction stir welds between 5754 aluminium alloy and
C11000 copper. Dissimilar Friction Stir Welds of 5754 aluminium
and C11000 copper were produced by varying the rotational speeds
between 600 and 1200 rpm and the feed rate between 50 and 300
mm/min. The welds were characterized through Scanning Electron
Microscopy (SEM). The SEM analysis revealed the levels of
metallurgical bonding achieved at the joint interfaces of the welds
produced and it can be established that better metallurgical bonding
and good mixing of both materials joined were achieved in welds
produced at lower feed rates of 50 mm/min and 150 mm/min while
defect population was found to be common in the welds produced at
high feed rate of 300 mm/min.