A STUDY ON INTERNAL DEFECTS IN FRICTION STIR WELDING OF ALUMINIUM ALLOYS
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Conference PaperDate:
2014Access:
openAccessCitation:
Karen Johanna Quintana Cuellar, Harry Mitrogiannopoulos, Daniel Hiller, Daniel Trimble, Rocco Lupoi, Garret O'Donnell, Jose Luis Silveira, Shaun McFadden, A STUDY ON INTERNAL DEFECTS IN FRICTION STIR WELDING OF ALUMINIUM ALLOYS, 31st International Manufacturing Conference (IMC31), Cork (Ireland), 3rd of September, 2014, 69 - 74Download Item:
IMCPaper (Updated)draft 4.pdf (Published (author's copy) - Peer Reviewed) 242.4Kb
Abstract:
Friction Stir Welding (FSW) is a solid state welding
process
that offers
advantages
over the conventional techniques.
As it is a solid state process, re
-
solidification defects
like porosity and cracks
are greatly reduced
.
T
he
aim of the
research undertaken was to examine weld quality of FSW joints using destructive
and non
-
destructive methods
.
Welds were produced in Al 5052 and Al 2024
plates
using a tapered cylinder
pin profile
. X
-
ray imaging was used to determine
the weld qu
ality of the Al 5052 joints
. Cross
-
sectional analysis was undertaken on
weld samples of Al 2024 joints. In both cases, a tunnel defect
(internal defect)
was found running parallel to the advancing side of each weld. This defect was
located at the depth of
pin penetration in the 2024 joints. It was found that the size
of the defect could be reduced by altering operating parameters and weld path.
Tests undertaken on the Al 2024 plates showed that that defect free welds can be
produced by using pin profiles wh
ich encourage greater plastic deformation.
Author's Homepage:
http://people.tcd.ie/lupoirhttp://people.tcd.ie/smcfadd
Author: LUPOI, ROCCO; MCFADDEN, SHAUN
Other Titles:
31st International Manufacturing Conference (IMC31)Type of material:
Conference PaperAvailability:
Full text availableKeywords:
Friction Stir Welding, Weld Quality, Internal DefectsSubject (TCD):
Creative Technologies , Smart & Sustainable Planet , Mechanical EngineeringLicences: