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  4. Effect of tool travel and rotation speeds on weld zone defects and joint strength of aluminium steel lap joints made by friction stir welding
 
research article

Effect of tool travel and rotation speeds on weld zone defects and joint strength of aluminium steel lap joints made by friction stir welding

Movahedi, M.
•
Kokabi, A. H.
•
Reihani, S. M. Seyed
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2012
Science And Technology Of Welding And Joining

In this study, Al-5083 and St-12 alloy sheets were friction stir lap welded at different travel (7-23 cm min(-1)) and rotation (750-1125 rev min(-1)) speeds of the welding tool. The welded joints were characterised by various methods including shear tensile and Vickers microhardness tests, optical and scanning electron microscopies and X-ray diffraction analysis. The results showed that the weld zone defects decreased, and the joint strength also improved significantly with the reducing tool travel speed from 23 to 7 cm min(-1). The travel speed of 11 cm min(-1) was an optimum speed within the travel speeds investigated in this work. Additionally, raising the tool rotation speed enhanced the joint strength slightly. The microhardness results confirmed the formation of intermetallic phase layer with the hardness of similar to 335 HV at the swirl layered structure.

  • Details
  • Metrics
Type
research article
DOI
10.1179/1362171811Y.0000000092
Web of Science ID

WOS:000299425300013

Author(s)
Movahedi, M.
Kokabi, A. H.
Reihani, S. M. Seyed
Najafi, H.  
Date Issued

2012

Published in
Science And Technology Of Welding And Joining
Volume

17

Start page

162

End page

167

Subjects

Friction stir welding

•

Lap joint

•

Al-5083

•

St-12

•

Joint strength

•

Intermetallic compound

•

Aisi-1018 Steel

•

Material Flow

•

Alloy

•

Model

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPMC  
Available on Infoscience
February 23, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/78057
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