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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
Ahmed, S. and Saha, Probir 
Corresponding Authors:
Probir Saha 
DOI #:
http://dx.doi.org/10.1016/j.jmatprotec.2017.09.034 
Title:
Development and testing of fixtures for friction stir welding of thin aluminium sheets 
Journal:
Journal of Materials Processing Technology 
Year:
2018 
Volume:
252 
Page:
242-248 
Keywords:
Mechanical fixture, Friction stir welding, Thin sheets, Aluminium alloy 6061-T6, Bending test 
Abstract:
A simple mechanical fixture is proposed to overcome the fixturing issues present in joining of thin sheets. The fixture is similar to a lever type clamp and unlike some common FSW fixtures can hold the thin sheets close to the weld line with precision and uniform pressure. To reduce heat loss, asbestos were used as cover plate. The feasibility of the fixture was confirmed by successfully welding 0.5 mm thin aluminium alloy 6061-T6 sheets at five different tool travel speeds. A joint efficiency (UTSFSW/UTSBasemetal) of 74% and ductility of 8% in terms of percentage elongation were obtained corresponding to 150 mm/min of tool travel speed in which case the weld also withstood 180° bending test. The welds had a distorted shape similar to that of a saddle. The macrostructure indicated that TMAZ area decreased with tool travel speed 
Entered by:
Physics Head on 2020-08-04 
 
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