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Welding International Volume 32, 2018 - Issue 8
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Articles

Improvement of asymmetry in a friction stir welded A3003/SUS 304 lap joint by double-pass process

Tomo OguraDivision of Material and Manufacturing Science, Graduate School of Engineering, Osaka University
,
Hidehito NishidaDivision of Material and Manufacturing Science, Graduate School of Engineering, Osaka University;Production Engineering Department, Manufacturing Division, Precision Machinery Company, Kawasaki Heavy Industries Ltd
,
Yuta KomiyamaDivision of Material and Manufacturing Science, Graduate School of Engineering, Osaka University
,
Mitsuo FujimotoSystem Technology Development Centre, Corporate Technology Division, Kawasaki Heavy Industries Ltd
&
Akio HiroseDivision of Material and Manufacturing Science, Graduate School of Engineering, Osaka University
Pages 527-534 | Published online: 11 Dec 2018
 
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ABSTRACT

Double-pass process was newly performed to a friction stir welded (FSWed) A3003 aluminium alloy/SUS304 stainless steel dissimilar lap joint in order to improve the asymmetry of the FSWed joint. A sound symmetrical joint was produced by running the tool again at the bead which ˆrstly produced by FSW. Tensile strength of specimens was improved by leaving the tool distance from 2 mm to 5 mm where both edges of the stirred zone were advancing side (AS-AS joint). Micro-tensile test revealed that most of the stirred zone in the AS-AS joint with the tool distance of 5 mm fractured at A3003 base metal.

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