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Mechanical properties of Al and Mg alloy welds made by friction stir lap welding

Yazdanian, Shamzin, Chen, Zhan and Littlefair, Guy 2011, Mechanical properties of Al and Mg alloy welds made by friction stir lap welding, in TMS 2011 : Friction Stir Welding and Processing VI, Minerals, Metals & Materials Society, [San Diego, Calif.], pp. 243-251, doi: 10.1002/9781118062302.ch30.

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Title Mechanical properties of Al and Mg alloy welds made by friction stir lap welding
Author(s) Yazdanian, Shamzin
Chen, Zhan
Littlefair, Guy
Conference name Minerals, Metals and Materials Society (TMS) Annual Meeting and Exhibition (140th : 2011 : San Diego, Calif.)
Conference location San Diego, Calif.
Conference dates 27 Feb.-3 Mar. 2011
Title of proceedings TMS 2011 : Friction Stir Welding and Processing VI
Editor(s) Mishra, Rajiv
Mahoney, Murray W.
Sato, Yutaka
Hovanski, Yuri
Verma, Ravi
Publication date 2011
Conference series Minerals, Metals and Materials Society (TMS) Annual Meeting and Exhibition
Start page 243
End page 251
Publisher Minerals, Metals & Materials Society
Place of publication [San Diego, Calif.]
Keyword(s) hooking
softening
fracture strength
local plasticity
Summary The unfavourable effect of hooking or softening, respectively, on fracture strength of joints made using friction stir lap welding (FSLW) is known but the combined effect on the magnitude of strength reduction is not clear. In this study, FSLW experiments using AA6060-T5 and AZ31B-H24 alloys were conducted. For both alloys, rotation speed has a dominant effect on increasing the hook size due to increasing the stir flow volume thus lifting more the original lapping surfaces. In AA6060 welds, FS softening has limited the strength, when hook size approaches zero. Meanwhile hook starts to reduce the strength significantly, when its size reaches a critical value. The maximum strength of AA6060 FSL welds reaches ~ 70% of the base metal UTS when hook size approaches zero. This is in contract to ~30% for AZ31B FSL welds. This can be explained by the local plastic deformation behaviour during lap tensile testing.
ISBN 9781118002018
Language eng
DOI 10.1002/9781118062302.ch30
Field of Research 091006 Manufacturing Processes and Technologies (excl Textiles)
091099 Manufacturing Engineering not elsewhere classified
Socio Economic Objective 861299 Fabricated Metal Products not elsewhere classified
HERDC Research category E2.1 Full written paper - non-refereed / Abstract reviewed
Copyright notice ©2011, The Minerals, Metals & Materials Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042278

Document type: Conference Paper
Collection: School of Engineering
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