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Influence of corrosion of self-piercing riveted high strength aluminium alloy joints with button cracks on the mechanical strength

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Li, Dezhi, Han, Li, Chrysanthou, Andreas and Shergold, Mike (2018) Influence of corrosion of self-piercing riveted high strength aluminium alloy joints with button cracks on the mechanical strength. Journal of Material Science and Technology Research, 5 . pp. 16-27. doi:10.15377/2410-4701.2018.05.4 ISSN 2410-4701.

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Official URL: http://dx.doi.org/10.15377/2410-4701.2018.05.4

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Abstract

For high strength aluminium alloys, such as AA6008T61 and AA6111 PFHT, when they are joined as the bottom material by self-piercing riveting (SPR), they tend to crack at the joint buttons. These cracks, especially those penetrated to the rivets, may cause galvanic corrosion problem with the steel rivet. In this paper, the mechanical strength of four stack/die combinations with different joint button cracking severity was studied before and after salt-spray corrosion test. The results showed that corrosion on the severely cracked joints was worse than that on the joints with small cracks and the corrosion on the stack with the same top and bottom material was less than that on the stack with different top and bottom materials. For all joints the static lap shear strength after corrosion was improved, but the static T peel strength after corrosion was slightly reduced or did not have obvious change. The results also showed that after corrosion the lap shear fatigue strength of the specimens with severe cracks did not have obvious change, but the lap shear fatigue strength of the specimens with small cracks slightly reduced.

Item Type: Journal Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Aluminum—Fatigue , Metals—Corrosion fatigue
Journal or Publication Title: Journal of Material Science and Technology Research
Publisher: Zeal Press
ISSN: 2410-4701
Official Date: 2018
Dates:
DateEvent
2018Published
22 February 2018Accepted
Volume: 5
Page Range: pp. 16-27
DOI: 10.15377/2410-4701.2018.05.4
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 18 July 2019
Date of first compliant Open Access: 19 July 2019
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[ERDF] European Regional Development Fundhttp://dx.doi.org/10.13039/501100008530
UNSPECIFIEDInnovate UK: High Value Manufacturing Catapulthttp://id.loc.gov/authorities/names/no2016084289
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