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Influence of zinc on intermetallic compounds formed in friction stir welding of AA5754 aluminium alloy to galvanised ultra-high strength steel
RISE - Research Institutes of Sweden, Swerea, Swerea KIMAB. KTH, Stockholm, Sweden.
RISE - Research Institutes of Sweden, Swerea, Swerea KIMAB. KTH, Stockholm, Sweden.
2017 (English)In: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936, 1-8 p.Article in journal (Refereed) In press
Abstract [en]

In this study, lap joints between AA5754 and DP1000 ultra-high strength steels were produced by friction stir welding. In order to investigate the roles of zinc on intermetallic phase formation and joint properties, steel substrates were used, two being galvanised coated and one uncoated. Joint performance has been evaluated in term of maximum tensile shear loading. The effects of the process parameter, translational speed; chemical compositions; and intermetallic phase formation on the mechanical properties have been investigated. The results show that joints with a galvanised layer exhibit higher strength as compared to the non-coated steel. A thicker galvanised layer promotes the presence of zinc in the aluminium matrix, resulting in better joint properties. The level of zinc contents in the aluminium matrix depends on process temperature and material circulation characteristics. Two stable Al-rich intermetallic phases, Al5Fe2 and Al13Fe4, were detected at the interface regardless of the coating conditions.

Place, publisher, year, edition, pages
2017. 1-8 p.
Keyword [en]
aluminium, Dissimilar welding, friction stir welding, galvanised steel, intermetallic, lap joint, ultra-high strength steel, zinc, Alloy steel, Aluminum, Aluminum coatings, Friction, Galvanizing, High strength alloys, Hydrogen embrittlement, Intermetallics, Iron compounds, Joints (structural components), Research laboratories, Stainless steel, Steel heat treatment, Tribology, Welding, Aa5754 aluminium alloys, Chemical compositions, Intermetallic phasis, Tensile-shear loadings, Ultra high strength steel, High strength steel
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-29332DOI: 10.1080/13621718.2017.1302553Scopus ID: 2-s2.0-85015615371OAI: oai:DiVA.org:ri-29332DiVA: diva2:1094970
Available from: 2017-05-11 Created: 2017-05-11 Last updated: 2017-05-11Bibliographically approved

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CiteExportLink to record
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