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Development and evaluation of hybrid joining for metals to polymers using friction stir welding
KTH, Skolan för industriell teknik och management (ITM), Industriell produktion.
2015 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Combinations of different materials are increasingly used in the modern engineering structures. The driving forces of this trend are rising fuel costs, global warming, customer demands and strict emission standards. Engineers and industries are forced to improve fuel economy and cut emissions by introducing newly design engines and lightweighting of structural components. The use of lightweight materials in the structures has proved successful to solve these problems in many industries especially automobile and aerospace. However, industry still lacks knowledge how to manufacture components from polymeric materials in combination with metals where significant differences exist in properties.

This thesis aims to demonstrate and generate the methodology and guidelines for hybrid joining of aluminium alloys to thermoplastics using friction stir welding. The developed technique was identified, optimized and evaluated from experimental data, metallography and mechanical characterization. The success of the technique is assessed by benchmarking with recent literatures.

In this work, lap joints between aluminium alloys (AA5754, AA6111) and thermoplastics (PP, PPS) were produced by the friction stir welding technique. The specimens were joined with the friction stir welding tools under as-received conditions. Metallic chips were generated and merged with the molten thermoplastic to form a joint under the influence of the rotating and translating tool. The effects of process parameters such as rotational speed, translational speed and distance to backing were analyzed and discussed. The investigation found joint strength was dominated by mechanical interlocking between the stir zone and the aluminium sheet. The results also show that the joint strength is of the same order of magnitude as for other alternative joining techniques in the literature.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH Royal Institute of Technology, 2015.
Serie
TRITA-IIP, ISSN 1650-1888 ; 15:05
Nyckelord [en]
aluminium alloy, thermoplastic, friction stir welding, dissimilar joining
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Industriell produktion
Identifikatorer
URN: urn:nbn:se:kth:diva-173232ISBN: 978-91-7595-680-0 (tryckt)OAI: oai:DiVA.org:kth-173232DiVA, id: diva2:852118
Presentation
2015-09-25, M311, Brinellvägen 68, KTH, Stockholm, 10:00 (Engelska)
Opponent
Handledare
Forskningsfinansiär
VINNOVA, Dnr 2010-01982
Anmärkning

QC 20150908

Tillgänglig från: 2015-09-08 Skapad: 2015-09-08 Senast uppdaterad: 2015-09-08Bibliografiskt granskad
Delarbeten
1. Hybrid joining of alumnium to thermoplastics with friction stir welding
Öppna denna publikation i ny flik eller fönster >>Hybrid joining of alumnium to thermoplastics with friction stir welding
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2012 (Engelska)Ingår i: Proceedings Swedish production  Symposium 2012, 2012Konferensbidrag, Publicerat paper (Refereegranskat)
Nyckelord
joining, friction stir welding, alumnium, thermoplastic
Nationell ämneskategori
Materialteknik
Forskningsämne
Industriell produktion
Identifikatorer
urn:nbn:se:kth:diva-169495 (URN)
Konferens
Swedish Production Symposium 2012, Linköping, Sweden, 6-8 Nov 2012
Forskningsfinansiär
XPRES - Initiative for excellence in production research
Anmärkning

NV 20150616

Tillgänglig från: 2015-06-15 Skapad: 2015-06-15 Senast uppdaterad: 2015-09-08Bibliografiskt granskad
2. Joining of hybrid joints between thermoplastics and alumnium alloy by friction stir lap welding: a feasability study
Öppna denna publikation i ny flik eller fönster >>Joining of hybrid joints between thermoplastics and alumnium alloy by friction stir lap welding: a feasability study
2014 (Engelska)Ingår i: 10th Friction Stir Welding Symposioum, 2014, s. S6B-P4-Konferensbidrag, Publicerat paper (Refereegranskat)
Nationell ämneskategori
Annan teknik
Forskningsämne
SRA - Produktion
Identifikatorer
urn:nbn:se:kth:diva-161921 (URN)
Konferens
10th Friction Stir Welding Symposium, Beijing china 20‐22 May 2014
Anmärkning

QC 20150323

Tillgänglig från: 2015-03-19 Skapad: 2015-03-19 Senast uppdaterad: 2015-09-08Bibliografiskt granskad
3. Dissimilar joining between alumnium alloy AA6111 and thermoplastics using friction stir weldiing
Öppna denna publikation i ny flik eller fönster >>Dissimilar joining between alumnium alloy AA6111 and thermoplastics using friction stir weldiing
2015 (Engelska)Ingår i: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936Artikel i tidskrift (Refereegranskat) Accepted
Nationell ämneskategori
Teknik och teknologier
Forskningsämne
SRA - Produktion
Identifikatorer
urn:nbn:se:kth:diva-161928 (URN)
Anmärkning

QP 201503

Tillgänglig från: 2015-03-19 Skapad: 2015-03-19 Senast uppdaterad: 2017-12-04Bibliografiskt granskad

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