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In Situ Heating During XRD Measurements as a Method to Study Recrystallisation of Aluminium Alloy AA3003
Linköping University, Department of Physics, Chemistry and Biology.
2018 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Recrystallisation is an important topic in the metal industry since the process may drastically alter the properties of the materials subjected to it. By controlling the recrystallisation process, the material properties can be adjusted as desired, which could lead to stronger materials and hence lighter constructions, decreasing our material consumption. This is currently regulated using softening curves complied from tensile tests, a method which does not show the degree of recrystallisation of a metal. This thesis work therefore explores the possibility to characterise the recrystallisation process using in situ X-ray diffraction, XRD, during heating.The method proposed is using in situ heat treatments of aluminium samples combined with XRD measurements. The results show that it is possible to follow the recrystallisation process of rolled aluminium alloy AA3003 by using in situ XRD during heating, a discovery that could facilitate development and understanding of new materials. Nevertheless, further investigations of the subject is required before the method will be profitable.

Abstract [sv]

Rekristallisation är ett viktigt ämne inom metallindustrin, detta eftersom materialegenskaper drastiskt kan förändras under rekristallisationsprocessen. Genom att kontrollera rekristallisationsprocessen kan materialegenskaper skräddarsys efter applikation. Även starkare material kan tillverkas och därav kan lättare strukturer konstrueras och på så vis minskar även materialåtgången. Idag regleras rekristallisation med hjälp av mjukningskurvor sammanställda genom dragprov, en metod som inte kan visa rekristallisationsgraden av en metall. Detta examensarbete utforskar möjligheten att karaktärisera rekristallisationsprocessen genom att använda in situ röntgendiffraktion, XRD, under värmningsprocessen.Den framtagna metoden inkluderar in situ värmebehandlingar av aluminiumprover i kombination med XRD-mätningar. De erhållna resultaten från experimenten visar på att det är fullt möjligt att följa rekristallisationsprocessen av aluminiumlegering AA3003 med in situ XRD, en upptäckt som kan komma att underlätta vid utveckling och förståelse av legeringar och nya material. Dock krävs fortsatta studier i ämnet innan metoden kan anses vara lönsam.

Place, publisher, year, edition, pages
2018. , p. 38
Keywords [en]
In situ XRD, in situ heat treatment, recrystallisation, rolled aluminium, AA3003
National Category
Other Physics Topics Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-150092ISRN: LITH-IFM-A-EX—18/3573—SEOAI: oai:DiVA.org:liu-150092DiVA, id: diva2:1238132
External cooperation
Gränges Sweden AB
Subject / course
Technical Physics
Presentation
2018-06-14, Röntgen, Linköpings Univeristet, 581 83, Linköping, 10:15 (English)
Supervisors
Examiners
Available from: 2018-08-14 Created: 2018-08-12 Last updated: 2018-08-14Bibliographically approved

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CiteExportLink to record
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