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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Strangwood, Martin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2020Sports Materialscitations
- 2019Grain growth on reheating for an as-cast Al-Nb-containing steel with segregated compositioncitations
- 2019Effect of grain size distribution on recrystallisation kinetics in an Fe-30Ni model alloycitations
- 2018Characterisation of precipitation and coarsening of carbides during tempering in a low alloyed quenched and tempered steelcitations
- 2018Characterisation of precipitation and carbide coarsening in low carbon low alloy Q&T steels during the early stages of temperingcitations
- 2017Skeletonisation to Find the Centre of Dendrites Traced from a 2D Microstructural Image
- 2016Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy
- 2015Electromagnetic evaluation of the microstructure of grade 91 tubes/pipescitations
- 2014Stereologische Analyse der mikrostrukturellen Inhomogenitäten in durch Kokillenguss mit Direktkühlung und durch konventionellen Strangguss verarbeiteten Aluminium-Magnesium-Legierung (AA5754)
- 2013The effect of hydrogen on porosity formation during electron beam welding of titanium alloys
- 2013Magnetic evaluation of microstructure changes in 9Cr-1Mo and 2.25Cr-1Mo steels using electromagnetic sensorscitations
- 2012The effect of hydrogen on porosity formation during electron beam welding of titanium alloys
- 2012On the mechanism of porosity formation during welding of titanium alloyscitations
- 2012Hydrogen Transport and Rationalization of Porosity Formation during Welding of Titanium Alloyscitations
- 2012Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloycitations
- 2009Microstructure-property development in friction stir welds of Al-Mg alloys
- 2007Microstructure-microhardness relationships in friction stir welded AA5251citations
- 2007Influence of base metal microstructure on microstructural development in aluminium based alloy friction stir weldscitations
- 2005Microstructural development during friction stir welding of work hardenable Al-Mg alloys
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article
Influence of base metal microstructure on microstructural development in aluminium based alloy friction stir welds
Abstract
The formation of 'onion rings' during friction stir welding of many aluminium based alloys has previously been related to the process parameters ( forward and rotational tool motion). The 'onion rings' have also been observed to contain fine and coarse grain bands and particle rich and particle poor bands. However, the influence of variations in the base metal microstructure on the presence of the 'onion rings' has not been investigated and is the subject of this paper. 2xxx and 5xxx sheet materials in various tempers prepared by both direct chill and continuous casting have been characterised through thickness using optical and electron microscopy. Stereological studies of the intermetallic particle distributions in the base metal and the welds were carried out. The relationship between the banding of constituent particles ( e. g. Al-x( Fe, Mn)(y)Si-z and MgxSi in AA5xxx and the Al2CuMg or Al2Cu in AA2xxx) along the rolling direction and the formation of the 'onion rings' structure and the banded grain structure was investigated. Within the range of welding parameters investigated, it was found that base materials with clear banding of the intermetallic particles showed a defined 'onion rings' structure with a banded grain and particle structure, whereas similar area fractions of intermetallic particles randomly distributed in the base metal did not give clear 'onion rings' on friction stir welding. The intermetallic particle distribution had a greater effect on the 'onion ring' formation than variations in the processing parameters.