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Modelling of thermal fluid dynamics for fusion welding
University of Birmingham,School of Metallurgy and Materials, , Edgbaston, Birmingham B15 2TT, UK.
University of Birmingham, School of Metallurgy and Materials, Edgbaston, Birmingham B15 2TT, UK.
University of Birmingham, School of Metallurgy and Materials, Edgbaston, Birmingham B15 2TT, UK.
University of Birmingham, School of Metallurgy and Materials, Edgbaston, Birmingham B15 2TT, UK.
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2018 (Engelska)Ingår i: Journal of Materials Processing Technology, ISSN 0924-0136, E-ISSN 1873-4774, Vol. 252, nr February, s. 176-182Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A fluid dynamics approach to modelling of fusion welding in titanium alloys is proposed. The model considers the temporal and spatial evolution of liquid metal/gas interface to capture the transient physical effects during the heat source–material interaction of a fusion welding process. Melting and vaporisation have been considered through simulation of all interfacial phenomena such as surface tension, Marangoni force and recoil pressure. The evolution of the metallic (solid and liquid) and gaseous phases which are induced by the process enables the formation of the keyhole, keyhole dynamics, and the fully developed weld pool geometry. This enables the likelihood of fluid flow-induced porosity to be predicted. These features are all a function of process parameters and formulated as time-dependent phenomena. The proposed modelling framework can be utilised as a simulation tool to further develop understanding of defect formation such as weld-induced porosity for a particular fusion welding application. The modelling results are qualitatively compared with available experimental information.

Ort, förlag, år, upplaga, sidor
2018. Vol. 252, nr February, s. 176-182
Nyckelord [en]
Keyhole modelling, Fusion welding, Thermal fluid dynamics, Titanium alloys
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-11810DOI: 10.1016/j.jmatprotec.2017.09.019ISI: 000417659800017Scopus ID: 2-s2.0-85029481172OAI: oai:DiVA.org:hv-11810DiVA, id: diva2:1158594
Forskningsfinansiär
Europeiska regionala utvecklingsfonden (ERUF), 080/P1/010
Anmärkning

Funders: Rolls-Royce; Manufacturing Technology Centre, University of Birmingham 

Tillgänglig från: 2017-11-20 Skapad: 2017-11-20 Senast uppdaterad: 2019-05-28Bibliografiskt granskad

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Choquet, Isabelle

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