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Finite element analysis using a dislocation density based flow stress model coupled with model for precipitate evolution
Materials Science and Applied Mathematics, Faculty of Technology and Society, Malmö University, Malmö University, Materials Science, Technology and Society, Malmö Högskola.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-0053-5537
GKN Aerospace Engine Systems, Trollhättan.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-2544-9168
2014 (English)In: 8th International Symposium on Superalloy 718 and Derivatives / [ed] Eric Ott, John Wiley & Sons, 2014, p. 155-168Conference paper, Published paper (Refereed)
Abstract [en]

Gas Tungsten Arc Welding is simulated using the finite element method. The material model that has been used is a physically based plasticity model, coupled with a model for nucleation, growth, and coarsening of second phase particles. The material model is well suited for thermo-mechanical simulations and is used to predict microstructural changes, residual stresses and stress relaxation after post weld heat treatment. The residual stress state after welding is compared, using two different material models. One were the evolution of the precipitates is included and one where it is not. It is shown that the welding direction has an impact on the precipitate size and its distribution and thereby the residual stress state.

Place, publisher, year, edition, pages
John Wiley & Sons, 2014. p. 155-168
National Category
Other Materials Engineering
Research subject
Material Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-34024Scopus ID: 84923095562Local ID: 81f378b1-6315-44b6-93e3-eea79364f6a8ISBN: 978-1-119-01680-9 (print)OAI: oai:DiVA.org:ltu-34024DiVA, id: diva2:1007273
Conference
International Symposium on Superalloy 718 and Derivatives : 28/09/2014 - 01/10/2014
Note
Godkänd; 2014; 20150227 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Lundbäck, AndreasLindgren, Lars-Erik

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Total: 39 hits
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