Integrated modeling of friction stir welding: from welding conditions to fracture strain

A. Simar, Y. Bréchet, B. De Meester, A. Denquin, T. Pardoen

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

A fully integrated approach of the welding optimization towards enhanced performances in terms of forming operations or structural integrity has been developed by combining the following chain of models: (1) a model for the friction stir welding (FSW) process, coupling material flow and thermal analysis; (2) a model for the precipitation evolution; (3) a microstructure based strength and strain hardening model; (4) a micromechanical model for the damage evolution. The approach has been specifically developed and validated in an application on aluminium alloy 6005A-T6. The different steps of the modelling have been assessed owing to local temperature measurements during welding, fine hardening precipitation using DSC and TEM, local mechanical testing using thin specimens extracted from various regions of the weld, global mechanical testing of samples cut perpendicular to the weld, supplemented by homogenous samples subject to various heat treatments and fractographic analysis. A parameter study allows relating the effect of the welding speed down to the fracture strain.

Original languageEnglish
Title of host publication12th International Conference on Fracture 2009, ICF-12
Pages5373-5381
Number of pages9
Publication statusPublished - 2009
Externally publishedYes
EventInternational Congress on Fracture 2009 - Ottawa, Canada
Duration: 12 Jul 200917 Jul 2009
Conference number: 12th

Publication series

Name12th International Conference on Fracture 2009, ICF-12
Volume7

Conference

ConferenceInternational Congress on Fracture 2009
Abbreviated titleICF 2009
CountryCanada
CityOttawa
Period12/07/0917/07/09

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