J. Phys. IV France 120 (2004) 599-606
DOI: 10.1051/jp4:2004120069

Experimental validation of a predictive model for numerical simulation of thermo-metallurgical phenomena during electron beam welding

M. Carin¹, Ph. Rogeon¹, D. Carron¹, Ph. Lemasson¹, D. Couedel¹, M. Dumons¹, J. Costa¹, R. Bertet², J.-C. Parpillon², P. Bocquet³ and M. Gauthier<sup>3

1</sup>  Laboratoire d'Études Thermiques Énergétique et Environnement, Université de Bretagne Sud, Lorient, France
²  Direction des Constructions Navales d'Indret, Nantes, France
³  Centre de Recherche des Matériaux du Creusot, Arcelor, Le Creusot, France

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Abstract
In the present work, thermal cycles measured with thermocouples embedded in specimens are employed to validate a numerical thermometallurgical model of an Electron Beam welding process. The implemented instrumentation techniques aim at reducing the perturbations induced by the sensors in place. A comparison between simulations performed on finite element code SYSWELD and the experimental measurements carried out on 16MnNiMo5 steel in the case of a partial penetration is achieved. This comparison is based on thermal cycles and also on microstructural evolutions, shapes of fusion zone (FZ) and heat affected zone (HAZ).

© EDP Sciences 2004