Heat Transfer, Fluid Flow, and Metallurgical Transformations in Arc Welding: Application to 16MND5 Steel
Arc welding creates a weld pool to realize continuity between pieces of assembly. The thermal history of the weld is dependent on heat transfer and fluid flow in the weld pool. The metallurgical transformation during welding and cooling are modeled in the literature only at solid state neglecting the fluid flow. In the present paper we associate a heat transfer – fluid flow and metallurgical model for the 16MnD5 steel. The metallurgical transformation model is based on Leblond model for the diffusion kinetics and on the Koistinen-Marburger equation for Marteniste transformation. The predicted thermal history and metallurgical transformations are compared to a simulation without fluid phase. This comparison shows the great importance of the fluid flow modeling.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328322Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1264
 Martinez, "Jonction 16MnD5-Inconel 690-316LN par soudage diffusion. Elaoration et calculs des contraintes residuelles de procede>>, PhD, Ecole Nationale Superieure des Mines de Paris, 1999.
 J.B. Leblond, j. c. dEVAUX, "A new kinetic model for anisothermal metallurgical transformations in steels including effect of austenite grain size", Acta Mater, vol 32, p 137-146, 1984.
 T. Inoue, Z. G Wang, "Coupling between stress, temperature and metallic structures during processes involving phase transformations", Mat. Sci. Technol., vol 19, p845-850, 1985.
 Z.G. Wang, T. Inoue, "Viscoplastic constitutive relation incorporating phase transformation - application to welding", Mat. Sci. Technol, vol 19, p899-903, 1985.
 F. Waeckel "Une loi de comportement thermometallurgique des aciers pour le calcul mecanique des structures >> PhD, ENSAM, 1984.
 D.P Koistien, R.E. Marburger, A general equation prescribing extend of austenite-martensite transformation in pure Fe- C alloys and plain carbon steels", Acta Metall, vol 7, p 59-60, 1959.
 A. Traidia, F. Roger, E. Guyot, "Optimal parameters for pulsed gas tungsten are welding in partially and fully penetrated wel pools", Int. J. Therm. Sci. , 49, p1197-1208, 2010.
 Z. Moumni, F. Roger, N. T. Trinh, " Theoretical and numerical modeling of the thermomechanical and metallurgical behaviour of steel", Int. J. Plasticity, 2010.