Consistent thermo-mechano-metallurgical model of welded steel with unifiedapproach to derivation of phase evolution laws and transformation-induced plasticity

Coupled electromagnetic, thermal, mechanical, and metallurgical processes o ccur in the heat affected zone (HAZ) during welding. Metallurgical processe s: melting, solidification and solid phase transformations are at the heart of this manufacturing technique. The modern approach to modelling of weldi ng leads to phenomenological description of the complex thermo-mechano-meta llurgical (TMM) process and finite element (FE) solution of this problem. S uch a model requires the new and unified approach to derivation of evolutio n equations for solid phase transformations and the formulation of mathemat ically consistent and coupled TMM problem. Results of this numerical simula tion are shown for two simple welding benchmark problems formulated for two thick plates. (C) 2000 Elsevier Science S.A. All rights reserved.