Constitutive models & testing

A multi-phase constitutive model has been established that accounts for phase dependent thermomechanical properties related to elasticity, thermal expansion, and metallurgical strains. Also transformation plasticity and phase dependent flow stresses during viscoplastic deformation, including strain hardening and strain rate sensitivity, are taken into account.


Modelled final microstructure distribution in
the weld, assuming a martensitic weld metal.


Typical multi-cycle Satoh test result.

Modelled final austenite distribution and grain size in a cross section of a 3 pass welding of two duplex stainless steel plates using a physical model for phase transformations.


Published January 5, 2007