Abstract
An experimental characterisation of transformation induced plasticity (TRIP) and related phenomena is presented for the martensitic transformation in a 16MND5 steel. Two problems are considered ■ Assessment of the primacy of Magee or Greenwood-Johnson mechanisms: this is achieved through the evolution of TRIP in a repeated cyclic TRIP test which should be reversible for Magee mechanism and cumulative for Greenwood-Johnson mechanism. The second case is observed showing thus that Greenwood-Johnson mechanism is dominant. Coupling of an austenitic prehardening with the TRIP behavior: it is shown that this behavior is strongly influenced by a tensile or compressive prehardening and that this influence cannot be described, as sometimes mentioned, through some kind of kinematic hardening.
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