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ensure accuracy. Advancing Materials Research the acting stress
will favor the formation of those martensitic crystallographic
orientations that have optimal displacive components for
“yielding” to the stress. The resulting transformation-induced
plasticity (TRIP) reflects a novel interplay between the
kinetics of a structural change and macroscopic stress-strain
behavior. Indeed, there are now cases in which constitutive
relations involving transformation plasticity have been derived
to predict flow stress as a function of strain, strain rate,
temperature, and stress state.95 In austenitic steels having
appropriate deformation-induced transformation characteristics,
the uniform ductility in a tensile test has been increased about
fivefold beyond that of the untransformed parent phase.96
Transformation plasticity offers an attrac