Formation of nanostructured steels by phase transformation
作者： T. Yokota , C. Garcı́a Mateo , H.K.D.H. Bhadeshia
DOI: 10.1016/J.SCRIPTAMAT.2004.06.006
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摘要: Abstract A thermodynamic criterion is developed to define the finest grain size that can be achieved during phase transformation, as a function of driving force, interfacial energies and parent size. It found at large undercoolings below equilibrium temperature, in practice far greater than predicted theoretically. This because heat which causes recalescence reduces effective undercooling. Whereas these conclusions apply generally, there special effect associated with displacive transformations, i.e. plastic accommodation shape deformation, limits growth grains but has yet modelled quantitatively.
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