|Title||High pressure phase transformations revisited|
|Publication Type||Journal Article|
|Year of Publication||2018|
|Journal||Journal of Physics-Condensed Matter|
|Type of Article||Review|
|Keywords||characterization, continuum, continuum modeling, diamond-anvil cell, experimental, finite-element simulations, high pressure, in-situ, lattice strains, martensitic nucleation, microstructure evolution, numerical-simulation, phase transformations, physics, Plastic deformation, shape-memory alloys, stable intermediate, state, thermomechanical theory, x-ray-diffraction|
re is not included in characterization of transformations; (b) continuum theory is poorly developed; (c) heterogeneous stress and strain fields in experiments are not determined, which leads to confusing material transformational properties with a system behavior. Some ways to advance the field of high pressure phase transformations are suggested. The key points are: (a) to take into account plastic deformations and microstructure evolution during transformations; (b) to formulate phase transformation criteria and kinetic equations in terms of stress and plastic strain tensors (instead of pressure alone); (c) to develop multiscale continuum theories, and (d) to couple experimental, theoretical, and computational studies of the behavior of a tested sample to extract information about fields of stress and strain tensors and concentration of high pressure phase, transformation criteria and kinetics. The ideal characterization should contain complete information which is required for simulation of the same experiments.
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