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Shuffling in displacive phase transformations
Materials Science and Engineering: A, 2008With the aim to elucidate the transformation paths producing complex martensitic structures, the elementary mechanisms of collective atomic motion in diffusionless phase transformations are investigated using simple geometrical models. Relationships of the structures created by different mechanisms are summarized and the role of various planar crystal ...
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Statistical and phase properties of displaced Kerr states
Physical Review A, 1991We study the statistical and phase properties of the output states of a Mach-Zehnder interferometer with a nonlinear Kerr medium in one of its arms. The combination of nonlinearity and displacement produced by the interferometer generates output states (displaced Kerr states) that, unlike those derived from a Kerr medium alone (Kerr states), do not ...
, Wilson-Gordon, , Buek, , Knight
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Displacive processes and phase transformations
Bulletin of the Russian Academy of Sciences: Physics, 2009Two basic displacive processes can be considered, namely displacements of crystal parts as rigid blocks and shuffling of atomic planes. The many-body potentials are used for the interatomic forces. General displacements of atomic planes are examined, i.e. γ-surface type calculations are applied to single plane shuffling and alternate shuffling of every
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Displacive Phase Transitions at Large Strains: Phase-Field Theory and Simulations
Physical Review Letters, 2009The Landau potential for multivariant displacive phase transformations (PTs) is derived for the most general case of large rotations, elastic and transformational strains, as well as nonlinear and different elastic properties of phases. The method of repetitive superposition of large strains is extended for PTs and is utilized in the finite-element ...
Levitas, Valery +3 more
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2003
Abstract Many applications of the solid state sciences exploit the electronic or mechanical properties of solids. The important materials are metals or semiconducting materials. These materials tend to have relatively simple crystal structures, such as the cubic and hexagonal structures we met in Chapter 2 (fcc, hcp, diamond, NaCl, and ...
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Abstract Many applications of the solid state sciences exploit the electronic or mechanical properties of solids. The important materials are metals or semiconducting materials. These materials tend to have relatively simple crystal structures, such as the cubic and hexagonal structures we met in Chapter 2 (fcc, hcp, diamond, NaCl, and ...
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Multidimensional Displacement of a Viscous Phase by a Non-Viscous Phase
Society of Petroleum Engineers Journal, 1968Abstract A mathematical model has been formulated for simulating three-dimensional displacement of a viscous fluid by a displacing fluid of zero viscosity. The model has been incorporated into a FORTRAN IV computer program for application in low-rate, high-permeability systems.
Alan D. Modine, Keith H. Coats
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Compatibility and accommodation in displacive phase transformations
Progress in Materials Science, 2011The role of disconnections and lattice-invariant deformation in displacive phase transformations is reviewed, particularly the defect structure of equilibrium habit planes, the mechanism of transformation, and the deformation accompanying growth. This is extended to the 3-D topological modeling of a product embedded in its parent phase.
J.P. Hirth, R.C. Pond
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Displacive Phase Transformations and Phonons
1994The use of first principles calculations to help understand materials properties has gone from wishful thinking, to feasible, to invaluable, largely because of the doubling of computing power every 18 months for the last 30 years,. We are still, however, just beginning the era when such calculations will become a factor in the synthesis, processing ...
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Design of Two-Phase Displacement Experiments
Inverse Problems in Engineering, 2002This paper presents and demonstrates a systematic approach to the selection of experimental designs leading to accurate estimates of relative permeability and capillary pressure functions for two-phase flow in porous media. The objective is to select the most appropriate experimental designs for determining the flow functions accurately within the ...
André Sylte +5 more
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Displacement and strain calculations by the phase shift method
Applied Optics, 1987The phase shift method, well known in holographic interferometry, is applied to the deformation of line gratings. The method uses the moire effect but it determines local displacement or strain from the grey values of three shifted images instead of the coordinates of the fringes. The basic equations are derived from the transmittance function.
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