-
2
-
-
84971848073
-
-
The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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J. Fluid Mech.
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Proctor, M.R.E.1
Jones, C.A.2
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3
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0001295962
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-
The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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Phys. Rev. Lett.
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, pp. 866
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Coullet, P.1
Iooss, G.2
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4
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4243581993
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The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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, vol.58
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Oswald, P.1
Bechhoefer, J.2
Libchaber, A.3
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5
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0002651539
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The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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(1991)
Adv. Phys.
, vol.40
, pp. 1
-
-
Flesselles, J.-M.1
Simon, A.J.2
Libchaber, A.3
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6
-
-
0000261245
-
-
The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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(1990)
Phys. Rev. Lett.
, vol.64
, pp. 184
-
-
Rabaud, M.1
Michalland, S.2
Couder, Y.3
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7
-
-
0001313004
-
-
The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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(1995)
Phys. Rev. Lett.
, vol.74
, pp. 538
-
-
Giorgiutti, F.1
Bleton, A.2
Limat, L.3
Weisfried, J.E.4
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8
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36849120852
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-
The morphological instabilities of the lamellar eutectic growth fronts present profound similarities with those of other one-dimensional periodically modulated fronts. The general, phenomenological reasons for this fact are now well known [M. R. E. Proctor and C. A. Jones, J. Fluid Mech. 188, 301 (1988); P. Coullet and G. Iooss, Phys. Rev. Lett. 64, 866 (1990)]. The experimental illustrations of it are too numerous to be quoted here. We refer the interested reader to P. Oswald, J. Bechhoefer, and A. Libchaber [ibid. 58, 2318 (1987)] and J.-M. Flesselles, A. J. Simon, and A. Libchaber [Adv. Phys. 40, 1 (1991)] as concerns directionally solidified liquid crystals; to M. Rabaud, S. Michalland, and Y. Couder [Phys. Rev. Lett. 64, 184 (1990)] as concerns directional viscous fingering; and to F. Giorgiutti, A. Bleton. L. Limat, and J. E. Weisfried [ibid. 74, 538 (1995)] as concerns the dynamics of one-dimensional arrays of liquid columns. In all these systems save the last one, the basic state is planar, and the stationary periodic state, i.e., the state having the same symmetries as the basic state of lamellar eutectics, results from a primary bifurcation from the planar state, as shown a long time ago by W. W. Mullins and R. F. Sekerka [J. Appl. Phys. 35, 444 (1964)] in the case of directionally solidified dilute alloys. For this reason, the bifurcations called "primary" in this paper are considered "secondary" by the authors studying the above-mentioned systems.
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Mullins, W.W.1
Sekerka, R.F.2
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1/2 are often large. R. Trivedi, J. T. Mason, J. D. Verhoeven, and W. Kurz [Metall. Trans. A 22, 2523 (1991)] determined the histogram of the local values of λ in a number of lead-based eutectic alloys, and found that the width of this histogram is typically of 20% of the average value, and often more.
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1/2 are often large. R. Trivedi, J. T. Mason, J. D. Verhoeven, and W. Kurz [Metall. Trans. A 22, 2523 (1991)] determined the histogram of the local values of λ in a number of lead-based eutectic alloys, and found that the width of this histogram is typically of 20% of the average value, and often more.
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Metall. Trans. A
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Trivedi, R.1
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B. Caroli, C. Caroli, and B. Roulet, in Solids Far from Equilibrium, edited by C. Godrèche (Cambridge University Press, Cambridge, 1992). In directional solidification, the term (one-sided) minimal model designates a theory in which the hydrodynamics flows in the liquid, the rejection of latent heat by the solid, the mass diffusion in the solid, the attachment kinetics at the interface, and the orientation dependence of the surface tension (capillary anisotropy) are neglected. The equations of the model are the diffusion equation for the solute concentration in the liquid ahead of the front, the mass conservation equation for the solute, and the Gibbs-Thomson equation at the solid-liquid interfaces. In the case of eutectics. one adds the Young equation at the α-β-liquid junction lines (or points, in 2D systems).
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6 by K. A. Jackson in 1967 [quoted by J. S. Kirkaldy, Rep. Prog. Phys. 55, 723 (1992), Fig. 46].
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Van Suchtelen, J.1
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K. Kassner and C. Misbah, Phys. Rev. A 44, 6533 (1991); A. Valance, C. Misbah, D. Temkin, and K. Kassner, Phys. Rev. E 48, 1924 (1993).
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W. Kurz and D. J. Fischer, in Fundamentals of Solidification (Trans Tech Aedermannsdorf, 1984), p. 109. The transition from the "planar" regimes to the regimes of dendrites and "colonies" takes place above a critical value of the ratio VIG, which is a function of C and the residual-impurity content [F. R. Mollard and M. C. Flemings, Trans. AIME 239, 1534 (1967)]. The planar coupled zone is the zone of the parameter space situated below this critical value of V/G.
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Kurz, W.1
Fischer, D.J.2
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W. Kurz and D. J. Fischer, in Fundamentals of Solidification (Trans Tech Aedermannsdorf, 1984), p. 109. The transition from the "planar" regimes to the regimes of dendrites and "colonies" takes place above a critical value of the ratio VIG, which is a function of C and the residual-impurity content [F. R. Mollard and M. C. Flemings, Trans. AIME 239, 1534 (1967)]. The planar coupled zone is the zone of the parameter space situated below this critical value of V/G.
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Trans. AIME
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5544269676
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note
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By orientation of a eutectic grain, we mean the set of six angular variables, three of which specify the orientation of the crystal lattice of, say, the a phase with respect to the laboratory reference frame, the three others specifying the orientation of β with respect to α. Similarly, the capillary anisotropy within a given eutectic grain is described by the three functions (Wulff plots) giving the dependence of the α-liquid, β-liquid, and α-β interfaces on the orientation of their normal with respect to, say, the laboratory reference frame. The α-liquid and β-liquid Wulff plots of two different grains are simply rotated with respect to each other, but. in general, the α-β Wulff plots are entirely different. The (rare) grains, the α-β Wulff plot of which have cusps are called locked grains because, in such grains, the eutectic lamellae are generally locked onto the orientation(s) corresponding to the cusp(s) of the α-β Wulff plot [15]. The grains, the α-β Wulff plot of which presents no singularity are called "floating grains."
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49
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There exists a profusion of denominations for the various modes of instability of 1D modulated fronts. The tilt mode is also called the symmetry-breaking, parity-breaking, propagating, or traveling mode. The 2λO mode is called vacillation breathing by K. Kassner, C. Misbah, and H. Müller-Krumbhaar [Phys. Rev. Lett. 67, 1551 (1991)]. The 1λO mode is sometimes called optical mode, and the xλO modes of arbitrary x, irrational modes.
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Kassner, K.1
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edited by L. Kubin and G. Martin Trans Tech, Aedermannsdorff
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G. Faivre, C. Guthmann, and J. Mergy, in Nonlinear Phenomena in Materials Science, edited by L. Kubin and G. Martin (Trans Tech, Aedermannsdorff, 1992), Vol. 2, p. 1.
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M. Ginibre (unpublished).
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