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Type Clouet, Emmanuel; Barbu, Alain; La, Ludovic; Martin, Georges
  Publication Precipitation kinetics of Al3Zr and Al3Sc in aluminum alloys modeled with cluster dynamics Volume (down) Journal Article
Pages 2005
  Abstract Acta Materialia  
  Corporate Author Acta Mater.  
Publisher 53  
Editor 8
  Summary Language 2313-2325 Series Editor Precipitation; Kinetics; Aluminum alloys; Cluster dynamics  
Abbreviated Series Title Precipitation kinetics of Al3Zr and Al3Sc in aluminum supersaturated solid solutions is studied using cluster dynamics, a mesoscopic modeling technique which describes the various stages of homogeneous precipitation by a single set of rate equations. The only parameters needed are the interface free energy and the diffusion coefficient which are deduced from an atomic model previously developed to study the same alloys. A comparison with kinetic Monte-Carlo simulations based on the vacancy diffusion mechanism shows that cluster dynamics correctly predicts the precipitation kinetics provided a size dependent interface free energy is used. It also manages to reproduce reasonably well existing experimental data.
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no NU @ karnesky @ 211
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Martin, G. A diffuse interface model for the interfacial transfer coefficient Journal Article 2005 Acta Materialia 53 9 2629-2632 Diffusion; Interfaces; Alloys; Kinetics; Phase field models; Theory Based on an extension to non-equilibrium problems, of Cahn's interface layer thermodynamics, we demonstrate that the matrix of transfer coefficients across a coherent interface between two phases, [alpha] and [beta], can be viewed as a correction to the Onsager's matrix of mobility coefficients along the continuous concentration profile. The latter coefficients are defined along the equilibrium concentration profile in the interfacial layer and in the [alpha]- and [beta]-phases. Combining the above definition with that of solute interfacial excess, we can define transfer coefficients relative to two components chosen arbitrarily, the values of which are intrinsic properties of the interfacial layer, independent of its precise location and thickness. no NU @ p-kolli @ 9702
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Walls, J. M.; Martin, A. D.; Southworth, H. N. Combined FIM AES and LEED study of the structure and composition of ion- bombarded W surfaces Journal Article 1975 Surface Science Surf. Sci. 50 low energy ion bombardment; Field Ion Microscopy no 6984
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Hadjadj, L.; Menand, A.; Martin, C. Atom probe study of a Ti-10V-2Fe-3Al alloy: preliminary results Journal Article 1987 Journal de Physique J. de Phys. 48-C6 atom probe field ion microscopy no 3825
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Menand, A.; Chambreland, S.; Martin, C. Atom probe study of titanium base alloys: preliminary results Journal Article 1986 Journal de Physique J. de Phys. 47-C2 atom probe field ion microscopy no 3651
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Pareige, C.; Soisson, F.; Martin, G.; Blavette, D. Ordering and phase separation in Ni-Cr-Al: Monte Carlo simulations vs three-dimensional atom probe Journal Article 1999 Acta Materialia Acta Mater. 47 1889-1899 3D Atom Probe, Phase transformation no 2401
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Menand, A.; Martin, C.; Sarrau, J. M. Field evaporation charge state of boron ions: a temperature effect study Journal Article 1984 Journal de Physique J. de Phys. 45-C9 no 8612
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Cetronio, A.; Jones, J. P.; Martin, A. D. Computer simulation of ion images as an aid to indexing small crystallites Journal Article 1974 Surface Science Surf. Sci. 44 computer simulation; Field Ion Microscopy no 6715
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Soisson, F.; Barbu, A.; Martin, G. Monte Carlo simulations of copper precipitation in dilute iron-copper alloys during thermal ageing and under electron irradiation Journal Article 1996 Acta Materialia Acta Mater. 44 9 3789-3800 We propose a Monte Carlo simulation of the coherent precipitation of copper in [alpha]-iron using a vacancy diffusion mechanism. The only adjustable parameters are the vacancy concentration and the local vacancy jump frequencies. The latter are deduced from pair interactions restricted to nearest neighbour atoms. Precipitation kinetics are compared to recent experimental studies of precipitation in dilute Fe---Cu solid solutions during thermal ageing or electron irradiation (electrical resistivity measurements). The degree of advancement of the unmixing process as a function of time has the form of a stretched exponential, in good agreement with experiment. The simulation also provides interesting information on precipitate morphology and growth mechanisms which are useful for experimental data analysis. no NU @ karnesky @ 1917
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Jones, J. P.; Martin, A. D. High field microscopy of nickel on tungsten Journal Article 1974 Surface Science Surf. Sci. 41 thin film nucleation; Field Ion Microscopy no 6758
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