Results 201 to 210 of about 6,436 (249)

Solute segregation in a lid driven cavity: Effect of the flow on the boundary layer thickness and solute segregation

Journal of Crystal Growth, 2012
Abstract Our objective in the present work is to study the effect of convective flows, ranging from laminar to fully turbulent, on solute segregation in directional solidification configurations. To do so, numerical simulations performed in a model 2D lid driven cavity; the problem parameters, apart from the species molecular diffusion coefficient ...
P. Garandet, J., Kaupp, N., Pelletier, Dominique, Delannoy, Y.   +3 more
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Solute segregation under irradiation

Journal of Nuclear Materials, 1978
Abstract Recent calculations of substitutional solute segregation to planar surfaces, voids, and dislocations in fcc metals during irradiation are reviewed. The calculations were based on a kinetic model that included the effects of vacancy and dumbellinterstitial diffusional encounters with solute atoms, diffusion of point defects and bound ...
Robert A. Johnson, Nghi Q. Lam
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Segregation in fluorocarbon-hydrocarbon solutions

Journal of Solution Chemistry, 1982
The acceleration of13C nmr relaxation rates by oxygen or by nitroxide radical was determined for representative perfluorohexane-heptane mixtures. In the 90:10 (v/v) solution, oxygen is found to affect perfluorohexane, but on the other hand, nitroxide affects the alkane the more strongly.
D. G. Kruger, S. Rajan, C. A. Kingsbury
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Solute segregation at grain boundaries

Interface Science, 1996
This feature article summarizes the present art and science of grain boundary segregation from the viewpoint of the authors activities in this field. In the part on equilibrium segregation, fundamental effects on grain boundary segregation are discussed such as the nature of the solute/matrix binary system, presence of additional elements, temperature,
Siegfried Hofmann, Pavel Leiĉek
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Embrittlement of interfaces by solute segregation

Materials Science and Engineering: A, 1989
Abstract We discuss theoretical models of interfacial embrittlement by solute segregation. Of properties susceptible to alteration by segregation, the ideal work of interfacial separation, 2 γ int , is predicted to have an important but probably not exclusive role in controlling embrittlement.
James R. Rice, Jian-Sheng Wang
openaire   +1 more source

Solute segregation and thermal stability of nanocrystalline solid solution systems

Nanoscale, 2019
Thermal stability of nanograin structures in solid solution systems was modeled and verified quantitatively by experimental results.
Fawei Tang, Xuemei Liu, Haibin Wang, Chao Hou, Hao Lu, Zuoren Nie, Xiaoyan Song   +6 more
openaire   +2 more sources

Segregation in DNA Solutions Induced by Electric Fields

Science, 1995
DNA solutions subjected to an electric field exhibit an instability that leads to DNA segregation in aggregates tilted with regard to the field. With the use of epifluorescence videomicroscopy, the evolution of DNA patterns in capillaries as a function of DNA concentration, DNA size, field strength, and field frequency was studied.
L, Mitnik, C, Heller, J, Prost, J L, Viovy   +3 more
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Solution for underflow problem in linkage and segregation analysis

Computational Biology and Chemistry, 2006
Finding genes for complex traits is one of the major challenges of modern human genetics. Current developments of molecular techniques facilitated use of large pedigrees and marker sets of thousands of single-nucleotide polymorphisms (SNPs). However, one of the problems occurring in statistical analysis of such large data sets is that the likelihood is
Tatiana I. Axenovich, Yurii S. Aulchenko
openaire   +3 more sources

Solute-Atom Segregation at Internal Interfaces

MRS Bulletin, 1990
In an alloy, the equilibrium composition in the vicinity of an inhomogeneity, such as a surface or a grain boundary, will generally differ from the composition in the bulk. This was first recognized by Gibbs. This change in local composition can potentially affect the structure and mechanical properties of the boundary.
S.M. Foiles, D.N. Seidman
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Solute segregation in iron-based alloys

Journal of Vacuum Science and Technology, 1978
Segregation of metalloid impurities to grain boundaries of iron and its alloys can produce brittle intergranular cracking under a variety of external conditions. This set of phenomena is reviewed in terms of: segregation in dilute iron–metalloid binary alloys, interactions of metalloid elements with other solutes to enhance or retard segregation, the ...
C. J. McMahon, L. Marchut
openaire   +1 more source